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ROSAT Guest Observer Facility

When should I care about the background?

(11/10/92)


The background should be taken into account for all sources, but most especially for soft sources and diffuse sources. The exposure and vignetting corrections are energy-dependent, so extended/diffuse sources will be most affected. The detector artifacts (window support structure, for example) are energy-dependent, so they will hit the data in different ways. If your sources are photon-limited, then the analysis will depend upon how you treat the background.


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This file was last modified on Friday, 27-Jul-2001 14:59:31 EDT

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