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Maintained by: Virginia
Kilborn
Last Updated: 22 August 2001
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Introduction
The HI Jodrell All Sky Survey (HIJASS) uses a 4 beam 'multibeam'
system mounted on the Lovell Telescope.
The system and back end were built in collaboration with the
Australia Telescope National Facility (ATNF). The multibeam system
had commisioning tests in mid 1999, and the first HIJASS data was
taken in 2000. The survey is a blind survey of the 21cm line, with a
velocity range of -3000 km/s to 10,000 km/s. The aim is to cover the
whole of the northern sky (north of +25 degrees declination) to a
similar sensitivity as the southern HIPASS survey. The approximate
RMS level of the final data is 15 mJy/beam (compared to 13 mJy/beam
for HIPASS).
Data reduction uses the AIPS++ reduction package, and in particular
the bandpass removal program livedata, and gridding software
gridzilla.
Observing Strategy
The survey is carried out using central declination bands separated by
8 degrees as the center. The telescope scans in declination, making 8 degree
strips that are the width of the multibeam receiver. The telescope is
then slightly offset, and scans are made to 'fill in the gaps'.
Survey Members
Cardiff University:
- Mike Disney (PI)
- Marco Grossi (PhD Student)
- Diego Garcia (PhD Student)
- Robert Lang (Engineering)
- Robert Minchin (PDRA)
University of Bristol:
Jodrell Bank Observatory:
- Christine Jordan (Computer Engineering)
- Virginia Kilborn (PDRA)
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