DV02 Pointing System Issues and Tracking


TIP Last Update: JeffMangum - 25 March 2010

Issues Tracked

Resolved issues indicated with strike through.

  • AIVMAN-1154: AIV Pre-Acceptance: Support Vertex OPT (#2 Onward); Vertex OPT Observations/Work
    • Optical pointing testing at SEF.
  • AIV-549: Antenna #3 AIV - DV02: OPT Verification
    • Optical pointing verification at OSF.
  • AIV-1636: Antenna #3 AIV - DV02 - AOS: Radio Pointing (Interferometric)
    • Radiometric pointing verification at AOS (immediately following move from OSF to AOS).
  • CAR-62: ALMA Corrective Action Requests and Non-conformance Reports: Investigate Cause of Pointing Problems with DV01, DV02 and PM03
    • Azimuth hysteresis problem on DV01 and DV02. Contains reports noting cause and resolution (better alignment of azimuth encoder shaft).

-- JeffMangum - 2009-12-01

Pointing Model Coefficients

All units arcsec.

Date Pad IA IE CA NPAE AN AW HECE HESE
24 April 2009
SEF2
+135.08
+68
-329
-27.16
-13.15
+69.09
-18.74
-18.30

Date Pad HACA HASA HACA2 HASA2 HACA3 HASA3 HECA2 HESA2 HECA3 HESA3
24 April 2009
SEF2
+1.54
+4.02
-2.01
-3.87
-0.20
-0.61
-1.27
-0.97
-0.53
-1.09

Topic revision: r2 - 2010-03-25, JeffMangum
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