3.5 Selden's Catalogs of Objects for Celestia

Contents

• 3.5.1: Open Clusters.
  
• 3.5.2: Globular Clusters
• 3.5.3: Planetary Nebulæ.
  
• 3.5.4: ExtraSolar Planets.
  
• 3.5.5: Messier Catalogs.
  
• 3.5.6: Sloan DR1 Quasars.
  
• 3.5.7: 2dF Galaxy Redshift Survey.
  
  • 3.5.7.1: 100K preliminary data release.
    
  • 3.5.7.2: Final data release.
    
• 3.5.8: Hipparcos Errors.
  
• 3.5.9: WMAP Microwave Maps.
  
• 3.5.10: Quasars and Active Galactic Nuclei.
  
• 3.5.11: Spatial Distribution of Bright Stars.
  
• 3.5.12: Sloan DR2 and DR13 Galaxies.
  
• 3.5.13: IRAS PSCz Galaxies.
  
• 3.5.14: ATNF Pulsars.
  
• 3.5.15: Milky Way Objects.
  
• 3.5.16: Hipparcos Star Catalog.
  

A.1: Signature.
A.2: Admonishment.
A.3: Disclaimer.
A.4: Acknowledgements.

• Selden's List of Resources for Celestia

3.5.1: Open Clusters.

• gaia_clusters_v2.zip
  (7.9 MB, expands to 10.3 MB, 14Jun17)

  This Addon for Celestia v1.6.1 displays the positions of stars which are likely to be members of various open clusters. It includes a star database derived from Gaia DR1, defining the locations of 416,945 stars with parallax errors less than 10% of their parallax values. It also includes all-sky plots showing the relative coverage of Tycho-2, TGAS and this Addon's star databases.

• Gaia DR2: A93_open_clusters.zip
  (20 MB, expands to 25 MB, 24Nov18)

This Addon for Celestia v1.6.1 or later includes catalogs of 1,229 Open Clusters and 397,897 of their member stars, derived from Gaia DR2 and provided by

J/A+A/618/A93     Gaia DR2 open clusters in the Milky Way (Cantat-Gaudin+, 2018)
================================================================================
A Gaia DR2 view of the open cluster population in the Milky Way.
    Cantat-Gaudin T., Jordi C., Vallenari A., Bragaglia A., Balaguer-Nunez L.,
    Soubiran C., Bossini D., Moitinho A., Castro-Ginard A., Krone-Martins A.,
    Casamiquela L., Sordo R., Carrera R.
    
    =2018A&A...618A..93C        (SIMBAD/NED BibCode)
================================================================================

---

Starting with Celestia v1.3, OpenClusters can be listed in .DSC files. Copy these files to the directory Celestia/extras or to your personal addons folder.

When "galaxy label rendering" is turned on, the clusters' names will appear at the appropriate places in space. You can visit those locations to see what stars are nearby. Also, you can "Mark" them so the locations will be visible when labelling is turned off. Some may have InfoURLs associated with them to provide more information.

The selection criteria for the lists of open clusters below were

• the clusters had catalog names (some clusters are identified only by their 1950 coordinates)
• their distances were listed.
As a result, these lists of open clusters only include about 1/3 of each of the original catalogs.

The lists were obtained using the HEASARC Browser at http://heasarc.gsfc.nasa.gov/W3Browse/ and reformatted for Celestia.

Deep Space Catalog file	Description
lynga.dsc (40KB, 18Feb03)	332 Named Open Clusters (obsolete) Extracted from the HEASARC copy of the 1987 Lynga Catalog. For a description of the catalog, see "LYNGACLUST - Lynga Open Clusters Catalog," at http://heasarc.gsfc.nasa.gov/W3Browse/star-catalog/lyngaclust.html
openclusters.dsc (80KB, 18Feb03)	610 Named Open Clusters (for Celestia v1.3.0-v1.3.2) This list of clusters was extracted from the HEASARC copy of "New Optically Visible Open Clusters & Candidates Catalog" by Dias,W.S. et.al.,Astronomy & Astrophysics 389, 871 (2002). For a description of the catalog, see http://heasarc.gsfc.nasa.gov/W3Browse/star-catalog/openclust.html
openclusters.dsc (80KB, 22Dec05)	610 Named Open Clusters (for Celestia v1.4.0) The v1.4.0 version was updated to include popular names (like Hyades) as well as catalog names.
Marked Open Clusters opencl_marked.dsc (80KB, 22Feb03) opencl_dots.dsc (80KB, 22Feb03)	The "marked" catalog substitutes an "x" for the cluster names. It does not use the new "Mark" function. However, this does make it easy to get an overview of the clusters' distribution. The "dots" catalog substitutes a "." for better resolution.
messier_open.dsc (6KB, 19Feb03)	31 Open Clusters. 27 of these are the open clusters originally cataloged by Messier. 4 are not: "Collinder 285", "Hyades", "Chereul 3", and "Coma Berenices" (Melotte 111). These additions are included because they are, in order, the four open clusters nearest to us. Although not well known by its catalog name "Collinder 285", the "Ursa Major Moving Cluster" is very well known by its common name: "The Big Dipper." The entries for Messier's open clusters are cataloged here by the short form of their names, e.g. "M47". 2 of Messier's 27 clusters are listed with their popular names instead of their Messier numbers: "Pleiades" (M45) and "Praesepe" (M44). M44 is also known as "Beehive". These two clusters are involved in what is known as "The Hipparcos Pleiades Distance Problem." The cataloged distances of these two clusters, determined by photometry and spectroscopy, are significantly larger than the distances to their members measured by Hipparcos. The cause of these distance discrepancies is not understood and is a topic of current astrophysical research. Some think that there may be problems with the Hipparcos values. See "Astronomers Measure Distance to Well-Known Star", Clavin, Savage & Tindol, Nature, Jan 22, 2004, available at . http://www.jpl.nasa.gov/releases/2004/26.cfm. However, the response by Michael Perryman, Hipparcos Project Scientist, at http://www.rssd.esa.int/hipparcos/Pleiades_distance.html points out that the newly measured position of Atlas is consistant with the standard errors of its position as measured by Hipparcos. These entries were extracted from openclusters.dsc above and "InfoURL" entries were added, mostly to http://obswww.unige.ch/webda/

3.5.2: Globular Clusters

Note: Celestia v1.6.1 includes its own catalog of 150 Globular Clusters. The Addoon below is obsolete.

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Starting with Celestia v1.3, Galaxies are listed in .DSC files, and starting with Celestia v1.4.0, Celestia includes its own catalog of galaxies. The catalogs previously provided here are obsolete.

Copy the file below to the directory Celestia/extras or to your personal addons folder.

When "galaxy rendering" is turned on, the globular clusters will be visible. When "galaxy label rendering" is turned on, their names will appear at the appropriate places in space. You can visit those locations to see what other objects are nearby. Also, you can "Mark" them so the locations will be visible when labelling is turned off. Some may have InfoURLs associated with them to provide more information.

The original version of this catalog was developed by Paul Baulch for Celestia v1.2. Paul gave permission for Selden to make the minor modifications needed to make it usable with Celestia v1.3.

