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From: akong@cfa.harvard.edu
Subject: PSF of MOS
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Date: Thu, 31 Jul 2003 19:56:34 GMT
From: akong@cfa.harvard.edu
To: xmmhelp@xmm.vilspa.esa.es
CC: akong@cfa.harvard.edu
Subject: PSF of MOS
Full_Name: Albert Kong
Submission from: (NULL) (131.142.24.30)


Hi,

I was wondering how I can create an EPIC PSF for a point source (near
aim-point)
with SAS. Any suggestion would be helpful. Thanks.

Albert


Reply 1

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From: Matthias Ehle <xmmhelp@xmm.vilspa.esa.es>
To: akong@cfa.harvard.edu
Subject: Re: PSF of MOS (PR#8874)
Date: Fri Aug  1 07:00:32 2003
Dear Albert,

I am not quite sure what you mean by saying that you wish to 
"create an EPIC PSF" but I assume that you want to know the
characteristics of the PSF:

If so, please, check helpdesk question 5944 in the Calibration 
folder. There you will find info on how the PSF is described
by a King function.

Please, do not hesitate to contact us again if further info
is needed.

Cheers,
Matthias.

Matthias Ehle 
XMM-Newton SOC 
User Support Group


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From: "Albert Kong" <akong@cfa.harvard.edu>
To: "'Matthias Ehle'" <xmmhelp@xmm.vilspa.esa.es>
Subject: RE: PSF of MOS (PR#8874)
Date: Fri, 1 Aug 2003 11:06:39 -0400
Hi Matthias,

I actually would like to generate a PSF image and then compare with my
sources. There's a tools in Chandra's CIAO to accomplish this but I
couldn't find a similar task in SAS.

Albert

-----Original Message-----
From: Matthias Ehle [mailto:xmmhelp@xmm.vilspa.esa.es] 
Sent: Friday, August 01, 2003 3:01 AM
To: akong@cfa.harvard.edu
Subject: Re: PSF of MOS (PR#8874)

Dear Albert,

I am not quite sure what you mean by saying that you wish to 
"create an EPIC PSF" but I assume that you want to know the
characteristics of the PSF:

If so, please, check helpdesk question 5944 in the Calibration 
folder. There you will find info on how the PSF is described
by a King function.

Please, do not hesitate to contact us again if further info
is needed.

Cheers,
Matthias.

Matthias Ehle 
XMM-Newton SOC 
User Support Group



Reply 2

Resend
From: Matthias Ehle <xmmhelp@xmm.vilspa.esa.es>
To: akong@cfa.harvard.edu
Subject: Re: PSF of MOS (PR#8874)
Date: Mon Aug  4 08:48:26 2003
Hi Albert,

you wrote;
> I actually would like to generate a PSF image and then compare with my
> sources. There's a tools in Chandra's CIAO to accomplish this but I
> couldn't find a similar task in SAS.

In SAS the task calview allows you to create PSF images (view -> PSF) 
that will be displayed in ds9 from which they can be stored as FITS images.
If you choose as accuracy level 'EXTENDED' you will get synthetic images
based on the best fit model (king).

Cheers,
Matthias

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