--- header unit 0: primary ---
SIMPLE = T / file does conform to FITS standard
BITPIX = 16 / number of bits per data pixel
NAXIS = 3 / number of data axes
NAXIS1 = 893 / length of data axis 1
NAXIS2 = 361 / length of data axis 2
NAXIS3 = 1 / length of data axis 3
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
CTYPE1 = 'VELO-LSR' / axis type
CRVAL1 = 0.000000000000E+00 / velocity
CRPIX1 = 446 / ref pixel
CDELT1 = 1.030571969000E+03 / velocity increment
CROTA1 = 0.000000000000E+00 / velocity rotation
CUNIT1 = 'M/S' / unit type
CTYPE2 = 'GLAT-CAR' / axis type
CRVAL2 = -9.000000000000E+01 / latitude
CRPIX2 = 1 / ref pixel
CDELT2 = 5.000000000000E-01 / longitude increment
CROTA2 = 0.000000000000E+00 / latitude rotation
CUNIT2 = 'DEG' / unit type
CTYPE3 = 'GLON-CAR' / axis type
CRVAL3 = 1.490000022203E+02 / longitude
CRPIX3 = 1
CDELT3 = 0.000000000000E+00
CROTA3 = 0.000000000000E+00
CUNIT3 = 'DEG' / unit type
BUNIT = 'K' / map units
OBSTYP = 'LINE' / type of observation
FREQ0 = 1.420405752000E+09 / rest frequency in Hz
RESTFREQ = 1.420405752000E+09 / rest frequency in Hz
DATAMIN = -5.175000000000E-01 / map minimum
COMMENT absorption features truncated at -10.0 K
DATAMAX = 1.194725000000E+02 / map maximum
BZERO = 7.000000000000E+01
BSCALE = 2.500000000000E-03
BLANK = -32768 / blank value
COMMENT -------------------------------------------------------------
OBJECT = 'Leiden/Argentine/Bonn Galactic HI Survey; (b,v) at l=149.0'
COMMENT -------------------------------------------------------------
TELESCOP = 'Dwingeloo - Villa Elisa' / telescopes
COMMENT The Dwingeloo 25-m telescope was used for DEC > -27 deg,
COMMENT the Villa Elisa 30-m telescope for DEC < -25 deg.
COMMENT The beam FWHM for the 25-m telescope is 35.7 arcmin,
COMMENT the beam FWHM for the 30-m telescope is 30.0 arcmin.
COMMENT Regridding was by Gaussian interpolation (18 arcmin),
COMMENT leading to the following effective resolution (FWHM):
COMMENT 40 arcmin for DEC > -27 deg, 35 arcmin for DEC < -25 deg
COMMENT 37.5 arcmin for -27 < DEC < -25 deg (overlap)
COMMENT Note: the grid of 30 arcmin violates Nyquist sampling
DATE = '2004-12-09' / final data release
REFERENC = 'Kalberla et al. (2005) A&A 440, 775' / see also below
COMMENT The reference to Kalberla, P.M.W., Burton, W.B., Hartmann,
COMMENT Dap, Arnal, E.M., Bajaja, E., Morras, R., and P\"oppel, W.G.L.
COMMENT (2005) A&A 440, 775 describes the merger of the
COMMENT northern (dec > -27) HI survey of Hartmann & Burton (1997)
COMMENT made with the Dwingeloo 25-meter telescope with the
COMMENT southern (dec < -25) survey of Bajaja et al. (2005)
COMMENT made with the IAR 30-meter telescope, as well as refined
COMMENT corrections for stray radiation possible because of the
COMMENT availability of the all-sky coverage.
COMMENT Depending on the region of the sky being studied, please
COMMENT cite, in addition to the Kalberla et al. (2005) reference,
COMMENT also the appropriate source of the material used, namely
COMMENT Hartmann & Burton (1997, Cambridge University Press, ISBN 0521471117)
COMMENT and/or Arnal et al. (2000), A&AS, 142, 35,
COMMENT Bajaja et al. (2005, A&A 440, 767)
COMMENT Observers were Dap Hartmann and W.B. Burton (Leiden University),
COMMENT for the Dwingeloo telescope, and E.M. Arnal, E. Bajaja, J.J.
COMMENT Larrarte, R. Morras, & W.G.L. Poeppel (Argentine Institute for
COMMENT Radio Astronomy), for the Villa Elisa telescope.
COMMENT Correction for stray radiation and combination of the data
COMMENT by P.M.W. Kalberla (Bonn University).