Deep Space Catalog file

Description

globular_clusters.zip (6KB, expands to 30KB, 24Feb03; updated 19apr08)

150 globular clusters These are designated "Galaxies" for rendering by Celestia. This information was extracted from Globular Clusters in the Milky Way (Harris, 1996), and, in 2008, from the CATALOG OF PARAMETERS FOR MILKY WAY GLOBULAR CLUSTERS: THE DATABASE, Compiled by William E. Harris, McMaster University, February 2003. See http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=VII/202 or http://cdsweb.u-strasbg.fr/cgi-bin/Cat?VII/202. and http://physwww.physics.mcmaster.ca/~harris/mwgc.dat See below for the formal VizieR acknowledgment. Updated 9-Mar-2003 to include InfoURLs linking to the Simbad database. Updated 19-Apr-2008 by Guillermo Abramson: added AbsMag for correct brightness when rendered as galaxies added alternate names added a few clusters

• Galaxy afficianados might find these sites interesting:
  • http://www.astro.princeton.edu/~frei/catalog.htm
    • http://www.astro.princeton.edu/~frei/Gcat_htm/cat_ims.htm
    • http://www.astro.princeton.edu/~frei/Gcat_htm/AJpaper/table1.txt
  • Rob Gendler's astrophotographs (copyrighted)
    http://www.robgendlerastropics.com/galaxies.html
  • Axel Mellinger's All-Sky Milky Way Panorama (copyrighted)
    http://home.arcor-online.de/axel.mellinger/

3.5.3: Planetary Nebulæ.

Starting with Celestia v1.3, Nebulæ can be listed in .DSC files. Copy one of these files to the directory Celestia/extras or to your personal addons folder in order to see the locations of some Planetary Nebulæ.

When "galaxy label rendering" is turned on, their names will appear at the appropriate places in space. You can visit those locations to see what other objects are nearby. Also, you can "Mark" them so the locations will be visible when labelling is turned off. Some may have InfoURLs associated with them to provide more information.

Deep Space Catalog file	Description
planetary_nebulae.zip (72KB, 25Feb03, updated 8Nov03) When this zip archive is extracted to your "Extras" directory and "galaxy rendering" is turned on, each of these Planetary Nebulæ will be visible as a sphere of blue lines enclosing a sphere made of red lines. The size of the blue sphere corresponds to the cataloged size of the nebula.	73 Planetary Nebulæ Of the over 1,000 Planetary Nebulæ which have been cataloged, fewer than 10% of them have had their distances estimated, and many of those distances are highly suspect. Catalog sources: "The distance scale of planetary nebulæ" by T. Bensby and I. Lundstrom, Lund Observatory. Astronomy & Astrophysics 357, 499-714 (2001) CDS (France) -- Centre de Donnies astronomiques de Starasbourg http://cdsweb.u-strasbg.fr/CDS.html V/84 Strasbourg-ESO Catalogue of Galactic Planetary Nebulæ (Acker+, 1992) Strasbourg-ESO Catalogue of Galactic Planetary Nebulæ Acker A., Ochsenbein F., Stenholm B., Tylenda R., Marcout J., Schohn C. =1992ESOPN...1....1A (SIMBAD/NED Reference) See below for the formal VizieR acknowledgment. The distances in the Strasbourg-ESO Catalog seem to have some serious accuracy problems: it contains large distances (>2Kpc) for nebulæ that are listed in other catalogs as being nearby (<1Kpc). Also, the fields allocated for indicating the accuracy of the distances are blank. As a result, I was pleased to find the article by Bensby et al. Its authors list the distances of 73 planetary nebulæ for which relatively accurate values have been determined. They don't specify the equatorial coordinates (RA and Dec) of the nebulæ, however. The ESO catalog's coordinates were precessed from B1950.0 to J2000.0 using the algorithm described at http://www.xylem.f2s.com/kepler/b1950.html
pn.zip (300KB, 25Apr03)	This Zip archive includes the following billboards: pn/pn-readme.txt pn/pn.dsc pn/models/ngc2346.3ds pn/models/ngc2392.3ds pn/models/ngc2440.3ds pn/models/ngc6369.3ds pn/textures/medres/ngc2346.jpg pn/textures/medres/ngc2392.jpg pn/textures/medres/ngc2440.jpg pn/textures/medres/ngc6369.jpg See http://www.lepp.cornell.edu/~seb/celestia/billboard.html for more information.
Four Planetary Nebulae	NGC 2346 http://hubblesite.org/newscenter/archive/1999/35/image/d http://heritage.stsci.edu/1999/37/table.html NGC 2392 http://hubblesite.org/newscenter/archive/2002/28/image/o NGC 2440 http://hubblesite.org/newscenter/archive/1999/35/image/e http://heritage.stsci.edu/1999/38/table.html NGC 6369 http://hubblesite.org/newscenter/archive/2002/25/image/a http://heritage.stsci.edu/2002/25/table.html

Alternate Deep Space Catalog file	Description
planetary_nebulæ_dots.dsc (25KB, 25Feb03)	This "dots" catalog substitutes a "o" for the nebulæ names in order to make it easy to get an overview of their distribution.

3.5.4: ExtraSolar Planets.

3.5.5: Messier Catalogs.

3.5.5.1: Messier Catalogs for Celestia v1.6.1.

• messier_all_gdr2.zip (2MB, expands to 7 MB, 26Nov18)

  This Addon for Celestia superceeds all of the Messier Addons below. It provides those Messier objects which are not in Celestia v1.6.1, including Nebulae, Stars and Open Clusters. Its positions have been updated to use values provided by Gaia DR2. (Celestia v1.6.1 already includes all of Messier's Galaxies and Globular Clusters.)

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3.5.5.2: Obsolete Messier Catalogs.

• messier_all.zip (6KB, 14Aug03; updated 16Aug03)
  This zip archive contains the following files:
  • mark_messier.cel
    marks all 110(?) of the Messier objects with blue-green squares. Type Ctrl-K to turn the marks on and off.
  • messier_galaxies.dsc
    lists 33 of the galaxies cataloged by Messier, excluding M102. They were extracted from galaxies_extended.dsc in section 3.5.2 above. The following galaxies are not listed here because they are included with Celestia: M31, M32, M33, M81 and M110.
  • messier_globulars.dsc
    lists the 29 globular clusters cataloged by Messier. They were extracted from globular_clusters.dsc in section 3.5.2 above.
  • messier_open.dsc
    lists the 27 open (galactic) clusters cataloged by Messier. This is the same messier_open.dsc as is in section 3.5.1 above. (M44 and M45 are listed with their popular names, Praesepe and Pleiades, respectively, instead of their Messier numbers. Their indicated distances correspond to their spectrographic distances instead of the Hipparcos measurements.)
  • messier_other.dsc
    lists the 17 other objects cataloged by Messier, including M102, which may have been misidentified, but here is listed as the galaxy NGC 5866.

    Specifically, it includes these objects:

    1. M1 (Crab Nebula)
    2. M8 (Lagoon Nebula)
    3. M17 (Swan Nebula)
    4. M20 (Triffid Nebula)
    5. M24 (Sagittarius Star Cloud)
    6. M27 (Dumbbell Nebula)
    7. M40 (Winnecke 4 Double Star)
    8. M42 (Orion Nebula)
    9. M43 (De Mairan's Nebula)
    10. M44 (Beehive Cluster)
    11. M45 (Pleiades)
    12. M57 (Ring Nebula)
    13. M73 (4 star asterism NGC 6994)
    14. M76 (Little Dumbbell Nebula)
    15. M78 (reflection Nebula in Orion)
    16. M97 (Owl Nebula)
    17. M102 (maybe NGC 5866)

    The locations of these objects were taken from SEDS, so they're only accurate to about the nearest minute of arc. More accurate coordinates may be provided in a future version of this catalog.

    Each of these "other" objects is declared as a Nebula with an associated mesh. No 3DS meshes are actually provided in this add-on, however. As a result, only the locations of these objects will be visible in Celestia, not images of the objects themselves. You may be able to find some appropriate 3DS objects elsewhere which have been created by various artists.

