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Partly updated 5/2019 using Aladin prototype v10.1 / based on v10.128 (12/5/2019) and TOPCAT v4.6-3 on MacOS
Set up for planetary
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mapping
Assuming longitude is E-handed (EPN-TAP convention, and IAU convention in planetocentric frames):
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• From v4.6-3, the SkyPlot window is more versatile for maps (see above)
• Standard setup for planetary maps and HiPS in Aladin:
In the fields on top of the window, set Frame to "Planet" or "Planet deg" - this will use a grid in degrees (counted E and W from 0 - not the IAU convention, but OK)
Set Projection to Sphere (actually: orthographic) or Cartesian (actually: cylindrical) for most applications. Aitoff is ~ similar to sinusoidal, with all the surface visible at once; keep it centered on (0°,0°) !
In properties, .longitude should be set to "ascending" for correct orientation.
Healpix generation from a table in TOPCAT
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