Hello everyone,
For a combined data observed during two different period (ACIS for
each observations faces different direction, but the object was placed at
the same exact position on the S3 chip), how can I combine or treat
each file containing the aspect offsets? (e.g. in case of computing
Exposure map).
In this case, I could not obtain proper backgound_lc.fits file
in 'Eliminating High Background Times' thread.
Anyone has idea about this??
Thanks in advance ...
Yun
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