JCMT Pointing Reports - 2001

• Jan 07 - Inclinometry - OK
• Jan 09 - New pointing model installed
• Jan 10 - Relative pointing between RxB & RxW_D established
• Feb 06 - New models installed following Central Bearing Load adjustment
• Feb 15 - Focus parameter updates : ZA_SCUBA worries
• Feb 18 - Inclinometry - minimal change
• Feb 28 - Pointing defects uncorrectable using current thermal parameters
• Mar 05 - Focus parameter updates : ZA_SCUBA updated
• Mar 12 - Inclinometry - minimal change ; Pointing model update
• Mar 14 - Empirical correction updated
• Mar 19 - Dean's imbalance theory for change in Empirical correction
• Mar 20 - Empirical correction tested
• Mar 22 - Empirical correction tested again
• Apr 18 - Empirical correction tested - changes continue
• Apr 19 - Empirical correction redetermined - HUGE changes afoot !
• Apr 19 - Elevation encoder mounting collar maintenance plan
• Apr 20 - Empirical correction checked : still OK after the engineering
• Apr 25 - Elevation encoder replaced
• Apr 26 - Elevation encoder adjusted - new transit data
• Apr 27 - No further elevation encoder adjustments, but further transit data
• May 01 - Transit pointing error -vs- elevation
• May 02 - Transit pointing error -vs- elevation - II
• May 08 - Inclinometry - first remote data acquisition : minimal change
• May 11 - Transit : tracking -vs- pointing
• May 14 - Summary of transit tracking problem so far.
• May 15 - Transit : tracking -vs- pointing again
• May 17 - Transit tracking on 3c273 and CenA
• May 20 - New Pointing and inclinometry models
• May 23 - New pointing model installed
• May 31 - New inclinometry model
• Jun 18 - Transit tracking on g343.0
• Jun 19 - Installation of algorithm to correct 'transit tracking' errors
• Jun 24 - New CW & CCW inclinometry models
• Jun 26 - Allsky Pointing & Transit tracking on g343.0
• Jun 29 - New track model - no significant changes
• Jul 06 - New track model - no significant changes
• Jul 20 - Transit step : measures from the sky and from inclinometry
• Jul 21 - Transit tracking confirms new step-size - errors now 1.4" rms
• Jul 22 - New track model - no significant changes
• Aug 15 - New track model - no significant changes
• Sep 06 - New track model - used new inclinometre scales
• Sep 18 - New track model - after 2nd attempt
• Sep 21 - New track model - 3rd time lucky.
• Oct 01 - Transit correction & pointing model updated
• Oct 06 - Track profile = Function(telescope elevation)   : 1^st results
• Oct 16 - Transit inclinometry
• Oct 17 - Track profile = Function(telescope elevation)   : elevation=60
• Oct 18 - Track profile = Function(telescope elevation)   : elevation = 30 60 70 80
• Oct 19 - Repeat of inclinometry at elevation = 60
• Oct 24 - Track profile at elevation = 20
• Oct 25 - inclinometry task incorrectly incorporating transit correction
• Oct 27 - Track inclinometry at elevation = 90
• Nov 01 - Pointing problem near zenith reported
• Nov 12 - Track inclinometry at elevation = 90, 80
• Nov 26 - Track inclinometry at elevation = 90, 80
• Dec 18 - Recovery from Central Bearing Load Adjustment
• Dec 23 - new SCUBA data allow pointing model update
• Dec 31 - Changes in inclinometry baselines over 3.5 years

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