    (M44 and M45 are included in this file with their Messier numbers instead of their popular names, Praesepe and Pleiades, respectively. Their indicated distances correspond to the Hipparcos measurements instead of their spectrographic distances.)

  • messier_stars.stc (added 16Aug03)
    lists the stars comprising M40 and M73. Requires Celestia v1.3.1pre4 or later.
    
    Some of Messier's objects in Sagittarius

  The zip archives below contain all of the files as listed above except for the file "messier_other.dsc". Instead they include "messier_other_v2.dsc" and the accompanying models and images.

  The 16 images in these archives all are 512x512 pixels. They require a total of about 16MB of graphics memory. Your graphics card must have 32MB of memory or more in order to be able to see them all at once.

• messier_all_v2.zip (164KB, 23Aug03) (requires Celestia v1.3.1pre4 or later)
  The 3DS models in the V2 archive use wildcards to specify the surface texture images. Wildcard textures are not available in Celestia v1.3.0.
• messier_all_v2a.zip (164KB, 7Sep03) (for Celestia v1.3.0 or later)
  The V2a archive specifies jpg image files, so its nebulae are visible in Celestia v1.3.0.
• messier_all_v3a.zip (830KB, 26Sep03) (for Celestia v1.3.0 or later) This v3a archive contains jpeg images with improved quality.
  
  

  If you restore one of these zip archives into your Celestia Add-ons directory, it will create a directory named "messier_all" along with appropriate models and textures subdirectories within it.

• messier_other_v2.dsc
  lists the 17 other objects cataloged by Messier, including M102, which may have been misidentified, but here is listed as the galaxy NGC 5866.

  The initial locations of these objects were taken from SEDS, but were modified so that images of these objects would be properly positioned on the sky. Photographs of celestial objects usually are not ceneterd on the accepted coordinates of those objects. The images are positioned to somewhat better than a minute of arc.

  Each of these "other" objects is declared as a Nebula with an associated mesh. Unlike the first version of this file, flat 3DS meshes (billboards) are provided in this add-on. As a result, after installing this, low resolution images of these objects will be visible in Celestia. They'll only look right if you look at them from the solar sysrtem. From other directions, they'll look like what they are: flat pictures posted on bulletin boards.

  These images are very low resolution jpeg images. They are only included to give you some idea of what Messier's objects look like. Low resolutions are used both to minimize the size of the archive file and to encourage you to find some appropriate 3DS models with high resolution surface textures created by various artists.

  (M44 and M45 are included in this file with their Messier numbers instead of their popular names, Praesepe and Pleiades, respectively. Their indicated distances correspond to the Hipparcos measurements instead of their spectrographic distances.)

• A models directory
  This directory contains 16 3DS models as specified in messier_other_v2.dsc (M42 and M43 are shown as parts of the same object)

  In the v2 zip archive, all of the billboard objects included in the archive specify a wildcard texture file type. This means that you can replace, for example, the 512x512 quality=20 m1-5.jpg by a 4Kx4K lossless m1-5.dds with alpha channel. NOAO provides up to 4K TIFF images of most of the Messier objects. Their larger images have the same fields of view as the smaller ones used here. Links to all of them are included in the archive.

  The billboards in the v2a and v3a archives specify .jpg images in order to be compatible with v1.3.0 of Celestia.

• A textures/medres directory
  This directory contains 16 images as specified in the models used by messier_other_v2.dsc

  These images are all "derivative works". In other words, the pictures are modifications of images created by someone else.

  The originals used for this project were all procucts of NOAO. The credit for all of the original pictures goes to "National Optical Astronomy Observatory/ Association of Universities for Research in Astronomy/ National Science Foundation." According to the NOAO copyright page at http://www.noao.edu/image_gallery/copyright.html, their images may be used freely for "educational outreach activities composed by amateur astronomers". That's what this is.

  A complete listing of the original pictures and their credits is included in the v2, v2a and v3a archives.

3.5.6: Sloan DR1 Quasars.

• 3.5.6.1: The Multi-body Quasar Addon.
  
• 3.5.6.2: Viewing the Quasars.
  
• 3.5.6.3: The Single-body Quasar Addon.
  
• 3.5.6.4: Viewing the Single-body Quasars.
  
• 3.5.6.5: Acknowledgements.
  

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  3.5.6.1: The Multi-body Quasar Addon.

  This Addon adapts the "Sloan Digital Sky Survey Data Release 1" catalog of Quasars for use with Celestia v1.3.1. Quasars also are called QSOs or QuasiStellar Objects.

  This Addon causes Celestia to run extremely slowly. If you have a more recent version of Celestia, v1.3.2 prerelease 3 or later, then you should use the CMOD version instead. See below.

  • "a href="files/quasars.zip">quasars.zip
    (430KB, 15 Feb 2004)

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    Archive:  QUASARS.ZIP
      Length     Date   Time    Name
     --------    ----   ----    ----
            0  02-15-04 12:13   Quasars/
            0  02-15-04 12:13   Quasars/models/
          835  02-15-04 12:19   Quasars/models/min-red.3ds
          345  02-15-04 12:09   Quasars/test.dsc
            0  02-15-04 12:19   Quasars/textures/
            0  02-15-04 12:19   Quasars/textures/medres/
          631  02-15-04 12:22   Quasars/textures/medres/min-red.jpg
          210  02-15-04 13:32   Quasars/ViewQuasars.dsc
          969  02-15-04 09:14   Quasars/test.txt
      1487457  02-15-04 13:22   Quasars/sdss-dr1-qso-dots.dsc
          675  02-15-04 14:54   Quasars/ViewQuasars.html
      1337048  02-15-04 14:44   Quasars/MarkQuasars.cel
      1604448  02-15-04 14:57   Quasars/sdss-dr1-qso-named.dscNO
         3141  02-15-04 15:32   Quasars/sdss-dr1-qso-readme.txt
     --------                   -------
      4435759                   14 files

    ---

    Restore this Zip archive into Celestia's extras directory, where it'll create the necessary files and folders.

    This Addon contains two Deep Space Catalogs for Celestia:

    • sdss-dr1-qso-named.dsc
    • sdss-dr1-qso-dots.dsc

    These two catalog files each list the locations of the same 16713 QSOs.

    sdss-dr1-qso-named.dsc includes their formal names and locations.

    sdss-dr1-qso-dots.dsc has replaced all of the quasars' formal names by a single dot (period).

  [back to Contents]

  3.5.6.2: Viewing the Quasars.

  Because of the large number of objects involved, Celestia runs frustratingly slowly.

  • If you load sdss-dr1-qso-dots.dsc and enable "Label Galaxies", you'll see an overview of the distribution. However, the positions aren't exactly right.

  • If you load sdss-dr1-qso-named.dsc, run the script MarkQuasars.cel and enable markers (but not labels), you'll see an overview of the distribution with somewhat more accuracy. However, running the Mark script can take quite a while.

    The included HTML file ViewQuasars.html provides two Cel:// URLs to view the Quasars. They take you to a distant viewpoint and enable either labels or markers.

    Quasars seen from a distance	This thumbnail links to a much larger image, where the dots representing Quasars are visible. This Cel:// URL takes you to this viewpoint: Quasars from a distance

  [back to Contents]

  3.5.6.3: The Single-body Quasar Addon.

  This Addon adapts the "Sloan Digital Sky Survey Data Release 1" catalog of Quasars for use with Celestia v1.3.2pre3 or later. Quasars also are called QSOs or QuasiStellar Objects. Unlike the Multi-body Addon, this version leaves Celestia quite responsive.

