How can I calculate upper limits at a given source position?
Generally you can download a given image from the archive and use ROSAT
data reduction software (PROS, EXSAS or XSELECT).
Probably the quickest way to determine upper limits is to use the "
SOSTA" (source statistics) tool available in the XIMAGE
image processing package. Users can access ROSAT data for any position by using BROWSE.
Page Author: Michael F. Corcoran
Last modified April 28, 1999
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