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From: tsuau@irap.omp.eu
Subject: Source finding in overlapping exposures from different observations ?
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Date: Thu, 30 Mar 2017 14:43:11 GMT
From: tsuau@irap.omp.eu
To: xmmhelp@sciops.esa.int
CC: tsuau@irap.omp.eu
Subject: Source finding in overlapping exposures from different observations ?
Full_Name: Suau Teddy
Submission from: (NULL) (194.199.146.45)


Hello,

I'm totally new in SAS (SAS16) and while i was trying to obtain the "deepest"
possible field by overlapping several exposures from different observations of
the same area, i was wondering if it could be possible to launch a source
detection in the case of such an image. I saw in the SAS thread that it is
possible in the case of an observation in mosaic mode, but it seems to only
works with overlapping exposures of the same observation, as i have no choice
but to create an ODF summary for all exposures which, it seems, is not possible
with exposures coming from  different observations. (An "error message" appears
when i'm trying to do so)

I hope my request is enough clear.

Regards, Suau Teddy.


Reply 1

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From: Rosario Gonzalez Riestra <xmmhelp@sciops.esa.int>
To: tsuau@irap.omp.eu
Subject: Re: Source finding in overlapping exposures from different observations ? (PR#81319)
Date: Thu Mar 30 14:54:02 2017
Dear Suau Teddy,

Source detection in overlapping fields not belonging to the same observation is
indeed possible, as explained in the thread

https://www.cosmos.esa.int/web/xmm-newton/sas-thread-src-find-overlap-stepbystep

" ... the procedure described here can be applied for the case where different
independent observations overlap"


Regards

Rosario Gonzalez-Riestra 
XMM-SOC User Support Group

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