  • quasars-cmod.zip
    (325KB, 21 Feb 2004)

    ---

    Archive:  QUASARS-CMOD.ZIP
      Length     Date   Time    Name
     --------    ----   ----    ----
            0  02-21-04 10:06   quasars-cmod/models/
       907870  02-21-04 13:32   quasars-cmod/models/quasars.cmod
          325  02-21-04 13:38   quasars-cmod/quasars-cmod.dsc
         2893  02-21-04 13:50   quasars-cmod/quasars-cmod-readme.txt
          210  02-15-04 13:32   quasars-cmod/ViewQuasars.dsc
          318  02-21-04 13:45   quasars-cmod/ViewQuasars.html
     --------                   -------
       911616                   6 files

    ---

    Restore this Zip archive into Celestia's extras directory, where it'll create the necessary files and folders.

    This Addon contains a single Deep Space Catalog for Celestia:

    • quasars-cmod.dsc

    This catalog file places a single model within Celestia. The model itself consists of 16713 points, representing the QSOs.

  [back to Contents]

  3.5.6.4: Viewing the Single-body Quasars.

  Despite the large number of points involved, you can rotate a single model that has many points within Celesia in realtime. It is not slow at all.

  The included HTML file ViewQuasars.html provides a Cel:// URL to view the Quasars. It takes you to a distant viewpoint looking toward the sun. You can then use your keyboard or mouse to change the viewpoint in realtime.

  Quasars seen from a distance	This thumbnail links to a much larger image, where the dots representing Quasars are more visible. This Cel:// URL takes you to this viewpoint: Quasars from a distance

  3.5.6.5: Acknowledgements.

  These catalog files were generated from the catalog "J/AJ/126/2579 SDSS quasar catalog. II. First data release (Schneider+, 2003)" downloaded from the VizieR catalog server.

  See below for the formal SDSS and VizieR acknowledgments.

  See the included readme file for additional credit information.

3.5.7: 2dF Redshift Survey.

• 3.5.7.1: 100K preliminary data release.
  
• 3.5.7.2: Final data release.
  
• 3.5.7.3: Acknowledgements.
  

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  3.5.7.1: The Single-body 2dF 100K Addon.

  This Addon adapts the "The 2dF Galaxy Redshift Survey 100k Data Release" of 31 January 2001 for use with Celestia v1.3.2pre3 or later. It displays the locations of 93,843 objects. Although this isn't the complete 2dF dataset, the "walls" and "voids" of galaxies are plainly visible. The northern survey is colored blue, the southern survey yellow, and the "random" surveys are red.

  • CML: 2df_100k-cmod.zip (1.8MB, 21Feb04; updated 22Feb04)
    
    Note

    Because of its popularity, this file now is available only from The Celestia MotherLode ( http://www.celestiamotherlode.net/ )

    ---

    Archive:  2DF_100K-CMOD.ZIP
      Length     Date   Time    Name
     --------    ----   ----    ----
          317  02-22-04 11:38   2df_100k-cmod/2df_100k-cmod.dsc
         2859  02-22-04 12:47   2df_100k-cmod/2df_100k-cmod-readme.txt
            0  02-21-04 21:02   2df_100k-cmod/models/
      4557605  02-22-04 12:34   2df_100k-cmod/models/2df_100k.cmod
          210  02-15-04 13:32   2df_100k-cmod/View2df_100k.dsc
          335  02-21-04 22:18   2df_100k-cmod/View2df_100k.html
     --------                   -------
      4561326                   6 files
    

    ---

    The model was updated on 22Feb to correct the sign of the declination which had been dropped in the calculations used to create the original model. It also has been color coded to show which galaxies were observed in the different surveys. This coloring revealed a problem in the original catalog data. Some galaxies seem to have spuriously small redshifts and have been placed in the wrong positions on the sky.

    Despite the almost 100,000 points involved, you can rotate this single CMOD model within Celesia in realtime.

    The included HTML file View2df_100k.html provides a Cel:// URL to view the distant galaxies. It takes you to a distant viewpoint looking toward the sun. You can then use your keyboard or mouse to change the viewpoint in realtime.

    2dF: 100k galaxies seen from a distance	This thumbnail links to a much larger image, where the dots representing the 2dF's 100k galaxies are more visible. This Cel:// URL takes you to this viewpoint: 2df_100k from a distance

  [back to Contents]

  3.5.7.2: The Single-body 2dF Final Release Addon.

  This Addon adapts the "2dF Galactic Redshift Survey" final data release (Colless et al, 2003) for use with Celestia v1.3.2pre3 or later. It displays the locations of 229103 galaxies and QSOs. The appearance of the "walls" and "voids" of galaxies is somewhat improved over the 100K release. The northern survey is colored blue, the southern survey yellow, and the "random" surveys are red.

  CML: 2df_300k.zip (4MB, 5Mar04)
  
  Note

  Because of its popularity, this file now is available only from The Celestia MotherLode ( http://www.celestiamotherlode.net/ )

  ---

  Archive:  2DF_300K.ZIP
    Length     Date   Time    Name
   --------    ----   ----    ----
        317  03-03-04 07:59   2df_300k-cmod/2df_300k-cmod.dsc
       1988  03-06-04 11:36   2df_300k-cmod/2df_300k-cmod-readme.txt
          0  02-22-04 15:45   2df_300k-cmod/models/
   11247955  03-03-04 20:13   2df_300k-cmod/models/2df_300k.cmod
        626  03-05-04 23:35   2df_300k-cmod/View2df_300k.html
   --------                   -------
   11250886                   5 files

  ---

  Despite the more than 200,000 points involved, you can rotate this single CMOD model within Celesia in realtime.

  The included HTML file View2df_300k.html provides a Cel:// URL to view the distant galaxies. It takes you to a distant viewpoint looking toward the sun. You can then use your keyboard or mouse to change the viewpoint in realtime.

  [back to Contents]

  3.5.7.3: Acknowledgements.

  The 100K catalog file was generated from the catalog VII/226 The 2dF Galaxy Redshift Survey 100k Data Release (2dFGRS Team, 2001) downloaded from the VizieR catalog server.

  See below for the formal VizieR acknowledgment.

  The 300K catalog file was generated from the catalog "best_observations.idz" by Matthew Colless, et al. 30 June, 2003. It was downloaded from the 2dFGRS Web site at http://magnum.anu.edu.au/~TDFgg/Public/Release/SpecCat/index.html

  See below for the formal 2dF acknowledgment.

  For details of the 2dF survey of galactic redshifts, visit the Web page http://magnum.anu.edu.au/~TDFgg/

  See the included readme file for additional credit information.

  • Home page of the Two Degree Field system (2dF)
    http://www.aao.gov.au/2df/

3.5.8: Hipparcos Errors.

