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From: Luigi Foschini <foschini@bo.iasf.cnr.it>
Subject: Question about OM Pipeproducts
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Date: Mon, 22 Jul 2002 10:37:38 +0200 (CEST)
From: Luigi Foschini <foschini@bo.iasf.cnr.it>
To: xmmhelp@xmm.vilspa.esa.es
Subject: Question about OM Pipeproducts
Hello,
I am looking at OM data (both from pipeprod and locally processed odf) for 
the first time and I have encountered a strange case where the UV image 
has the main emission a little far from the centre of the galaxy (centre 
perfectly matched with MOS2 data). I would like to know if there are any 
known problems with WCS in the Optical Monitor or the WCS system in the OM 
is working well.

Thank you in advance for your help.
Greetings,

Luigi Foschini


-- 
 Dr. Luigi Foschini
 Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF) - CNR 
 Sezione di Bologna (formerly iTeSRE - CNR)
 Via Gobetti 101, I-40129 Bologna (Italy)
 Tel. +39 051.6398709               Fax  +39 051.6398724
 Email: foschini@bo.iasf.cnr.it  <<<<== NEW EMAIL !!!!
 URL: http://tonno.tesre.bo.cnr.it/~foschini/



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From: Maria Santos-Lleo <xmmhelp@xmm.vilspa.esa.es>
To: foschini@bo.iasf.cnr.it
Subject: Re: Question about OM Pipeproducts (PR#5587)
Date: Mon Jul 22 10:37:16 2002
Dear Luigi, 

The astrometric accuracy of SAS 5.3 processed OM data is 1-2 arcsec rms.
The main source of error is the geometric distortion of the OM detector.
The accuracy will improve with the new distortion map which will be
ready soon.

With best regards

Maria Santos-Lleo, 
XMM-Newton SOC 
User Support Group


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Date: Mon, 22 Jul 2002 12:57:18 +0200 (CEST)
From: Luigi Foschini <foschini@bo.iasf.cnr.it>
To: Maria Santos-Lleo <xmmhelp@xmm.vilspa.esa.es>
Subject: Re: Question about OM Pipeproducts (PR#5587)
Dear Maria,

Thank you very much for your help.

Greetings,

Luigi



-- 
 Dr. Luigi Foschini
 Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF) - CNR 
 Sezione di Bologna (formerly iTeSRE - CNR)
 Via Gobetti 101, I-40129 Bologna (Italy)
 Tel. +39 051.6398709               Fax  +39 051.6398724
 Email: foschini@bo.iasf.cnr.it  <<<<== NEW EMAIL !!!!
 URL: http://tonno.tesre.bo.cnr.it/~foschini/


On Mon, 22 Jul 2002, Maria Santos-Lleo wrote:

> Dear Luigi, 
> 
> The astrometric accuracy of SAS 5.3 processed OM data is 1-2 arcsec rms.
> The main source of error is the geometric distortion of the OM detector.
> The accuracy will improve with the new distortion map which will be
> ready soon.
> 
> With best regards
> 
> Maria Santos-Lleo, 
> XMM-Newton SOC 
> User Support Group
> 


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