[OBSERVATION] Space-Time Coordinates - new descriptions (my version)

[Arnold Rots]

It took me a bit longer, but the STC draft document is finished, at
last.
See:

	http://hea-www.cfa.harvard.edu/~arots/nvometa/STC.pdf

The UML diagram is included but can be found by itself at:

	http://hea-www.cfa.harvard.edu/~arots/nvometa/STC_UML.pdf


  - Arnold


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Date: Sat, 10 Apr 2004 21:00:19 -0400 (EDT)
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Subject: [OBSERVATION] Space-Time Coordinates - new descriptions
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Dear Observation group,
 Because there's been some confusion about the STC model,
both Arnold and I have tried to write up clearer descriptions
of the model. In my version, which I have placed at
 http://hea-www.harvard.edu/~jcm/vo/docs/stc-jcm.v1.pdf
and also on the IVOA DM twiki, I have tried to put it
in the context of Observation Characterization and also included
my own questions and suggestions for changing the STC model.
Arnold will send around his document soon (Hi, Arnold!).

I'm leaving on a trip and will be out of email contact till
April 19. When I return, I will try to begin organizing our
plans for the May Interop meeting, by which time we must have
completed our Observation model. I suggest that incorporating
the STC model in our Characterization scheme will get us
significantly closer to this goal.

I've also been working on the Mappings part of the Quantity
model, and hope a document will be circulated in the next
few days on that subject.

 - Jonathan

----- End of forwarded message from Jonathan McDowell -----
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Arnold H. Rots                                Chandra X-ray Science Center
Smithsonian Astrophysical Observatory                tel:  +1 617 496 7701
60 Garden Street, MS 67                              fax:  +1 617 495 7356
Cambridge, MA 02138                             arots at head.cfa.harvard.edu
USA                                     http://hea-www.harvard.edu/~arots/
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