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Дата индексирования: Mon Oct 1 23:29:50 2012
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pi pulse invariant bin (energy). Accepted values 0-15
(Einstein IPC), 1-256 (ROSAT PSPC) and 1-34 (ROSAT PSPC, SASS output).
region a selected region of the image of various
forms. Used to select only a portion of the image, within which the
current operations should be applied.
time photon arrival time in sec.
from Jan. 0, 1978, for Einstein data
Spacecraft clock time (can be converted to UT) from 21:06:50.2
June 1, 1990 for ROSAT data
x - y pixel position in sky pixel (i.e., after aspect
correction). Values start from 1 in the lower left corner