XMM-Newton SAS: Watchout Page

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Дата индексирования: Sat Dec 22 14:29:56 2007
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XMM-Newton SAS: Watchout Page RGS spectrum of HR1099

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The circular annulus region in `ds9`: `annulus(x,y,rinner,router)` gets imported by `xmmselect` as `annulus(x,y,0,rinner)`. What is wrong?

In ds9 version 2.1b4 there has been a subtle change in the so-called region file format, that leads to the above problem. It was fixed transparently in SAS v5.3. If you are using an earlier version, the following workaround is recommended:

In ds9, select Edit --> Preferences --> Region Menu --> Annulus
In the coming up dialog window change:
- Radius inner from 0 to 10
- Annuli from 2 to 1
OKay this change
Select: Edit --> Preferences --> Save Preferences

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Any question about SAS should be addressed to the XMM-Newton help desk.
Updated on: November 18, 2006

The circular annulus region in ds9: annulus(x,y,rinner,router) gets imported by xmmselect as annulus(x,y,0,rinner). What is wrong?

The circular annulus region in `ds9`: `annulus(x,y,rinner,router)` gets imported by `xmmselect` as `annulus(x,y,0,rinner)`. What is wrong?