[fitsbits] Az/El and moving body basis system support

[Mark Calabretta]

On Thu 2002/04/18 15:44:56 +0200, Jennifer Hatchell wrote
in a message to: fitsbits at donar.cv.nrao.edu

>- output in azimuth and elevation

No topographic coordinate types are defined because the keywords
necessary to record accurate times and positions needed to specify
such systems are not available in FITS.

>- tracking a solar system body, where the body's coordinate frame
>rotates with respect to the standard astronomical frames

Further to Steve's reply, if by the above you mean a celestial frame
in which the body is stationary, e.g. helioecliptic coordinates as
opposed to heliographic coordinates, then no, they are not defined
specifically.  Steve's answer still applies - just make up your own
xLON/xLAT or yzLN/yzLT as in header construction examples 1 and 4.

Mark Calabretta
ATNF