Scientific Data Base
--------------------

# Grant Hutchison
    Supplied the correct orientations for the major planets, their moons, and a
    number of asteroids and also worked on these data files:
        solarsys.ssc, nearstars.stc, extrasolar.ssc, extrasolar.stc, earth_locs.ssc

# Fridger Schrempp
    Complete NGC/IC galaxy database + local group galaxies (galaxies.dsc)

    Database of globular clusters (globulars.dsc)

    Database of visual and spectroscopic binaries (stars-visualbins.stc,
    stars-spectbins.stc)

    World-capitals.ssc

    Asterisms.dat

# Andrew Tribick
    Significant update of the star database based on Gaia EDR3 data
    (see: https://github.com/ajtribick/celestia-gaia-stardb);
    licensed under CC-BY-SA 4.0.

    CHARM2 stellar radii (stars-charm2.stc)

    Open cluster catalog (openclusters.dsc)

# LukeCEL
    Complete update of stars-near.stc

# Thomas Tarrants (Sirius_Alpha)
    Updated exoplanet catalogue (extrasolar.stc, extrasolar.ssc)

# Askaniy
    Updated location files (https://github.com/Askaniy/CelestiaLocationsMaker)

# SevenSpheres
    Substantial additions and improvements to starnames.dat and other data files

    Pulsar catalog (https://github.com/SevenSpheres/atnf-pulsars)

# Pedro Garcia
    White dwarf catalog (whitedwarfs.stc)

Texture maps
------------

# Askaniy Anpilogov (https://www.deviantart.com/askaniy)

   Phobos' texture is a composite of two maps by Phil Stooke for surface details
   and albedo features.

   The Jupiter 2018 texture is a combination of the Hubble OPAL map and Juno poles
   from Björn Jónsson's texture.

   Ganymede's texture is derived from the USGS color map, with reprojections of
   Juno images by Brian Swift added and gaps filled by Björn Jónsson's texture.

   Titan's surface texture is based on the Cassini VIMS and ISS map from
   B. Seignovert et al. at https://data.caltech.edu/records/8q9an-yt176, calibrated
   to match visible-light panoramas of the Huygens landing site. The lakes
   (and corresponding specular mask) are hand-painted from radar mosaics of the
   polar areas.

   Uranus' texture is a combination of the 2015 Hubble OPAL map and a map made from
   Voyager 2 images by Björn Jónsson:
      https://www.planetary.org/space-images/cylindrical-map-of-uranus-from-voyager-2-data

   The Puck map was created from a processed Voyager 2 image.

   Triton is derived from the USGS map.

   Pluto's surface texture is a composite of a greyscale map by USGS and a NASA color map,
   with maps by Björn Jónsson and Astra-Planetshine blended in.

   The Nix and Hydra maps were created by reprojecting processed New Horizons images.

   Mathilde's texture is derived from a map by Phil Stooke.

   Eros' texture is a composite of a map by Phil Stooke and a map from the NEAR team:
      https://sbnarchive.psi.edu/pds3/near/NEAR_A_MSI_5_DIM_EROS_ORBIT_V1_0/browse/basemaps/pngs/f4_16_00n000.png

   Ryugu's texture is derived from the JAXA color map:
      https://jlpeda.jaxa.jp/en/product/archive/detail_02/

   Bennu's texture is derived from the USGS albedo map, with polar areas filled
   by the shaded map.

   The Arrokoth map was created from a composite image processed by Roman Tkachenko.

   The M star texture was hand-painted by Askaniy.

# FarGetaNik (https://www.deviantart.com/fargetanik)

   Stars:
   L star texture derived from IR images of the Sun by SDO
   (Courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.)

   T star texture derived from a fictional texture by John Van Vliet

   Mercury:
   Normal map derived from USGS DEM, details improved with a texture reposted by Kexitt.
   Surface texture based on USGS color map, gaps filled with larger greyscale map.

   Venus:
   Normal map derived from USGS DEM.
   Surface texture based on John Van Vliet's addon.

   Earth:
   Surface texture derived from:
      https://www.earthstartsbeating.com/2019/01/16/mappamondo/
   and improved by the specular map derived from Natural Earth II by Tom Patterson
      http://www.shadedrelief.com/natural3/pages/extra.html
   Normal map derived from the BMNG datadet.
   Cloud Texture from the BMNG dataset

   Moon:
   Normal map derived from USGS DEM.
   Surface texture derived from LRO map posted on the Celestial Matters forum:
      http://forum.celestialmatters.org/viewtopic.php?f=2&t=800
   Improved with the CGI Moon Kit
      https://svs.gsfc.nasa.gov/4720

   Mars:
   Surface texture based on USGS Viking map, details are from Surveyor data:
      http://www.msss.com/mgcwg/mgm/
   Color and cloud texture extracted from a map on the NASA photojournal, brightness adjusted with the USGS albedo map.
   Normal map derived from USGS DEM.

