Up to top level
AO15   AO16   AO17   AO18   AO19   Backgrounds   Calibration   Conference   Data   Docs   EPICMOS   EPICpn   Feedback   Gallery   Misc   OM   Pending   PhD_Theses   Publications   RGS   RadMonitor   SAS_Hardware   SAS_WS   SASv16.0   SASv16.0_Installation   SASv16.1   SASv16.1_Installation   SASv17.0   SASv17.0_Installation   SASv18.0   SASv18.0_Installation   SciSim   Simulators_other   Suggestions   Trash   Visibility   XMM-bouncing   XMM-news   XRPS   XSA   esas   incoming  

Logged in as guest

Viewing Backgrounds/15764
Full headers

From: spchao@physics.rutgers.edu
Subject: How to make a mosaic of the nonvignetted background (NVB) maps?
Compose reply
Download message
Move To:
1 replies: 1
0 followups:

Private message: yes  no

Notes:

Notification:


Date: Fri, 6 Aug 2004 14:37:48 GMT
From: spchao@physics.rutgers.edu
To: xmmhelp@xmm.vilspa.esa.es
CC: spchao@physics.rutgers.edu
Subject: How to make a mosaic of the nonvignetted background (NVB) maps?
Full_Name: Chao, sung-po
Submission from: (NULL) (165.230.152.70)



 Dear XMM help,

   As I followed the steps in 
   http://xmm.vilspa.esa.es/sas/current/doc/asmooth/node16.html
   to produce simply-smoothed mosaic I had problem in making mosaic of the NVB
   maps. If I bypassed the 3rd and 4th steps I got a hollow centered image as
you
   described in the document. Please tell me how to make NVB maps. Thank you!

                                                               sincerely,
                                                                    sung po   
  


Reply 1

Resend
From: Matteo Guainazzi <xmmhelp@xmm.vilspa.esa.es>
To: spchao@physics.rutgers.edu
Subject: Re: How to make a mosaic of the nonvignetted background (NVB) maps? (PR#15764)
Date: Wed Aug 18 14:59:11 2004
Dear Dr. Sung,

 as the "asmooth" documentation correctly states, there is no standard recipe to
calculate the fraction of "internal" background not affected by vignetting. For
a proper definition of this, please have a look at the following paper:
http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003A%26A...409..395R&db_key=AST&link_type=ABSTRACT&high=40a3acb56f25399.

 The best way to proceed is using observations, where the EPIC cameras were used
with the "CLOSED" filter. You can get a list of these observation by setting the
parameters: "Non Science Modes/Filters=Yes", "Mode Synchronization=No", and -
for instance - "MOS1 Filter=CLOSED" in the "Exposure" panel of the XMM-Newton
Science Archive user interface.

 Regards,

 Matteo Guainazzi
 XMM-Newton Science Operations Center
 User Support Group

Up to top level
AO15   AO16   AO17   AO18   AO19   Backgrounds   Calibration   Conference   Data   Docs   EPICMOS   EPICpn   Feedback   Gallery   Misc   OM   Pending   PhD_Theses   Publications   RGS   RadMonitor   SAS_Hardware   SAS_WS   SASv16.0   SASv16.0_Installation   SASv16.1   SASv16.1_Installation   SASv17.0   SASv17.0_Installation   SASv18.0   SASv18.0_Installation   SciSim   Simulators_other   Suggestions   Trash   Visibility   XMM-bouncing   XMM-news   XRPS   XSA   esas   incoming  

Logged in as guest


Please make your (short) question the subject of your request!


Web interface using JitterBug ... back to the XMM home page