XMM-Newton Science Analysis System


mssllib (mssllib-2.76.1) [xmmsas_20160201_1833-15.0.0]

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subroutine extendedsourcephotometry4

1. Added on 03.04.09
2. Purpose to perform aperture photometry on extended sources using an exposure and background image.
3. Input parameters
   • exposureConstant The median value of the exposure image that each image pixel has been multiplied by.
   • Image (real 32) The 2-d image to be used for the photometry
   • backgroundImage (real 32) The 2-d background image to be used to subtract the background

   • Exposure image (real 32) The 2-d exposure image to be used for the photometry
   • elevelimage (integer 16) The 2-d image identifying the pixels assigned to each extended source
4. Input/output variables
   • source - On input structure contains the source coordinates and various other parameters computed by omdetect. On output it will have its photometric raw count-rate components set.