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: http://xmm.vilspa.esa.es/sas/6.5.0/doc/omichain/node6.html
Дата изменения: Tue Aug 16 08:18:10 2005 Дата индексирования: Sat Dec 22 08:58:53 2007 Кодировка: Поисковые слова: spacecraft |
For each exposure to be processed there are also files:
where rrrr is the 4 digit XMM rev. number, iiiiiiiiii is the 10 digit observation id, eee is the exposure number (e.g. 006 etc.), and ww is the window identifier (00 or 01).
If THX-file are not present, no tracking corrections can be applied but this is often not critical since XMM's tracking appears to be good to around 1 arc-second. If THX files are absent, a dummy file is created by omprep.