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JCMT Pointing Reports - 2004

JCMT Pointing Reports - 2004

  • Jan 08 - Allsky pointing best yet
  • Jan 10 - CW inclinometry shows +2" changes
  • Jan 16 - CW inclinometry again shows changes
  • Jan 19 - Transit tracking with SCUBA and RxA
  • Jan 24 - CW inclinometry shows no further changes
  • Feb 05 - CW inclinometry OK, but not used
  • Feb 14 - Transit tracking of 3c279 does not resolve transit behaviour
  • Feb 15 - CW inclinometry OK
  • Mar 04 - CW inclinometry OK
  • Mar 10 - CBLA, inclinometry, allsky pointing, all OK
  • Mar 13 - CW inclinometry OK
  • Mar 22 - CW & CCW inclinometry OK
  • Apr 17 - CW inclinometry OK
  • Apr 30 - CW inclinometry OK - track model updated
  • May 08 - Transit tracking with RxA - Return of the Race Defect ?
  • May 12 - CW & CCW inclinometry OK - track model not updated
  • Jun 03 - Tracking of Uranus gives race defect amplitude at horizon <4"
  • Jun 06 - Test of old empirical correction, suitably scaled
  • Jun 07 - RxW pointing collimations w.r.t. RxB
  • Jun 11 - Test of empirical correction - results ambiguous
  • Jun 12 - CW inclinometry OK - new track model installed
  • Jun 15 - New derivation of empirical correction profile and amplitude
  • Jun 18 - Elevation residuals = fn(leg temperatures)
  • Jun 25 - Empirical correction profile and amplitude checked, OK
  • Jul 02 - A-frame leg temperatures : sensors mis-identified
  • Jul 08 - Empirical correction profile and amplitude monitored
  • Jul 18 - CW inclinometry OK-ish - new track model installed
  • Jul 21 - Empirical correction profile and amplitude monitored
  • Jul 23 - A-frame leg temperatures : TEMP_MEAN_SLOPE updated
  • Jul 29 - A-frame leg temperatures : TEMP_MEAN_SLOPE updated
  • Aug 02 - CW inclinometry OK-ish - track model not updated
  • Aug 06 - A-frame leg temperatures : new calibrations installed
  • Aug 09 - A-frame leg temperatures : data suggest elevation pointing OK
  • Aug 11 - Thermal corrections working nominally : UT 20040811
  • Aug 28 - CW inclinometry OK
  • Aug 30 - SCUBA elevation pointing residuals -vs- temperature, & focus
  • Sep 17 - Elevation pointing : SCUBA OK
  • Sep 19 - CW inclinometry OK
  • Sep 30 - Elevation pointing - TEMP_MEAN_SLOPE set to -1.5"/deg
  • Oct 03 - CW inclinometry; Ch1 fault; previous track model maintained
  • Oct 04 - Elevation pointing - TEMP_MEAN_SLOPE set to -0.5"/deg
  • Oct 06 - Elevation pointing - coding error found
  • Oct 22 - CW inclinometry OK
  • Oct 26 - Focus analysis for September & October
  • Oct 31 - CW inclinometry OK
  • Nov 06 - CW inclinometry - larger changes than normal
  • Nov 29 - Further CW inclinometry - all seems OK
  • Dec 11 - CW inclinometry shows quadrant-wide systematic level change
  • Dec 15 - CBLA, CW inclinometry and all-sky Pointing : all OK
  • Dec 20 - Tracking shows race defect correction OK
  • Dec 28 - Focus & Thermal updates for December
  • Dec 30 - CW inclinometry OK

Return to POINTING

Contact: Iain Coulson. Updated: Fri Dec 31 10:53:29 HST 2004

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