STC V1.21 posted as PR

[Alberto Micol]

Thanks Arnold!

A question about the position angle (as you said, it is source of  
confusion:-) ):
By saying "North" does that mean that the pos angle is the angle
that goes from North to the "Y" axis of the detector (projected onto
the sky going through East) or to the "X" axis?
I vote for the first one, in which case pos_angle = 0 means North == Y.
Just to make sure...

Thanks,

Alberto

On Mar 18, 2005, at 14:50, Arnold Rots wrote:

> (with apologies if you get multiple copies of this message)
>
> On the Ides of March, version 1.21 of STC has been posted as a
> Proposed Recommendation.  It refers to two implementations that have
> been published as notes: STC-X and STC-S.
> ...
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> Arnold H. Rots                                Chandra X-ray Science  
> Center
> Smithsonian Astrophysical Observatory                tel:  +1 617 496  
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> Cambridge, MA 02138                              
> arots at head.cfa.harvard.edu
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>
Alberto Micol
ST-ECF HST Archive Scientist