Latest Fits Header

[Tom Droege <tdroege@veriomail.com>]

OK, here we go again.  I appreciate everyone sticking with this until we 
get it done.  I was not able to group everything in the most desirable 
way.  This is due to the fits header being assembled in pieces depending on 
which camera is being read out.  The same holds for the comment lines.  The 
first call to CFITSIO puts in the advertisement, so the later lines have 
additional comments from their sections.  BZERO and BSCALE are just not 
accepted the way we are doing it.  Possibly Rob can get in touch with a 
cfitsio expert and find out why.

OK, I hope there is a term here for everyone.  What I really hope is that 
there is enough to describe the situation so that the images can be 
processed now and in the future. Thanks to everyone for their input.  If I 
seem to have ignored input from one of you, that was not my intent.  I plan 
to reverse the order of CRVAL1 and CRVAL2.  There is also the hour 
difference between DATE and DATE-OBS to be fixed.

Tom Droege



SIMPLE  =                    T / file does conform to FITS 
standard
BITPIX  =                   16 / number of bits per data 
pixel
NAXIS   =                    2 / number of data 
axes
NAXIS1  =                 2043 / length of data axis 
1
NAXIS2  =                 2037 / length of data axis 
2
EXTEND  =                    T / FITS dataset may contain 
extensions
COMMENT   FITS (Flexible Image Transport System) format defined in 
Astronomy and
COMMENT   Astrophysics Supplement Series v44/p363, v44/p371, v73/p359, 
v73/p365.
COMMENT   Contact the NASA Science Office of Standards and Technology for 
the
COMMENT   FITS Definition document #100 and other FITS 
information.
DATE    = '2001-04-10T20:49:45' / file creation date (YYYY-MM-DDThh:mm:ss 
UTC)
FILTER  = 
'I       '
LATITUDE=              41.8271 / Site H latitude, degrees 
north
LONGITUD=             -88.3125 / Site H longitude, degrees 
east
RALIM   =                 -9.5 / RA Limit Switch Position Degrees 
East
DECLIM  =                   0. / Declination limit switch Degrees 
North
DATASEC = '[ 17:2064, 1:2048]' / Place keeper for Active area of the 
detector
BIASSEC = '[ 10:15, 1:2048]'   / Place keeper for Under-Over scan 
region
TIMESYS = 'UT      '           / time system for exposure 
start
EPOCH   =                2001. / Place keeper for Epoch of 
coordinates
EQUINOX =                2000. / Place keeper for Equinox of 
coordinates
SCALE   =                  7.4 / Arc seconds per 
pixel
TIMEBASE= 'Manual GPS'         / By hand transfer to PC 
clock
COMMENT   Additions to Constant 
File
RA      = '4: 3:2.39'          / RA of Field 
Center
RATIME  = '1.921875'           / Seconds since turning on RA 
drive
IMAGETYP= 'object  '           / object 
frame
WATERTMP= '18.04614'           / Cooling water 
temperature
VCOTEMP = '28.42211'           / VCO 
Temperature
DEC     = '0:00:00 '           / Place Keeper for DEC of field 
center
CRVAL2  =     4.06177589737783 / RA of Field 
Center
CRVAL1  =                   0. / Place Keeper for DEC of field 
center
CTYPE1  = 
'DEC--TAN'
CTYPE2  = 
'RA---TAN'
CRPIX1  =                1016. 

CD1_1   =             0.002126 

CRPIX2  =                1015. 

CD2_2   =            -0.002126 

CDELT1  =             0.002126 

CDELT2  =            -0.002126 

CROTA1  =                   0. 

CROTA2  =                   0. 

UT      = '21:49:33'           / Universal time of #0 exposure (V) 
start
COMMENT   This is the #1 Camera 
File
DATE-OBS= '2001-04-10T21:49:42' / UT date-time of exposure 
start
UTSTART = '21:49:42'           / Universal time of #1 exposure (I) 
start
EXPTIME =             99.74219 / Open Time for Camera 1 usually 
I
GAIN    =                  2.5 / Place Keeper for Gain in electrons per 
adu
RDNOISE =                  25. / Place Keeper for Read Noise in 
electrons
CCDTEMP = '-20.61963'          / CCD Temperature Camera 
1
END