/ftp/cats/viii/7A



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VIII/7A     Hat Creek High-Latitude H I Survey     (Heiles+ 1974-1976)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
	catalog.dat fits.dat
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Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=VIII/7A
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drwxr-xr-x 103 cats archive 4096 Sep 6 17:04 [Up] drwxr-xr-x 3 cats archive 4096 Feb 27 2014 [TAR file] -rw-r--r-- 1 cats archive 463 Nov 13 2012 .message -r--r--r-- 1 cats archive 10236 Nov 29 2003 ReadMe -rw-r--r-- 1 cats archive 2625 Nov 13 2012 +footg5.gif -rw-r--r-- 1 cats archive 39788 Nov 13 2012 +footg8.gif -r--r--r-- 1 cats archive 19006831 Nov 27 2003 catalog.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] drwxr-xr-x 2 cats archive 40960 Feb 27 2014 fits -r--r--r-- 1 cats archive 24717 Nov 27 2003 fits.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 278949 Aug 15 1997 lbmap.fit.gz [Uncompressed] -r--r--r-- 5 cats archive 37179 Nov 12 1992 software.for
Beginning of ReadMe : VIII/7A Hat Creek High-Latitude H I Survey (Heiles+ 1974-1976) ================================================================================ The Hat Creek High-Latitude H I Survey Heiles C. and Habing H.J. <Astron. & Astrophys. Suppl., 14, 1 (1974)> =1974A&AS...14....1H ================================================================================ ADC_Keywords: Radio sources ; Surveys ; H I data Description: This survey consists of H I 21-cm spectra covering the entire northern sky with absolute Galactic latitude |b|>10 degrees and declination dec>-30degrees. The observations were made with the Hat Creek 85-foot telescope between 1968 and 1970. The individual spectra were obtained with a bank of 100 filters covering the velocity range from -92km/s to +75km/s. The velocity resolution was 2 km/sec (except at the ends of the spectra) and the beamwidth was 36arcmin. The spacing between points observed on the sky is (0.3deg/cosb) in Galactic longitude and (0.6deg) in Galactic latitude. A FITS version of the survey was derived at the Astrophysics Data Facility (NASA/GSFC) from the original catalog of spectra. The approximately 130,000 good spectra in the catalog (i.e., those with status code 1 and which have flat baselines) were interpolated to a uniform channel width in frequency, shifted as appropriate to take into account the proper central velocities, then interpolated onto a regular grid in Galactic coordinates. For the latter interpolation, the cos(b) corrections for longitude offsets were taken into account; no interpolation was done across gaps in coverage greater than 2 deg. Latitude-velocity slices were written in FITS format for each 30 arcmin of longitude. Separate files were written for the negative latitude (b < -10 deg ) and positive latitude (b > 10 deg) ranges. Slices containing no spectra, primarily negative latitude spectra in the fourth Galactic quadrant, were not written. A longitude-latitude map, integrated over all velocities, was also written in FITS format to illustrate the coverage of the individual latitude-velocity slices.

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