This Addon displays the errors in the Hipparcos parallax measurements. You must have Celestia v1.3.2pre3 or later to be able to view it.
• hip-errors.zip (5MB, 6Mar04)
  
  

  ---

  Archive:  HIP-ERRORS.ZIP
    Length     Date   Time    Name
   --------    ----   ----    ----
        184  03-04-04 03:09   hip-errors/hip-10-20-errors.dscNO
        184  03-04-04 03:10   hip-errors/hip-20-40-errors.dscNO
        179  03-04-04 03:10   hip-errors/hip-40-errors.dscNO
        191  03-04-04 03:09   hip-errors/hip-5-10-errors.dscNO
        180  03-04-04 03:08   hip-errors/hip-5-errors.dscNO
        192  03-04-04 18:05   hip-errors/hip-60k-errors.dscNO
       1162  03-04-04 19:18   hip-errors/hip-errors.dsc
       3084  03-06-04 09:28   hip-errors/hip-errors-readme.txt
          0  03-04-04 19:33   hip-errors/models/
     634291  03-04-04 18:11   hip-errors/models/hip-05-errors.cmod
    3000793  03-04-04 18:13   hip-errors/models/hip-10-20-errors.cmod
    3439646  03-04-04 00:37   hip-errors/models/hip-20-40-errors.cmod
    3644639  03-04-04 18:11   hip-errors/models/hip-40-errors.cmod
    1544733  03-04-04 18:11   hip-errors/models/hip-5-10-errors.cmod
     104023  03-04-04 18:08   hip-errors/models/hip-60k-errors.cmod
       1837  03-04-04 19:18   hip-errors/ViewErrors.html
   --------                   -------
   12375318                   16 files

  ---

  The Hipparcos satellite measured the distances of over 100,000 stars. Unfortunately, the uncertanty in those measurements varied significantly. This Addon provides a view of those errors, drawing lines (error bars) of different colors though the stars drawn by Celestia. Green lines are used for stars where the standard error was less than 5%. Red lines are used for errors greater than 40%. Since distant stars have tiny parallaxes, those errors are quite large.

  Top: HIP 400's Error: <5% Bottom: Hipparcos Errors >40%	This thumbnail links to a much larger image, where the lines representing the errors in the Hipparcos parallax measurements are more visible. Red error bars indicate the measurements with standard errors greater than 40% of a star's parallax.
  Top: Hipparcos Errors <5% Bottom: Closeup	Green error bars indicate the measurements with standard error less than 5% of a star's parallax.

  Acknowledgements:

  This DSC catalog file was generated from the Vizier catalog " I/239 TheHipparcos and Tycho Catalogues (ESA 1997)"

  See below for the formal VizieR acknowledgment.

  See below for the formal Hipparcos acknowledgment.

  See also http://astro.estec.esa.nl/Hipparcos/site-guide.html and the Proceedings from the Hipparcos Venice '97 symposium at http://astro.estec.esa.nl/Hipparcos/venice.html

3.5.9: WMAP Microwave Maps.

(This Addon isn't really a catalog. I'll move it somewhere more appropriate eventually.)

This Addon displays two of the WMAP microwave maps of the sky. It uses wildcard filetypes, so you must have Celestia v1.3.1 or later to be able fo view it.

• wmap.zip (1.2MB, 9Mar03)
  
  

  ---

  Archive:  WMAP.ZIP
    Length     Date   Time    Name
   --------    ----   ----    ----
          0  12-23-03 07:21   wmap/models/
      52145  03-12-04 21:09   wmap/models/sphere-trans-prot.3ds
      26102  03-09-04 20:19   wmap/models/wmap-bkg.3ds
      26100  03-09-04 21:22   wmap/models/wmap-q.3ds
      52141  03-12-04 21:10   wmap/models/wmap-trans-prot-bkg.3ds
      52139  03-12-04 21:10   wmap/models/wmap-trans-prot-q.3ds
          0  12-23-03 07:21   wmap/textures/
          0  12-23-03 07:21   wmap/textures/medres/
      58368  03-09-04 21:02   wmap/textures/medres/Thumbs.db
     448705  03-09-04 20:36   wmap/textures/medres/wmap-bkg.jpg
     654436  03-09-04 21:02   wmap/textures/medres/wmap-q.jpg
        479  03-09-04 21:39   wmap/wmap.dscNO
        842  03-09-04 21:38   wmap/WMAP.html
       2349  03-12-04 21:21   wmap/wmap-prot-readme.txt
       1900  03-09-04 21:48   wmap/wmap-readme.txt
        649  03-12-04 21:17   wmap/wmap-trans-prot.dsc
   --------                   -------
    1376355                   16 files

  ---

  If you restore this Zip archive into your Addons (or extras) folder, it should create its files in all the necessary sub-directories.

  This Addon displays the combined microwave map projected onto the inside of a sphere with a radius of about 13.8GLY. This is just slightly larger than the diameter of the observable universe, assuming a Hubble constant of 72 km/sec/Mpc. (Recombination, which generated the microwave background, occurred at z=1089, according to Spergel, et al. 2003, in First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters)

  Since the Q-band microwave map is dominated by radiation from our local Milky Way galaxy, it is projected onto the inside of a sphere with a radius of about 65K LY. This corresponds to the apparent extent of the disk of molecular hydrogen associated with our galaxy.

  The surface texture image files are 2Kx1K for ease of use. This Addon contains the Deep Space Catalog "wmap.dsc", which specifies both the Background and Q-Band objects. You may want to remove one of these declarations in order to minimize visual confusion.

  If you look closely, you'll see a seam along 180 degrees of longitude. After many attempts to get rid of it, I just gave up. There seem to be some off-by-1 scaling errors in the tool I've been using to convert the WMAP Aitoff projections into simple cylindrical maps. They are very difficult to compensate for.

  A view of deep space including the WMAP microwave map and other items.

  Cel:// URL for this viewpoint A Deep Space viewpoint

  Acknowledgements:

  This DSC catalog file uses images generated from the WMAP images of "The Microwave Sky" created by the "NASA/WMAP Science Team". See the Web page http://map.gsfc.nasa.gov/m_or.html for more information.

  The maps were converted from Aitoff/Hammer projections to simple cylindrical projections using the freeware program "Iris" v4. 12 by Christian Buil. See the Web page http://astrosurf.com/buil/ for more information.

3.5.10: Quasars and Active Galactic Nuclei.

This Addon adapts the catalog "Quasar & Active Galactic Nuclei (11th ed) Veron et al., December 2003" for use with Celestia v1.3.2pre3 or later.

• qagn.zip (1.3MB 6Mar04)
  
  

  ---

  Archive:  QAGN.ZIP
    Length     Date   Time    Name
   --------    ----   ----    ----
          0  02-28-04 15:36   QAGN/models/
     751960  03-06-04 08:59   QAGN/models/agn.cmod
      22065  03-06-04 08:59   QAGN/models/bllac.cmod
    2703933  03-06-04 09:00   QAGN/models/qsos.cmod
        658  03-06-04 09:04   QAGN/qagn.dsc
       1959  03-06-04 09:11   QAGN/QAGN-readme.txt
        645  03-05-04 23:26   QAGN/ViewQSOs.html
   --------                   -------
    3481220                   7 files

  ---

  If you restore this Zip archive into your Addons (or extras) folder, it should create its files in all the necessary sub-directories.

  The 11th edition catalog includes entries from the 2dF Quasar catalog and the first data release of the Sloan catalog, as well as previous catalogs.

  This Addon displays the locations of 15066 active galactic nuclei, 401 BL Lac objects, and 49820 QSOs (and others). They are color coded by the type of object: red = QSO, yellow though near white = Seyfert galaxies, cyan = BL Lacertae objects. Consult the CMOD files for the precise details of color assignments to the various categories.

  This Addon consists of the Deep Space Catalog qagn.dsc, which specifies the three model files qsos.cmod, agn.cmod and bllac.cmod, corresponding to the three categories mentioned above.

  A view of Quasars and AGN

  Cel:// URL for this viewpoint A Deep Space viewpoint

  
  
  Acknowledgements:

  This DSC catalog file was generated from the catalog file VII/235 Quasars and Active Galactic Nuclei (11th Ed.) (Veron+, 2003) at http://vizier.u-strasbg.fr/viz-bin/ftp-index?VII/235

  See below for the formal VizieR acknowledgment.

  For more information, see the abstract of the paper by Vernon et al. at http://simbad.u-strasbg.fr/cgi-bin/cdsbib?2003A%26A...412..399V

3.5.11:  Spatial Distribution of Bright Stars.

