Re: asol vs osol

From: Herman L. Marshall (hermanm@space.mit.edu)
Date: Wed Nov 07 2001 - 15:07:32 EST


Tahir,

As noted by others, these files are not equivalent. The difference was
not mentioned, however. As far as I know, the asol files are the result
of ground-based aspect analysis using all PCAD data. The osol files
are based on aspect determined by the on-board computer. Ground
processing gives a better product because more information is
available. If you want a more thorough delination of the differences,
you might want to contact Tom Aldcroft, who is the PCAD system
expert.

Herman

> From belinda@head-cfa.harvard.edu Wed Nov 7 13:10:22 2001
> Date: Wed, 7 Nov 2001 13:08:36 -0500 (EST)
> From: Tahir Yaqoob <yaqoob@tarkus.pha.jhu.edu>
> To: <chandra-users@head-cfa.harvard.edu>
> Subject: asol vs osol
> MIME-Version: 1.0
>
>
> Hi
> For a particular observation I don't have any pcad*asol*
> files under secondary/aspect but instead a bunch of
> pcad*osol* files. Anyone know whether these are equivalent?
>
> Thanks
> Tahir
>
>



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