   Ceres:
   Texture is a composite of individual color filter maps by NASA, gaps improved by SevenSpheres
   Normal map derived from USGS DEM.

   Jupiter's rings are derived from spacecraft imagery found on the NASA photojournal.

   Saturn's ring texture is a composite of data found on Björn Jónsson's site.

   Mimas, Enceladus, Tethys, Dione, Rhea, Iapetus textures are derived from enhanced color maps by Paul Schenk, found on
   the NASA photojounal. Rhea texture is based on an Albedo map by Björn Jónsson, details added from the JPL map.

   Phoebe is derived from a texture by JVV.

   Uranus & Neptune's rings are composites of transparency data and Voyager imagery.

   Miranda:
   Texture by Robin Charles Gilbert and shading reduced with the normal map:
      http://www.robingilbert.com/blog/2017-08-20-atlas-of-miranda/
   Normal map derived from a DEM by Paul Schenk

   Pluto normal map is derived from the USGS DEM.

   Charon:
   Texture is a composite of a color map by Steve Albers:
      ftp://public.sos.noaa.gov/astronomy/charon/
   and a refined greyscale map by USGS, with unexplored areas filled using a map created by Marc Buie
   at Lowell Observatory, and recolored by Askaniy.
   Normal map is derived from the USGS DEM.

   Vesta:
   Texture is a composite of individual color filter maps, gaps filled with a shaded texture improved by a normal map
   made from topography data by USGS.
      https://sbn.psi.edu/pds/

# The Europa texture is by John van Vliet.

   The Callisto texture was made by Askaniy from JVV's texture.

   Tethys and Dione normal maps are derived by JVV from models by Rob Gaskell.

   Other textures derived from work by JVV are listed above.

# Astra-Planetshine, formerly Snowfall-The-Cat (https://www.deviantart.com/astra-planetshine)

   Textures of Larissa (based on Phil Stooke's map) and Proteus.

# ItzImcool (https://www.deviantart.com/itzimcool)

   Io's surface texture is derived from an USGS photomosaic, merged with reprojections
   of JunoCam images by Gerald Eichstädt, Jason Perry and John Rogers, and retouched
   by ItzImcool. The specular mask was hand-painted, matching the surface map.

   The Metis, Amalthea, Thebe, Hyperion, Gaspra, Ida, Steins and Lutetia maps were
   created from reprojections of spacecraft imagery.

# Phil Stooke

   Janus, Prometheus and Epimetheus maps are from Phil Stooke.

   The Deimos and Itokawa maps are from:
      Stooke. P., Stooke Small Bodies Maps V3.0. MULTI-SA-MULTI-6-STOOKEMAPS-V3.0. NASA Planetary Data System, 2015.
      https://sbnarchive.psi.edu/pds3/multi_mission/MULTI_SA_MULTI_6_STOOKEMAPS_V3_0/document/00_map_guide.html

# Björn Jónsson (https://bjj.mmedia.is/)

   Venus's clouds are from Björn Jónsson, recolored by FarGetaNik.

   Jupiter's texture from Cassini and Juno data, recolored by Askaniy.
   Originally available at: https://www.planetary.org/space-images/merged-cassini-and-juno

   Textures for Saturn and Neptune, improved and recolored by Askaniy.

# The textures for the Uranian satellites were created by Ivan Rivera from JPL
  data. His Celestia page is: http://bruckner.homelinux.net/celestia.html

# Earth's night texture created by FarGetaNik from the BMNG dataset and colored
  with a night texture by JVV, posted on the Celestia forum:
    http://celestiaproject.space/forum/viewtopic.php?f=23&t=17477
  and further improved by nussun based on a NASA Earth Observatory image:
    https://earthobservatory.nasa.gov/features/NightLights/page3.php

# Titan's cloud texture is by ShadowDragon777, based on processed images from
  Gordan Ugarković and Kevin M. Gill.

# Ring textures of Haumea, Quaoar, Chiron and Chariklo are by AstroChara.

# The O, B, A, F, G, K star and white dwarf textures were created by MrSpace43
  from Solar Dynamics Observatory (SDO) images, and calibrated to blackbody colors
  by AstroChara.

