JCMT Pointing Reports - 2002

• Jan 13 - Multiple inclinometry data
• Jan 17 - RxA pointing data suggest changing TF from -13" to zero ?
• Jan 25 - New inclinometry data
• Jan 28 - Pointing systematic explained
• Feb 10 - New inclinometry data and pointing model tweak
• Feb 13 - New inclinometry data
• Feb 18 - New inclinometry data at el=60
• Feb 25 - Pointing model tweak
• Feb 25 - Inclinometry at el=90 & 20 : Return of the 'spikes' ???
• Mar 03 - no confirmation of low wheel loading
• Mar 05 - Central Bearing Load Adjustment & recovery
• Mar 08 - Pointing model updated
• Mar 17 - Track model updated
• Mar 19 - Pointing model updated
• Mar 25 - Track model updated, transit step amplitude checked
• Mar 26 - Wierd inclinometry
• Mar 28 - Elevation=90 inclinometry seems fine
• Apr 03 - Inclinometer Settling times - revisited
• Apr 08 - Pointing model and collimation fiasco
• Apr 10 - Pointing model updated
• Apr 15 - Pointing : SCUBA -vs- RXA
• Apr 16 - SCUBA azimuth pointing residuals since 1997
• Apr 18 - Pointing experiments : TMU repeatability & tracking are OK
• Apr 21 - Azimuth pointing with RXA/RXB seems more normal now.
• Apr 23 - . . . although there are still some odd systematics.
• Apr 23 - Tracking of Uranus through transit
• Apr 24 - Inclinometry shows large (5") 'spikes'
• Apr 28 - SERVO adjusted. Inclinometry repeated. Wheel realignment detected.
• Apr 29 - Inclinometry - no big change since yesterday.
• May 01 - Inclinometry : antenna temperature ~1^o : spikes ~5"
• May 02 - Tracking reveals 10" errors
• May 07 - Further inclinometry
• May 13 - CW/CCW Inclinometry, & c.
• May 15 - Central bearing Load Adjusted - inclinometry /pointing followup
• May 17 - 'Cold' track data differs slightly from 'warm' ?
• May 21 - Pointing model updates
• May 25 - Inclinometry Update
• June 05 - Pointing model update
• Aug 01 - Inclinometry following July shutdown is OK
• Aug 05 - Pointing model update; Transit tracking OK
• Aug 12 - Inclinometry shows hints of 'spikes'
• Aug 14 - Inclinometry returns to 'normal', CCW data taken also
• Aug 19 - Further CW Inclinometry OK
• Aug 24 - Further CW Inclinometry OK
• Sep 05 - Further CW & transit Inclinometry, OK
• Sep 17 - Pointing model update
• Sep 20 - Further CW inclinometry, OK
• Sep 26 - Pointing & Tracking after the AEC PLC upgrade
• Oct 05 - Further CW inclinometry, OK
• Oct 20 - Transit Inclinometry both over and under the pole
• Oct 22 - Further CW & CCW Inclinometry, OK
• Nov 03 - Pointing model OK, rms errors 2" in az & el
• Nov 13 - Ambient air temperature -vs- antenna leg temperature
• Nov 18 - RxA-specific pointing model installed
• Nov 19 - RxA/B daz-vs-el systematic removed - but at what cost ?
• Nov 20 - RxB data now look v.good; transit data OK.
• Dec 05 - First SCUBA pointing following cryogenic repairs
• Dec 19 - Report to Operations meeting : recent SCUBA pointing is still poor
• Dec 28 - CW Inclinometry reveals antenna control problems
• Dec 30 - CW Inclinometry problems solved ?

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