Description of keyword OBJECT in
"Pi Of The Sky" FITS header
1. Value of OBJECT keyword is build in the following way :
XHHMM+DDMM
Where letters mean :
- X
- identifies type of observed field , it can have the following values :
H - means
HETE Field Of View ( FOV ) was
observed
I - Integral
FOV
S -
Swift FOV
L -
Large Magellanic Cloud
U -
unknown
C -
corrected , due to on-line problems it was wrong and was
corrected off-line by script ....
- HHMM - right ascension of
observed field - hours and minutes
- +DDMM - declination of observed
field - in degrees and arcmin , always with sign
2. For precessed frames the following
values are possible :
- FLAT - for flat frame
- DARK - for dark frame
- BIAS - for bias frame (
dark with 0 exposure time )