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: http://xmm.vilspa.esa.es/sas/7.1.0/doc/omphotom/node6.html
Дата изменения: Mon Jul 9 06:00:56 2007 Дата индексирования: Sat Dec 22 09:53:24 2007 Кодировка: Поисковые слова: п п р п р п р п р п р п р п р п р п р п р п р п р п р п |
Recomputing the photometry for source no 1 from the source-list file P0123920101OMS006SWSRLI1000.FIT, using the image P0123920101OMS006IMAGE_1000.FIT. The photometry is computed by aperture photometry (phototype=0) with an aperture of 6 image pixels (aperturer=6), an inner background annulus radius of 8 image pixels (innera=8) and an outer background annulus radius of 13 image pixels (outera=13).
Recomputing the photometry for source no 1 from the source-list file P0123920101OMS006SWSRLI1000.FIT, using the image P0123920101OMS006IMAGE_1000.FIT. The photometry is computed by aperture photometry (phototype=1) with an aperture of 6 image pixels (aperturer=6), and using a value for the background counts per pixel of 10 counts.
Recomputing the photometry for sources numbered 1 and 2 from the source-list file P0123920101OMS006SWSRLI1000.FIT, using the image P0123920101OMS006IMAGE_1000.FIT. For both sources the photometry is computed using aperture photometry (phototype=''1, 1'') with apertures of 6 and 8 image pixels (aperturer=''6 8''), inner background annulus radii of 8 and 10 image pixels (innera=''8 10'') and outer background annulus radii of 13 and 16 image pixels (outera=''13 16'').
Recomputing the photometry for source no 1 from the source-list file P0123920101OMS006SWSRLI1000.FIT, using the image P0123920101OMS006IMAGE_1000.FIT. The source is treated as being extended (phototype=-1) and aperture photometry is conducted using an aperture of 6 image pixels (aperturer=6), an inner background annulus radius of 8 image pixels (innera=8) and an outer background annulus radius of 13 image pixels (outera=13), an axial-ratio (semi-major/semi-minor axis) of 5 and a semi-major position angle of (90 degrees).
Recomputing the photometry for sources numbered 1 and 2 from the source-list file P0123920101OMS006SWSRLI1000.FIT, using the image P0123920101OMS006IMAGE_1000.FIT.
Source number 1 is treated as a point-source and the photometry is computed using aperture photometry (phototype=1) with an aperture of 6 image pixels (aperturer=6), an inner background annulus radius of 8 image pixels (innera=8) and an outer background annulus radius of 13 image pixels (outera=13).
Source number 2 is treated as being extended (phototype=-1). Extended photometry is conducted using an elliptical aperture of semi-major axis 6 image pixels (aperturer=6), an axial-ratio (semi-major/semi-minor axis) of 5 and a semi-major position angle of (95 degrees).
The background is subtracted using the pixels within the elliptical annulus with an inner background annulus radius of 8 image pixels (innera=8) and an outer background annulus radius