Update README texture sources

README

@@ -47,31 +47,56 @@ Scientific Data Base
 Texture maps
 ------------
 
-# Askaniy (https://www.deviantart.com/askaniy)
+# Askaniy Anpilogov (https://www.deviantart.com/askaniy)
 
-   Textures of Phobos, Jupiter, Ganymede, Saturn, Uranus, Puck, Neptune,
-   Triton, Pluto, Charon, Nix, Hydra, Mathilde, Eros, Ryugu, Bennu, and Arrokoth.
+   Phobos' texture is a composite of two maps by Phil Stooke for surface details
+   and albedo features.
 
-   Haumea's (fictional) ring texture is by Askaniy.
+   The Jupiter 2018 texture is a combination of the Hubble OPAL map and Juno poles
+   from Björn Jónsson's texture.
 
-   The Callisto texture was made by Askaniy from JVV'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.
 
-# FarGetaNik (https://www.deviantart.com/fargetanik)
+   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.
 
-   Stars:
-   O, B, A star textures derived from SDO images of a Sun without spots
-   F, G, K star textures derived from SDO images featuring spots
-   L star texture derived from IR images of the Sun by SDO
-   White dwarf texture is a grayscale version of the A star texture
+   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.
 
-   Courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.
+   The Nix and Hydra maps were created by reprojecting processed New Horizons images.
 
-   M star texture based on images from the Swedish 1-m Solar Telescope (SST),
-   operated by the Institute for Solar Physics:
-      https://ttt.astro.su.se/isf/gallery/
+   Mathilde's texture is derived from a map by Phil Stooke.
 
-   The observers for the individual images used are Oddbjorn Engvold, Jun Elin Wiik,
-   Luc Rouppe van der Voort (Oslo); Dan Kiselman, Mats Löfdahl, Göran Scharmer, Kai Langhans, Mats Löfdahl (ISP)
+   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
 
@@ -110,13 +135,10 @@ Texture maps
 
    Jupiter's rings are derived from spacecraft imagery found on the NASA photojournal.
 
-   Io's surface texture is derived from USGS maps and JVV's map.
-
    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.
-   Tethys and Dione normal maps are derived from models by Rob Gaskell.
 
    Phoebe is derived from a texture by JVV.
 
@@ -127,7 +149,14 @@ Texture maps
       http://www.robingilbert.com/blog/2017-08-20-atlas-of-miranda/
    Normal map derived from a DEM by Paul Schenk
 
-   Pluto and Charon normal maps derived from the USGS DEMs.
+   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
@@ -136,12 +165,25 @@ Texture maps
 
 # 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.
 
-# Snowfall-The-Cat (https://www.deviantart.com/snowfall-the-cat)
+# 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.
@@ -150,10 +192,14 @@ Texture maps
       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
 
-# The Metis, Amalthea, Thebe, Hyperion, Gaspra, Ida, Steins and Lutetia maps are
-  by ItzImcool.
+# Björn Jónsson (https://bjj.mmedia.is/)
 
-# Venus's clouds are from Björn Jónsson, recolored by FarGetaNik.
+   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
@@ -164,15 +210,17 @@ Texture maps
   and further improved by nussun based on a NASA Earth Observatory image:
     https://earthobservatory.nasa.gov/features/NightLights/page3.php
 
-# Titan's surface texture is a composite of Cassini ISS and Radar maps from USGS,
-  created by FarGetaNik and further modified by Askaniy. Titan's specular texture
-  is by Askaniy. Titan's cloud texture is by Fridger Schrempp, based on resources
-  available from the imaging site (Ciclops) of the Cassini mission http://ciclops.org/
+# 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.
 
-# Chariklo's ring texture is by Zemlyanin.
+# 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 and venuslike) and the asteroid.jpg
-  texture were created by cubicApocalypse, licensed under CC-BY 4.0.
+# 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.