This Addon displays the positions of O and B stars and many nearby clusters. It was designed to be used with Celestia v1.6.1 but might work with previous versions.

• OB_Stars.zip (404KB, expands to 2.8MB 04May17)

  This Addon lets you display the density of the clouds of B stars within about 1500 LY. The colors of the marks vary from red (low density) through yellow (medium density) to white (high density).

  
  O and B star densities seen from a distance

  If you squint, you can see a trail of bright marks (high star density) leading from our Sun down to the Orion Nebula, which is at the lower right. Toward the upper right you'll see vast OB Associations of young stars.

  See below for the formal Hipparcos acknowledgment.

  If you restore this Zip archive into your Addons (or extras) folder, it should create its files in all the necessary sub-directories.

  ---

  Archive:  OB_Stars.zip
    Length      Date    Time    Name
  ---------  ---------- -----   ----
        882  05-03-2017 15:26   OB_Stars/cocd_ext1_lt1300.dsc
       4453  05-03-2017 15:23   OB_Stars/cocd_lt1300.dsc
       4403  03-27-2011 08:15   OB_Stars/GalacticPC.dsc
        791  05-04-2017 06:37   OB_Stars/install_readme.txt
       7501  04-30-2017 11:59   OB_Stars/messier_open.dsc
          0  05-04-2017 06:30   OB_Stars/models/
     145975  03-27-2011 08:15   OB_Stars/models/graticule.cmod
       1905  05-04-2017 06:22   OB_Stars/nebulae.dsc
       4640  05-04-2017 06:54   OB_Stars/OB_Stars_readme.txt
     665206  05-01-2017 13:47   OB_Stars/pulsars.stc
          0  05-04-2017 06:53   OB_Stars/scripts/
         82  05-03-2017 07:19   OB_Stars/scripts/mark_earth.cel
      11301  05-01-2017 17:54   OB_Stars/scripts/mark_o.cel
      19189  05-03-2017 12:07   OB_Stars/scripts/mark_obm_color-001.cel
     161481  05-03-2017 15:41   OB_Stars/scripts/mark_obm_color-002.cel
     220221  05-03-2017 15:43   OB_Stars/scripts/mark_obm_color-003.cel
     298741  05-03-2017 15:43   OB_Stars/scripts/mark_obm_color-004.cel
     488259  05-03-2017 15:44   OB_Stars/scripts/mark_obm_color-005.cel
     798856  05-03-2017 07:19   OB_Stars/scripts/mark_obm_color-all.cel
       4687  05-04-2017 06:53   OB_Stars/scripts/mark_psr.cel
      13226  05-04-2017 05:16   OB_Stars/scripts/mark_streams.cel
         18  04-30-2017 11:51   OB_Stars/scripts/unmark_all.cel
       3087  05-03-2017 15:14   OB_Stars/ViewOBM.html
       4640  06-16-2017 09:19   OB_Stars_readme.txt
        791  06-16-2017 09:19   install_readme.txt
  ---------                     -------
    2860335                     25 files
  

  ---

3.5.12: Sloan DR2 and DR13 Galaxies.

• sdss_dr13_galaxies.zip (v0.9; 30MB expands to 37MB, 06Jun17)

This Addon requires Celestia v1.6.1 or later. It includes a menu which allows you to view up to 2,204,870 galaxy positions. These positions were taken from the SDSS DR13 data release. 11 CMOD models are used instead of detailed DSC catalogs, so performance is reasonably good.

SDSS DR13 galaxy "pie" seen from a distance	This thumbnail links to a much larger image, where the dots representing SDSS DR13 galaxies are visible.
SDSS DR13 2 million stars seen from the side.	This thumbnail also links to a much larger image, but you still can't see all the dots.

---

• sdss-2dr-galaxies.zip (1.4MB, 24Mar04; updated 16may17)




---

Archive:  SDSS-2DR-GALAXIES.ZIP
  Length     Date   Time    Name
 --------    ----   ----    ----
        0  05-16-2017 13:16   sdss-2dr-galaxies/
        0  05-16-2017 10:48   sdss-2dr-galaxies/models/
  3702488  03-24-2004 06:37   sdss-2dr-galaxies/models/sdss-2dr-galaxies.cmod
     1511  03-24-2004 07:00   sdss-2dr-galaxies/QAGN-readme.txt
      275  03-24-2004 06:46   sdss-2dr-galaxies/sdss-2dr-galaxies.dsc
     1454  05-16-2017 13:16   sdss-2dr-galaxies/ViewSDSSgalaxies.html
---------                     -------
  3705728                     6 files

---

• sdss-dr2-v2.zip (4.4MB, 8Apr04)




---

Archive:  SDSS-DR2-V2.ZIP
  Length      Date    Time    Name
---------  ---------- -----   ----
     2669  05-16-2017 13:34   sdss-dr2-galaxies-readme.txt
        0  05-16-2017 13:35   sdss-dr2-v2/
        0  05-16-2017 13:25   sdss-dr2-v2/models/
   418703  04-05-2004 21:55   sdss-dr2-v2/models/sdss-dr2-0-360-qsos.cmod
  4149545  04-07-2004 23:59   sdss-dr2-v2/models/sdss-dr2-fan-n1.cmod
  4835287  04-08-2004 00:00   sdss-dr2-v2/models/sdss-dr2-fan-n2.cmod
   755144  04-07-2004 23:58   sdss-dr2-v2/models/sdss-dr2-fan-s1.cmod
  1012456  04-07-2004 23:58   sdss-dr2-v2/models/sdss-dr2-fan-s2.cmod
  1135035  04-07-2004 23:58   sdss-dr2-v2/models/sdss-dr2-fan-s3.cmod
     2669  05-16-2017 13:34   sdss-dr2-v2/sdss-dr2-galaxies-readme.txt
      997  04-08-2004 00:06   sdss-dr2-v2/sdss-dr2-galaxies.dsc
     1495  05-16-2017 13:31   sdss-dr2-v2/ViewSDSSgalaxies.html
---------                     -------
 12314000                     12 files

---

These Addons display the locations of selected galaxies from the Sloan Digital Sky Survey, second data release, with Celestia v1.3.2pre3 or later. v1 shows 78,055 galaxies, while v2 shows 243,673 with improved precision in distance over those in v1.

If you restore either of these Zip archives into your Addons (or extras) folder, it should create its files in all the necessary sub-directories.

You must have Celestia v1.3.2 prerelease 3 or later in order to be able to use CMOD model files.

SDSS 2DR galaxies seen from a distance	This thumbnail links to a much larger image, where the dots representing SDSS 2DR galaxies are visible. This Cel:// URL takes you to this viewpoint: SDSS 2DR galaxies from a distance

Acknowledgements:

The 2DR Addons above were generated from data downloaded using the SDSS SkyServer Spectro Query Server form at http://cas.sdss.org/dr2//en/tools/search/SQS.asp

The major constraints were redshift confidence >0.2 and 0.001 < z < 2.

See below for the formal SDSS acknowledgement.

Also, see the SDSS credits page at http://cas.sdss.org/dr2/en/credits/

3.5.13: IRAS PSCz Galaxies.

• iras-pscz.zip (580KB 4Apr04)

  ---

  Archive:  IRAS-PSCZ.ZIP
    Length     Date   Time    Name
   --------    ----   ----    ----
        419  04-04-04 13:28   iras-pscz/iras-pscz.dsc
       1714  04-04-04 13:27   iras-pscz/iras-pscz-readme.txt
          0  04-03-04 13:19   iras-pscz/models/
     986837  04-04-04 12:22   iras-pscz/models/iras-pscz_r-r.cmod
     987088  04-04-04 12:15   iras-pscz/models/iras-pscz_z.cmod
       1426  03-24-04 06:51   iras-pscz/ViewIRASgalaxies.html
   --------                   -------
    1977484                   6 files

  ---

  This Addon displays the locations of 16159 galaxies from the PSCz catalog (Saunders, et. al. 2000) when used with Celestia v1.3.2pre3 or later.

