SIMPLE  =                    T / file does conform to FITS standard
BITPIX  =                    8 /
NAXIS   =                    0 / no primary array
EXTEND  =                    T / FITS dataset may contain extensions
COMMENT   FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
FILENAME= 'hpolret_a0535+26_19940331_hw.fits' / FITS file name
DATE    = '2005-07-12T14:26:38' / FITS file creation date
DATE_OBS= '1994-03-31'         / UT Date of Observation ccyy-mm-dd
MJD_OBS =             49442.06 / [days] MJD at start of obs (JD-2,400,000.05)
TIME_OBS=               1.3556 / [hours] UT time at start of obs
OBSERVAT= 'PBO     '           / Pine Bluff Observatory
TELESCOP= '36-inch '           / Telescope
INSTRUME= 'SPECTROPOLARIMETER' / Instrument Used
MODE    = 'HPOL    '           / Halfwave Polarimeter Mode
DETECTOR= 'Reticon '           / Detector
OBJECT  = 'A0535+26'           / Object Observed
NAME2   = 'HD245770'           / Alternate Object Name
ID      = '3818    '           / WUPPE ID number for Object
TYPE    = 'XRTr    '           / Type of Object
SPTYPE  = 'BO5e    '           / Spectral Type
VMAG    =                  9.4 / V magnitude
EQUINOX =               2000.0 / Equinox for coordinates
RA      = '0538545 '           / Right Ascension in hhmmsss
DEC     = '+261857 '           / Declination in sddmmss
EXPOSURE=              4915.00 / Useful Exposure Time (seconds)
HVPS    =                 4.30 / High Voltage Power Supply (volts)
THERM   =               -36.40 / Detector temperature (Centigrade)
POSANGLE=                90.00 / Observatory Position Angle (Degrees)
SLIT    =                    4 / Slit Number of Entrance Aperture
DECKER  =                    6 / Decker Number of Entrance Aperture
COMMENT Note: The most commonly used slit/decker combination
COMMENT is  slit=4, decker=6 (12" x 12").
COMMENT Slit Widths for this HPOL system are:
COMMENT 1: 1.5", 2: 3.0", 3: 6.0", 4: 12.0", 5: 50.0", 0: unknown
COMMENT The decker controls the length of the slit being used.
COMMENT Deckers for this HPOL system are:
COMMENT 1: Occulting 25" with central 6" obscured
COMMENT 2: Occulting 50" with central 12" obscured
COMMENT 3: 1.5", 4: 3.0", 5: 6.0", 6: 12.0", 7: 25.0"
COMMENT 8: 50.0", 9: 100.0", 0: unknown
OBSERVER= 'pbm     '           / Observer of the Data
REDUCER = 'nez     '           / Reducer of the Data
DATASTAT= 'DG      '           / Data Status (DG=Degraded)
REDCOMME= '        '           / Data reduction comments
COMMENT Useful data generally are from 3180A-7700A with a spectral
COMMENT resolution of 25A.
COMMENT HPOL reticon flux calibration has a relative flux accuracy
COMMENT of 0.05 magnitudes for the 12"/12" slit/decker combination.
COMMENT Fluxes are not absolute due to non-photometric skies.
END