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20020602 report

Pointing model updates


69 data were collected on June 02 :

A strong trend of del -vs- elevation appears (centre panel), which was not present in data from a week ago. The new data were reduced using TPOINT and a new model installed at ~16:00 HST on 03 June. The change in behavious was identified by Nick Rees as occurring on 29 May - the day of the SCUBA fore-optics removal-&-replacement. Collimations differences may be expected for the other receivers from this time.

Subsequent datasets of 17 and 28 SCUBA pointings, resp., taken on the next two nights are shown below :

  • (One extremely deviant pointing on 1044+719 at ~18:30 HST on the 04th has been discarded.)
Typical raw rms residuals in (daz,del) would seem to be (1.8", 1.8").


Iain Coulson
Latest Update : 05 Jun 2002
Contact: Iain Coulson. Updated: Sat Nov 6 18:00:25 HST 2004

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