  If you restore this Zip archive into your Addons (or extras) folder, it should create its files in all the necessary sub-directories.

  This Addon consists of the Deep Space Catalog "iras-pscz.dsc", which specifies the model file "iras-pscz_z.cmod". It includes a commented-out reference to the model file "iras-pscz_r-r.cmod". The "_z" model uses distances as determined from spectrographic recessional velocities measured by IRAS. "Finger of God" effects are plainly visible in clusters of galaxies. The "_r-r" model uses distances determined by Rowan-Robinson (1988) and included in the PSCz catalog. Galaxies in the same cluster usually are all shown at the same distance. Each of the 235 clusters of galaxies listed in the PSCz catalog have been given a unique random color. However, no attempt was made to provide distinctively different colors to clusters which are near one another.

  You must have Celestia v1.3.2 prerelease 3 or later in order to be able to use CMOD model files.

  IRAS PSCz galaxies seen from a distance	This thumbnail links to a much larger image, where the dots representing galaxies are visible. This Cel:// URL takes you to this viewpoint: IRAS PSCz galaxies from a distance

  Acknowledgements:

  This DSC catalog was generated from a copy of the catalog "VII/221 PSCz catalog (Saunders+, 2000)" downloaded from VizeR.

3.5.14: ATNF Pulsars.

• atnf_pulsars_v5.zip (274KB, 06May17)

  This Celestia Addon displays the 2617 pulsars which are listed in ATNF Pulsar Catalog v1.56 at http://www.atnf.csiro.au/research/pulsar/psrcat/ as of May 1, 2017.

  ---

  Archive:  atnf_pulsars_v5.zip
    Length      Date    Time    Name
  ---------  ---------- -----   ----
       3069  05-06-2017 13:27   atnf_pulsars_v5/atnf_pulsars_v5_readme.txt
     664902  05-06-2017 10:43   atnf_pulsars_v5/atnf_v156.stc
        791  05-04-2017 06:37   atnf_pulsars_v5/install_readme.txt
          0  05-06-2017 13:28   atnf_pulsars_v5/scripts/
     251994  05-06-2017 06:38   atnf_pulsars_v5/scripts/mark_density_all_v5.cel
      44449  05-06-2017 13:01   atnf_pulsars_v5/scripts/mark_density_inter_v5.cel
      27557  05-06-2017 13:02   atnf_pulsars_v5/scripts/mark_density_thick_v5.cel
     165469  05-06-2017 12:49   atnf_pulsars_v5/scripts/mark_density_thin_v5.cel
     251996  05-06-2017 10:03   atnf_pulsars_v5/scripts/mark_period_all_v5.cel
      48558  05-06-2017 10:08   atnf_pulsars_v5/scripts/mark_period_fast_v5.cel
      95079  05-06-2017 10:12   atnf_pulsars_v5/scripts/mark_period_slow_v5.cel
         75  03-27-2011 08:27   atnf_pulsars_v5/scripts/mark_Sol.cel
         18  03-27-2011 08:27   atnf_pulsars_v5/scripts/unmark_all.cel
        902  05-06-2017 07:34   atnf_pulsars_v5/View_Pulsars.html
  ---------                     -------
    1554859                     14 files

  ---

  View_Pulsars.html (in the Addon's main directory) is a Web file containing Cel:// URLs which should take you to viewpoints above and in the plane of our Milky Way Galaxy. From those viewpoints you can observe the spatial and frequency distributions of the pulsars listed in the ATNF database.

  The /scripts/ directory contains the .CEL scripts listed below which show the distributions of the pulsars. Colors go from red for the lowest values through yellow to white at the highest.

  mark_period_all_v5.cel.......mark all pulsars, colored by frequency
  mark_period_slow_v5.cel......mark slow pulsars, "
  mark_period_fast_v5.cel......mark fast pulsars, "
  
  mark_density_all_v5.cel......mark all pulsars, colored by density
  mark_density_thin_v5.cel.....mark thin-disk pulsars, "
  mark_density_thick_v5.cel....mark thick-disk pulsars, "
  mark_density_inter_v5.cel....mark pulsars between the two regions, "
  
  mark_Sol.cel................mark the Sun's position
  unmark_all.cel..............clear all marks
  

  ---

• atnf_pulsars_v2.zip (76KB, 23Dec04)

  ---

  Archive:  ATNF_PULSARS_V2.ZIP
    Length     Date   Time    Name
   --------    ----   ----    ----
        285  12-18-04 15:55   atnf_pulsars_v2/pulsars.html
     224036  12-23-04 21:48   atnf_pulsars_v2/pulsars_atnf_v2.stc
     139582  12-23-04 21:48   atnf_pulsars_v2/pulsars_density_v2.cel
     132028  12-23-04 21:49   atnf_pulsars_v2/pulsars_periods_v2.cel
       1977  12-23-04 21:55   atnf_pulsars_v2/pulsars_readme_v2.txt
         18  12-18-04 14:28   atnf_pulsars_v2/unmark-all.cel
   --------                   -------
     497926                   6 files

  ---

  This Addon works with Celestia v1.3.1 or later. It displays the locations of the 1509 pulsars listed in the ATNF database at http://www.atnf.csiro.au/research/pulsar/psrcat/

  Six files are provided:

  1. pulsars_atnf_v2.stc
     is a catalog which defines them as neutron stars with locations and periods as specified in the ATNF database.
  2. pulsars_density_v2.cel
     is a script which marks the pulsars with shades of red through yellow to white proportional to their density in space. The location of the sun is marked by a large green +
  3. pulsars_period_v2.cel
     is a script which marks the pulsars with shades of red, green and blue proportional to the log10 of their frequencies: red are the slowest, green intermediate, and blue spin the fastest. The location of the sun is marked by a large green +
  4. unmark-all.cel
     is a script which removes all marks. The unmarkall command also is included at the beginning of the two pulsar scripts to simplify switching between them.
  5. pulsars.html
     includes a Cel://URL to place you at an appropriate distance from the Milky Way to see the pulsar distribution.
  6. pulsars_readme_v2.txt
     which contains the same information you're reading here.

  Although some effects can be seen which may be due to where pulsar searches have looked, the outlines of nearby arms of the Milky Way can be seen clearly.

  Improvements for v2:

  • repaired truncated pulsar names,
  • repaired truncated ra & dec values
  • output period in double precision
  • shortened color values

  ATNF pulsar distribution	This thumbnail links to a much larger image. This Cel:// URL takes you to this viewpoint: ATNF pulsar distribution

  Acknowledgements:

  This DSC catalog was generated from the database provided by the Australia Telescope National Facility at http://www.atnf.csiro.au/research/pulsar/psrcat/

3.5.15: Milky Way Objects.

• galaxy_map.zip (650KB, 11Dec06)

  Translated for use with Celestia by S. Ball, December, 2006.
  Contents copyright © 2006, Kevin Jardine & Selden Ball.

  This Addon was created from a spreadsheet of Milky Way objects provided by Kevin Jardine. See http://galaxymap.org/

  This version (v2) of the update disables the DSC catalogs and instead uses scripts to mark the objects. This provides significantly better performance.

  Restore this Zip file into your "extras" or "Addons" directory. This should create the directory "galaxy_map" containing this documentation, its Catalog files, scripts, models, textures and source directory.

