--- header unit 0: primary ---
SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 1024 / length of data axis 1
NAXIS2 = 3 / length of data axis 2
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
BSCALE = 1. / True_value = BSCALE * FITS_value + BZERO
BZERO = 0. / True_value = BSCALE * FITS_value + BZERO
DATE = '2004-08-25T00:08:24' / file creation date (YYYY-MM-DDThh:mm:ss UT)
EXTNAME = 'SPECTRUM' / Name of image extension
EXTVER = 1 / Extension identifier
ORIGIN = 'MGCz' / Source of the data
OBJECT = 'MGC31878' / Object name
OBSERVAT = 'SSO' / Name of observatory
LATITUDE = -31.27704 / Telescope latitude in deg
LONGITUD = 149.0661 / Telescope longitude in deg
HEIGHT = 1164. / Telescope height above sea level in m
TELESCOP = 'AAT' / 3.9m Anglo-Australian Telescope
INSTRUME = '2dF' / 2 Degree Field multi-fibre spectrograph
SPECTID = 'B' / 2dF spectrograph ID
GRATID = '300B' / 2dF grating ID
PLATE = 1 / 2dF plate number
RDNOISE = 5.2 / Readout noise in e-
GAIN = 2.79 / Readout gain in e-/ADU
DATE-OBS = '2003-03-31' / UT date of start of observation
UT = '14:38:10.43' / UT of start of observation
LST = '13:08:40' / Local sidereal time at start of observation
HA = 11.47635 / HA at start of observation in deg
ALT = 56.90533 / Altitude at start of observation in deg
EXPTIME = 1200. / Exposure time in s
NCOMBINE = 3 / Number of exposures combined
CTYPE1 = 'Wavelength' / Type of coordinate on axis 1
CUNIT1 = 'Angstrom' / Units for axis 1
CRPIX1 = 512. / WCS reference point
CRVAL1 = 5814.729 / WCS reference value
CD1_1 = 4.310303 / WCS transformation matrix element
CD1_2 = 0. / WCS transformation matrix element
CD2_1 = 0. / WCS transformation matrix element
CD2_2 = 1. / WCS transformation matrix element
ROW1 = 'Spectrum' / Identifier
ROW2 = 'Sigma' / Identifier
ROW3 = 'Sky' / Identifier
FIBRE = 95 / Fibre number
PIVOT = 204 / Pivot number
RA_FIB = 184.73588 / Fibre right ascension in deg (J2000)
DEC_FIB = 0.03275 / Fibre declination in deg (J2000)
X = 5585 / Fibre button x position on plate
Y = -218300 / Fibre button y position on plate
THETA = 182.87 / Fibre angle in deg
THPUT = 1.6346 / Fibre throughput
Z = 0.11983 / Measured redshift
Z_HELIO = 0.11982 / Heliocentric redshift
Z_QUAL = 4 / Redshift quality
BEST_Z = T / Best redshift flag
SN = 4.53 / Median S/N per pixel in 4000-6000 A band
ABEMMA = 3 / 0-3 = abs+em, abs, em or manual redshift
RA = 184.73588 / Fibre right ascension in deg (J2000)
DEC = 0.03275 / Fibre declination in deg (J2000)
WMIN = 3612.164 / Minimum wavelength in A
WMAX = 8021.604 / Maximum wavelength in A