FITS header for stamp.10611-1281617180.fits
FITS header for stamp.10611-1281617180.fits
SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 550 / length of data axis 1
NAXIS2 = 646 / 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.
OBJECT = 'unknown ' / Name of object
TELESCOP= 'MOST ' / Telescope used
INSTRUME= ' ' / Instrument/detector used
OBSERVER= ' ' / Astronomical observer
DATE-OBS= ' ' / Date (dd/mm/yy) of observations
BUNIT = 'JY/BEAM ' / Physical units of image
EPOCH = 2.000E+03 / Celestial coordiate equinox
ALTRPIX = 1.000000E+00 / Frequency alternate reference pixel
DATAMAX = 3.445724E+01 / Maximum physical value in image
DATAMIN = -2.346564E+00 / Minimum physical value in image
OBSRA = 0.000000000000E+00 / Observered Right Ascension
OBSDEC = 0.000000000000E+00 / Observered declination
CTYPE1 = 'RA---SIN' / Axis types
CTYPE2 = 'DEC--SIN' /
CDELT1 = -4.166667E-03 / Axis coordinate increments
CDELT2 = 4.166667E-03 /
CRPIX1 = 2.760000E+02 / Axis coordinate reference pixel
CRPIX2 = 3.240000E+02 /
CROTA1 = 0.000000E+00 / Axis coordinate rotation
CROTA2 = 0.000000E+00 /
CRVAL1 = 2.018650624990E+02 / Axis coordinate value at CRPIXn
CRVAL2 = -4.301911258327E+01 /
HISTORY ------------------------------------------------------------------------
HISTORY This image is part of the Sydney University Molonglo Sky Survey (SUMSS).
HISTORY This image is copyrighted:
HISTORY Copyright 1997-2002 School of Physics, The University of Sydney.
HISTORY SUMSS is supported by grants from the Australian Research Council.
HISTORY
HISTORY Permission is granted for publication and reproduction of this
HISTORY material for scholarly, educational, and private non-commerical use.
HISTORY Inquiries for potential commercial uses should be addressed to:
HISTORY
HISTORY Dr. R.W. Hunstead or Dr. E.M. Sadler
HISTORY Astrophysics Department, A29
HISTORY University of Sydney
HISTORY Sydney, NSW 2006
HISTORY Australia
HISTORY
HISTORY email: sumss@physics.usyd.edu.au
HISTORY ------------------------------------------------------------------------
HISTORY About the survey:
HISTORY
HISTORY SUMSS is a deep radio survey of the entire sky south of declination
HISTORY -30 degrees, made using the Molonglo Observatory Synthesis Telescope,
HISTORY operating at 843MHz and recording right-circular polarization.
HISTORY
HISTORY SUMSS matches (approximately) the resolution and depth of the NRAO-VLA
HISTORY Sky Survey (NVSS). The principal data products are images like this one,
HISTORY which cover a 4x4 degree square on the sky. The centres of the mosaics
HISTORY mirror the NVSS centres in the north.
HISTORY The survey began in March 1997 and will take eight years to complete.
HISTORY
HISTORY The primary reference for a description of the survey is:
HISTORY Bock, D., Large, M. and Sadler, E.
HISTORY SUMSS: A Wide-Field Radio Imaging Survey of the Southern Sky.
HISTORY I. Science goals, survey design and instrumentation''
HISTORY Astronomical Journal v117, p1578 (1999).
HISTORY
HISTORY Other descriptive material is available on the SUMSS web site,
HISTORY http://www.astrop.physics.usyd.edu.au/SUMSS.
HISTORY
HISTORY ------------------------------------------------------------------------
HISTORY About this image:
HISTORY
HISTORY This image is a mosaic composed of several individual MOST observations,
HISTORY taken over a wide span in time (sometimes years apart). The observations
HISTORY are overlapped to reduce variations in the noise background arising from
HISTORY the primary beam of the MOST.
HISTORY
HISTORY Each MOST observation is a 12-hour synthesis covering a region of
HISTORY diameter 160 arcmin x 160/sin(dec). These images are combined to
HISTORY produce the mosaic. A summary of the observations that went into this
HISTORY mosaic is given below.
HISTORY
HISTORY The beamshape of the individual images is 43x43/sin(dec), PA=0.
HISTORY Thus, the beamshapes are slightly different for different images. In
HISTORY this mosaic all the sources are convolved to the _same_ beamshape,
HISTORY 45 arcsec by 45/sin(dec), along PA=0, where dec refers to the
HISTORY _centre_ of the _mosaic_. The choice of a slightly larger
HISTORY beamshape for the mosaics is intentional. The correct beam shape
HISTORY parameters for this image are given in the BMAJ/BMIN/BPA header cards.