  ---

  The catalogs and scripts show 8978 objects in 4 categories. Of the 9041 objects in the original spreadsheet, 63 nebulae do not have valid distances and are not shown. They are in the spreadsheet because Kevin has pictures of them on his Web site.

  A separate script is provided for each of the categories. If you select (double-click-on) these scripts, you'll see the following:

  milky-way-cl.cel	1013 clusters of stars represented by blue circles
  milky-way-co.cel	1899 molecular clouds represented by green circles
  milky-way-hii.cel	901 nebulae (mostly HII regions) represented by red circles
  milky-way-st.cel	5165 stars represented by white circles. Many of these stars are far beyond Celestia's 16KLY star distance limit, including a few Wolf-Rayet stars at the galactic center.
  unmark-all.cel	removes all marks
  markSol.cel	displays the location of our Sun

  STC Star catalogs are used to define the objects' locations so the scripts have objects to mark. Stars are drawn efficiently by Celestia, but have the problem that these objects cannot easily be selected or labeled because of the distances to them. All of these objects, including the stars, all are arbitrarily classed as M9. No luminosity or spectral information is provided in the spreadsheet used to create the catalogs.

  DSC Nebula objects are not (yet?) handled efficiently by Celestia, so the DSC catalog files included here have been disabled by appending the letters "NO" to their filetypes. This causes Celestia to ignore them. If you enable the DSC catalogs, you'll be able to select the objects and see their labels.

  A separate DSC catalog file is provided for each of the four categories. If you enable these Catalogs by removing "NO" from their filetypes, you'll see the following:

  milky-way-cl.dsc	1013 clusters represented using the blue spherical model "cl.cmod"
  milky-way-co.dsc	1899 molecular clouds represented using the green model "co.cmod"
  milky-way-hii.dsc	901 nebulae (mostly HII regions) represented using the red model "hii.cmod"
  milky-way-st.dsc	5165 stars represented using the white model "st.cmod" Many of these stars are far beyond Celestia's 16KLY star distance limit, including a few Wolf-Rayet stars at the galactic center.

  All of the DSC models are translucent, since some of the objects are inside others. No attempt has been made to display the actual shapes of any of these objects. All of the models are spherical.

  The star models are drawn with a radius of 50 ly just to make them readily visible from a distance. Some of these stars already are included in Celestia, but some are not. Of course, Celestia defines the locations of many stars, which it shows as points.

  Celestia does not (yet?) provide a way to select different Nebula object types to be displayed at runtime. However, you can change the filetypes of the catalogs that you do not want to see so that Celestia won't recognize them when it starts up. I usually disable catalogs by appending the letters NO to the filetype. That way Celestia doesn't recognize them and it's obvious which catalogs I've disabled.

  ---

  Here are a few viewpoints to display these objects in Celestia. Note that these URLs work best in Celestia v1.5.0. Celestia v1.4.1 provides only a generic galaxy model, while v1.5.0 has one based on recent surveys of the Milky Way.

  • Milky Way from above (Galactic North)
  • objects from above, galactic center is down
  • plane of Milky Way (seen from l2=270)

  ---

  Although Kevin thinks that the currently available surveys of individual galactic objects provide poor evidence for a spiral structure, I was pleasantly surprised at the good match between his catalog and the spiral structure represented by the model of the Milky Way that is provided with Celestia v1.5.0.

  ---

  The contents of this Addon are copyright © 2006, Kevin Jardine & Selden Ball. All rights reserved. This Addon may be freely redistributed for educational purposes. It may not be used for commercial advantage without the written permission of the authors.

3.5.16: Hipparcos Star Catalog.

• simbad-hipparcos_v114.zip
  (1.9 MB, expands to 2.2 MB, 30Oct18)

This Addon for Celestia v1.6.1 or later provides an updated binary catalog of 114357 stars from the Hipparcos Catalog. It provides star distances, coordinates, spectral types and visual magnitudes obtained from Simbad, as provided by Gaia DR2 and other recent research.

Full details of how this database was created, including software and intermediate data files, is available upon request.

1. Restore stars_114.dat to Celestia/data/,
2. rename your current stars.dat to be (for example) stars_v161.dat
3. rename (or copy) stars_114.dat to be stars.dat
4. start Celestia.

Contents

• 3.5.1: Open Clusters.
  
• 3.5.2: Globular Clusters, Galaxies and Galaxy Clusters.
  
• 3.5.3: Planetary Nebulæ.
  
• 3.5.4: ExtraSolar Planets.
  
• 3.5.5: Messier Catalogs.
  
• 3.5.6: Sloan DR1 Quasars.
  
• 3.5.7: 2dF Galaxy Redshift Survey.
  
  • 3.5.7.1: 100K preliminary data release.
    
  • 3.5.7.2: Final data release.
    
• 3.5.8: Hipparcos Errors.
  
• 3.5.9: WMAP Microwave Maps.
  
• 3.5.10: Quasars and Active Galactic Nuclei.
  
• 3.5.11: Spatial Distribution of Bright Stars.
  
• 3.5.12: Sloan DR2 and DR13 Galaxies.
  
• 3.5.13: IRAS PSCz Galaxies.
  
• 3.5.14: ATNF Pulsars.
  
• 3.5.15: Milky Way Objects.
  
• 3.5.16: Hipparcos Star Catalog.
  

A.1: Signature.
A.2: Admonishment.
A.3: Disclaimer.
A.4: Acknowledgements.

• Selden's List of Resources for Celestia

A.1: Signature.

This Web page is maintained by Selden Ball at Wilson Lab.

seb@lepp.cornell.edu

A.2: Admonishment.

Please send any questions, comments or corrections to seb@lepp.cornell.edu
Alternatively, you can post a message (anonymously or otherwise) on Celestia's Web Forum or use its Private Message page.

If you don't tell me that something's missing, unclear or wrong, I can't improve it.

A.3: Disclaimer.

The author disclaims all liability and endorsement.
Copyrights may apply.
For details, please read the full text of his disclaimer.

A.4: Acknowledgements.

A.4.1: Sloan Digital Sky Survey.

Non-commercial use

Non-commercial scientific and technical publications using SDSS data should include the following acknowledgment of our funding sources and participating institutions:

Funding for the Sloan Digital Sky Survey (SDSS) has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Aeronautics and Space Administration, the National Science Foundation, the U.S. Department of Energy, the Japanese Monbukagakusho, and the Max Planck Society. The SDSS Web site is http://www.sdss.org/.

The SDSS is managed by the Astrophysical Research Consortium (ARC) for the Participating Institutions. The Participating Institutions are The University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, The Johns Hopkins University, Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, University of Pittsburgh, Princeton University, the United States Naval Observatory, and the University of Washington.

Please make use of IAU designations for SDSS sources in your publications.

A.4.2: VizieR.

The prefered reference for the usage of VizieR is the following paper:
Ochsenbein F., Bauer P., Marcout J., 2000, The VizieR database of astronomical catalogues. A&AS 143, 221

A.4.3: Hipparcos Catalog.

The correct reference for the catalogues is as follows:
ESA, 1997, The Hipparcos and Tycho Catalogues, ESA SP-1200 (See http://astro.estec.esa.nl/Hipparcos/catalog.html)

A.4.4: 2dF Catalog.

The 2dF Galaxy Redshift Survey: Final Data Release, Colless M.M, et al., 2003, astro-ph/0306581 [ astro-ph/0306581 ]

A.4.5: Simbad Catalog Server.

This research has made use of information obtained from the Simbad astronomical database http://simbad.u-strasbg.fr/simbad/ operated at CDS, Strasbourg, France. 2000,A&AS,143,9 , "The SIMBAD astronomical database", Wenger et al.