# The exoplanet textures (exo-classN, neptunelike, rocky and venuslike), asteroid.jpg
  and icy.jpg were created by cubicApocalypse, licensed under CC-BY 4.0.

# The icymoon.jpg texture was created by trappistplanets based on an image of Methone.

Note on content from JPL
------------------------
Some content in Celestia, including texture maps and models, comes from JPL
websites. That content is subject to the JPL Image Use Policy, a copy of which
appears below (as captured on 2020-July-13). The latest version of this policy
can be found at https://www.jpl.nasa.gov/imagepolicy/. Also refer to
https://space.jpl.nasa.gov/faq.html for clarity on how textures/models are
covered.

# JPL Image Use Policy
# Unless otherwise noted, images and video on JPL public web sites (public
# sites ending with a jpl.nasa.gov address) may be used for any purpose
# without prior permission, subject to the special cases noted below.
# Publishers who wish to have authorization may print this page and
# retain it for their records; JPL does not issue image permissions on an
# image by image basis.
#
# By electing to download the material from this web site the user agrees:
# 1. that Caltech makes no representations or warranties with respect to
# ownership of copyrights in the images, and does not represent others who
# may claim to be authors or owners of copyright of any of the images, and
# makes no warranties as to the quality of the images. Caltech shall not be
# responsible for any loss or expenses resulting from the use of the images,
# and you release and hold Caltech harmless from all liability arising from
# such use.
#
# 2. to use a credit line in connection with images. Unless otherwise noted
# in the caption information for an image, the credit line should be
# "Courtesy NASA/JPL-Caltech."
#
# 3. that the endorsement of any product or service by Caltech, JPL or NASA
# must not be claimed or implied.
#
# Special Cases:
# * Prior written approval must be obtained to use the NASA insignia logo
# (the blue "meatball" insignia), the NASA logotype (the red "worm" logo)
# and the NASA seal. These images may not be used by persons who are not
# NASA employees or on products (including Web pages) that are not NASA
# sponsored. In addition, no image may be used to explicitly or implicitly
# suggest endorsement by NASA, JPL or Caltech of commercial goods or
# services. Requests to use NASA logos may be directed to Bert Ulrich, Public
# Services Division, NASA Headquarters, Code POS, Washington, DC 20546,
# telephone (202) 358-1713, fax (202) 358-4331, email bert.ulrich@hq.nasa.gov.
#
# * Prior written approval must be obtained to use the JPL logo (stylized JPL
# letters in red or other colors). Requests to use the JPL logo may be
# directed to the Institutional Communications Office, email
# instcomm@jpl.nasa.gov.
#
# * If an image includes an identifiable person, using the image for
# commercial purposes may infringe that person's right of privacy or publicity,
# and permission should be obtained from the person. NASA and JPL generally do
# not permit likenesses of current employees to appear on commercial products.
# For more information, consult the NASA and JPL points of contact listed above.
#
# * JPL/Caltech contractors and vendors who wish to use JPL images in
# advertising or public relation materials should direct requests to the
# Institutional Communications Office, email instcomm@jpl.nasa.gov.
#
# * Some image and video materials on JPL public web sites are owned by
# organizations other than JPL or NASA. These owners have agreed to make their
# images and video available for journalistic, educational and personal uses,
# but restrictions are placed on commercial uses. To obtain permission for
# commercial use, contact the copyright owner listed in each image caption.
# Ownership of images and video by parties other than JPL and NASA is noted in
# the caption material with each image.

3D Models
---------

# New space bodies models can be found in Greg Frieger's 3D Asteroid Catalogue:
    https://space.frieger.com/asteroids/
  The individual models are from various sources, listed individually.

# The Galileo spacecraft model is by FarGetaNik, based on the NASA model:
    https://nasa3d.arc.nasa.gov/detail/jpl-vtad-galileo
  The model of Galileo's probe is by Snowfall, originally from here:
    http://www.celestiamotherlode.net/addon/addon_1644.html

# Models of Mars Global Surveyor and Mars Odyssey were created by Shrox:
    http://www.shrox.com/
  They are included under the Creative Commons Attribution 4.0 International
  License (CC BY 4.0):
    https://creativecommons.org/licenses/by/4.0/

