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From: Adrian Turner <akt21@ast.cam.ac.uk>
Subject: final image in omichain
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Private message: yes  no

Notes:

Notification:


Date: Wed, 12 Nov 2003 11:02:37 +0000
From: Adrian Turner <akt21@ast.cam.ac.uk>
To: xmmhelp <xmmhelp@xmm.vilspa.esa.es>
Subject: final image in omichain
Dear Helpdesk,

Can photometry be done on the final image produced by omatt (ie the one 
that is in sky coordinates)?  Has this been corrected for coincidence 
loss and deadtime?

Many thanks,

Adrian


Reply 1

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From: Pedro M. Rodriguez Pascual <xmmhelp@xmm.vilspa.esa.es>
To: akt21@ast.cam.ac.uk
Subject: Re: final image in omichain (PR#9498)
Date: Wed Nov 12 11:15:53 2003
Dear Adrian, 

Unfortunately, the answer to both questions is no. Photometry can only be done
on intermediate OSW images and the corrections for coincidence loss and deadtime
are applied to the aperture integrated count rates, not on individual pixels.

Sorry, 

Pedro

> Dear Helpdesk,
> 
> Can photometry be done on the final image produced by omatt (ie the one 
> that is in sky coordinates)?  Has this been corrected for coincidence 
> loss and deadtime?
> 
> Many thanks,
> 
> Adrian
> 
> 

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