HISTORY ------------------------------------------------------------------------
HISTORY SUMSS observations for Mosaic J1320M44:
HISTORY Code Start time Start time Time RA Dec
HISTORY (AEST = UT+10) (JD, UT) (h) (J2000) (J2000)
HISTORY I1334451 1999/06/20 13:48:49 2451349.65890 11.25 13:37:30.1 -45:24:23.4
HISTORY I1304421 1998/03/24 19:04:00 2450896.87778 11.95 13:07:30.2 -42:48:36.1
HISTORY I1304451 1998/03/23 19:07:00 2450895.87986 11.81 13:07:29.9 -45:24:24.2
HISTORY I1312411 1998/03/26 19:03:00 2450898.87708 11.90 13:15:00.2 -41:30:36.3
HISTORY I1312461 1998/03/25 19:07:00 2450897.87986 11.96 13:14:59.9 -46:42:36.3
HISTORY I1319451 1998/03/27 19:07:00 2450899.87986 11.97 13:22:30.0 -45:24:24.4
HISTORY I1327411 1998/03/20 19:42:00 2450892.90417 11.96 13:29:59.9 -41:30:35.6
HISTORY I1326461 1998/03/06 20:37:00 2450878.94236 11.95 13:30:00.3 -46:42:35.7
HISTORY I1327431 1998/03/13 20:09:00 2450885.92292 11.97 13:30:00.0 -44:06:35.7
HISTORY I1312431 1998/02/13 21:44:00 2450857.98889 11.85 13:15:00.0 -44:06:36.4
HISTORY I1319421 1998/02/26 21:01:00 2450870.95903 11.91 13:22:30.0 -42:48:36.5
HISTORY ------------------------------------------------------------------------
HISTORY This image is part of 'SUMSS Release 0.2', August 2002.
HISTORY This release replaces ALL earlier SUMSS images (i.e. those
HISTORY from 'Release 0.1', dated between March 2000 and July 2002).
HISTORY These mosaics may be superseded in future by later data releases
HISTORY using more sophisticated processing techniques.
HISTORY
HISTORY The mosaics in Release 0.2 are 4.3 x 4.3 degrees in size,
HISTORY i.e. slightly larger than the 4.0 x 4.0 degrees of the 'Release 0.1'
HISTORY mosiacs. The increased size was needed to give sufficient overlap
HISTORY between mosaics for automatic cataloguing software.
HISTORY
HISTORY A description of the processing for Release 0 mosaics is available
HISTORY on the SUMSS website, http://www.astrop.physics.usyd.edu.au/SUMSS.
HISTORY
HISTORY A catalogue of SUMSS sources from Release 0.2 SUMSS mosaics will
HISTORY be available from September 2002. The initial catalogue covers
HISTORY about 3400 square degrees of sky and contains around 100,000
HISTORY sources to a limiting peak flux density of 6 mJy/beam south of
HISTORY declination -50 degrees and 10 mJy/beam at declinations between
HISTORY -50 and -30 degrees. Image artifacts have been classified using
HISTORY a decision tree, which correctly identifies and rejects spurious
HISTORY sources in over 97 percent of cases.
HISTORY
HISTORY A complete description of the SUMSS catalogue is contained in a
HISTORY paper by T. Mauch, T. Murphy, H.J. Buttery, J. Curran, R.W. Hunstead,
HISTORY B. Piestrzynski and E.M. Sadler, which will be submitted to MNRAS
HISTORY in September 2002. Further sources will be added to the catalogue
HISTORY as the survey proceeds. The catalogue is available online at the
HISTORY SUMSS website: http://www.astrop.physics.usyd.edu.au/SUMSS.
HISTORY ------------------------------------------------------------------------
HISTORY About the image format:
HISTORY
HISTORY The naming scheme for SUMSS mosaics is: JhhmmMdd where
HISTORY J signifies J2000.0 coordinates,
HISTORY hhmm is the RA hours and minutes of the field centre,
HISTORY M signifies southern declination,
HISTORY dd is the Declination degrees of the field centre.
HISTORY
HISTORY The images are stored in FITS format, which is described by:
HISTORY Grosbol et al. 1988, Astronomy & Astrophysics Supplements, v73, p359.
HISTORY
HISTORY When downloading SUMSS images, be sure to use 'binary' transfer mode.
HISTORY
HISTORY Software to view FITS-format files can be obtained from
HISTORY http://www.atnf.csiro.au/karma
HISTORY http://www.cv.nrao.edu/~bcotton/fitsview.html
HISTORY http://heasarc.gsfc.nasa.gov/docs/software/ftools/ftools_menu.html
HISTORY
HISTORY The standard programming library to deal with FITS files is FITSIO,
HISTORY available from
HISTORY http://heasarc.gsfc.nasa.gov/docs/software/fitsio/fitsio.html
HISTORY
HISTORY The mosaics are compressed with GNU zip, or 'gzip', which is
HISTORY available from
HISTORY the Free Software Foundation (http://www.gnu.org/software/gzip.html)
HISTORY and the author of 'gzip',
HISTORY Jean-Loup Gailly (http://www.gzip.org).
HISTORY
HISTORY
HISTORY FITS: Miriad fits: Fits: version 1.1 04-Oct-01
HISTORY FITS: Executed on: 02AUG30:18:04:57.0
HISTORY FITS: Command line inputs follow:
HISTORY FITS: in=/tmp/release_mosaic.bchan.28283/testmir
HISTORY FITS: out=J1320M44.r0.fits
HISTORY FITS: op=xyout
HISTORY FITS: NOTE: Use options=varwt if loading into Miriad
HISTORY postage: Input FITS file =
HISTORY /export/www/astrop/apwww/mosaics/Extragalactic/J1320M44.FITS
DATE = '12/08/10' / FITS file creation date (dd/mm/yy)
ORIGIN = 'postage (NVSS postage stamp)' / FITS file creator