# The Cassini and Huygens models are by Jack Higgins:
    http://homepage.eircom.net/~jackcelestia/

# The 3D model of ISS is a representation of the station created by NASA-VTAD
  on April 22, 2019:
    https://science.nasa.gov/resource/international-space-station-3d-model/
  The configuration shown is what the ISS looked like from May
  2011 until February 2015, shortly after STS-134 (Endeavour)
  delivered the AMS and ELC-3 pallets to the station. Model and textures were
  converted for use in Celestia by DaveBowman2001

# The 3D model of Mir is a representation of the station as it appeared after
  the arrival of the Priroda module on April 26, 1996. This is its complete
  configuration until it was deorbited on March 21, 2001. Model and textures
  by DaveBowman2001

# The Apophis shape model is by Brozović et al. 2018, available from PDS:
    https://sbn.psi.edu/pds/resource/apophis_shape.html

# 3D asteroid models of Toutatis, Geographos, 1998 KY26, Bacchus,
  Castalia and Golevka are courtesy of Scott Hudson, Washington State
  University. Originally found here:
    http://users.tricity.wsu.edu/~hudson/Research/Asteroids/index.htm
  On August 20, 2020, Scott Hudson waived the commercial use restrictions on
  these models, permitting unrestricted use of them.
  Higher-resolution versions of Toutatis, Geographos and Bacchus are available
  from PDS: https://sbn.psi.edu/pds/resource/rshape.html

# Models of Phobos and Deimos are from Ernst et al. 2023:
    https://doi.org/10.1186/s40623-023-01814-7
  (available at https://sbmt.jhuapl.edu/shared-files/)

# The Mimas, Phoebe, Eros and Itokawa models are by Rob Gaskell:
    https://sbn.psi.edu/pds/resource/mimasshape.html
    https://sbn.psi.edu/pds/resource/phoebeshape.html
    https://sbn.psi.edu/pds/resource/erosshape.html
    https://sbn.psi.edu/pds/resource/itokawashape.html

# 3D models of Amalthea, Thebe, Larissa, Proteus, Gaspra, Mathilde and Halley
  are derived from Phil Stooke's Cartography of Non-Spherical Worlds and the
  Stooke Small Body Shape Models dataset at PDS.
    https://sbn.psi.edu/pds/resource/stkshape.html

# The Ida model is derived from Peter Thomas' Small Body Optical Shape Models dataset:
    https://sbn.psi.edu/pds/resource/oshape.html

# Models of Pan, Daphnis, Atlas, Prometheus, Pandora, Epimetheus, Janus,
  Telesto, Calypso, Helene, and Hyperion are from:
    https://sbn.psi.edu/pds/resource/saturnsatshapes.html

# The Vesta model is from:
    https://sbn.psi.edu/pds/resource/dawn/dwnvfcshape.html

# The Moshup and Squannit models are from:
    https://sbn.psi.edu/pds/resource/jplradarshape.html

# Models of 2001 SN263 and its moons are from:
    https://sbn.psi.edu/pds/resource/shape153591.html

# The Steins and Lutetia models are from NASA PDS:
    https://pdssbn.astro.umd.edu/holdings/ro-a-osinac_osiwac-5-steins-shape-v1.0/dataset.shtml
    https://pdssbn.astro.umd.edu/holdings/ro-a-osinac_osiwac-5-lutetia-shape-v1.0/dataset.shtml

# The Metis model is by ItzImcool.

# The Puck model is by Askaniy.

# The Nix and Hydra models are by Simon Porter:
    https://figshare.com/articles/online_resource/Shape_Model_of_Nix/12779948
    https://figshare.com/articles/online_resource/Shape_Model_of_Hydra/12779975
  The Arrokoth model is from Porter (2024):
    https://doi.org/10.26007/97r3-1e19

# The Ryugu model is from:
    https://data.darts.isas.jaxa.jp/pub/hayabusa2/paper/Watanabe_2019/README.html

# Bennu's model is a simplified version of the OLA v20 PTM shape model from NASA's
  Scientific Visualization Studio: https://svs.gsfc.nasa.gov/5069

# Models of Didymos and Dimorphos come from the DART Shapemodel Archive Bundle at PDS:
    https://doi.org/10.26007/96fn-p578

# The Psyche model is from Shepard et al. 2021: https://doi.org/10.3847/PSJ/abfdba

# Models of asteroids Pallas, Juno, Iris, Hygiea, Eugenia, Sylvia, Elektra,
  Kleopatra, and Interamnia are based on VLT/SPHERE imaging:
    https://doi.org/10.1051/0004-6361/202141781
  The original models are available here:
    https://observations.lam.fr/astero/