Документ взят из кэша поисковой машины. Адрес оригинального документа : http://xmm.vilspa.esa.es/sas/7.1.0/doc/ommodmap/node5.html
Дата изменения: Mon Jul 9 06:06:00 2007
Дата индексирования: Sat Dec 22 09:53:06 2007
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XMM-Newton Science Analysis System


ommodmap (ommodmap-2.15.4) [xmmsas_20070708_1801-7.1.0]

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Creating the mod-8 map

A box of size nbox is first stepped across the image and within the box a sigma clipping algorithm is used to mask out sources and any surrounding pixels affected by coincidence loss. Then the average of all remaining mod-8 tiles within a sliding box of size nbox is computed and used to produce the mod-8 map.