DV21 Pointing System Issues and Tracking


TIP Last Update: JeffMangum - 20 April 2012

Issues Tracked

  • VERTEX-624: NA Antenna Antenna Acceptance Tests -- Antenna 9021 (DV21) Acceptance Tests -- Pointing
    • Acceptance testing.

-- JeffMangum - 2012-04-20

Test Matrix Progress Tracking

Tracking Performance

(todo - todo done - done )

 +
State Item Comment  
15 Minute Tracking Test
 
  
  

All-Sky Pointing

(todo - todo done - done )

 +
State Item Comment  
Day 1
Completed 2012-04-20
  +  
Day 2
Completed 2012-04-21
  +  
Day 3
Completed 2012-04-22
  +  
Day 4
Completed 2012-04-23
  +  
Day 5
Completed 2012-04-24
  +  
Day 6
Completed 2012-04-25
  +  
Day 7
Completed 2012-04-26
  +  
Day 8
Completed 2012-04-27
  +  
Day 9
Completed 2012-04-28 (no data; cloudy)
  +  
Day 10
Completed 2012-04-29
  +  
Day 11
Completed 2012-04-30
  +  
Day 12
Completed 2012-05-01
  +  
Day 13
Completed 2012-05-02
  +  
Day 14
Completed 2012-05-03
  
  

Offset Pointing

(todo - todo done - done )

 +
State Item Comment  
(Az,El) = (0,30)
Completed 2012-05-01 at (2,24)
Completed again 2012-05-01 at (358,24)
  +  
(Az,El) = (0,45)
Completed 2012-04-27 at (25,41)
  +  
(Az,El) = (0,60)
Completed 2012-05-02 at (6,57)
  +  
(Az,El) = (0,75)
Attempted 2012-04-27 at (13,70); Az drift +-0.5 arcsec and only 36 out of 60 measurements acquired.
Attempted 2012-04-30 at (9,80); Metrology stiction in Az; Only 34 measurements acquired.
Completed 2012-05-02 at (348,71)
  +  
(Az,El) = (60,30)
Completed 2012-04-27 at (35,36)
  +  
(Az,El) = (60,45)
Completed 2012-04-26 at (31,44)
  +  
(Az,El) = (60,60)
Completed 2012-04-29 at (72,59)
  +  
(Az,El) = (60,75)
Completed 2012-04-30 at (48,75)
Completed again 2012-04-30 at (32,78)
Completed again 2012-04-30 at (40,74)
  +  
(Az,El) = (120,30)
Completed 2012-04-29 at (141,35)
  +  
(Az,El) = (120,45)
Completed 2012-04-27 at (143,38)
  +  
(Az,El) = (120,60)
Completed 2012-05-01 at (92,62)
  +  
(Az,El) = (120,75)
Completed 2012-05-02 at (114,78)
  +  
(Az,El) = (180,30)
Completed 2012-05-01 at (199,31)
  +  
(Az,El) = (180,45)
Completed 2012-04-26 at (178,44)
Completed again 2012-04-26 at (180,44)
  +  
(Az,El) = (180,60)
Completed 2012-04-29 at (177,52)
  +  
(Az,El) = (180,75)
Completed 2012-05-02 at (192,70)
  +  
(Az,El) = (240,30)
Completed 2012-04-27 at (238,24)
  +  
(Az,El) = (240,45)
Completed 2012-04-29 at (225,38)
Attempted again 2012-04-29 at (230,50); El drift +-0.5 arcsec
  +  
(Az,El) = (240,60)
Completed 2012-05-01 at (259,63)
  +  
(Az,El) = (240,75)
Attempted 2012-05-02 at (250,72); El drift +-0.5 arcsec and severe metrology stiction in El.
Attempted again 2012-05-03 at (257,78); El drift +-0.5 arcsec.
Attempted again 2012-05-03 at (247,72); Severe metrology stiction in El.
Completed 2012-05-04 at (245,70)
Attempted again 2012-05-04 at (245,68); El drift +-0.5 arcsec.
  +  
(Az,El) = (300,30)
Completed 2012-04-30 at (288,34)
  +  
(Az,El) = (300,45)
Completed 2012-04-30 at (295,43)
  +  
(Az,El) = (300,60)
Completed 2012-04-26 at (312,62)
Completed again 2012-04-26 at (306,59)
  +  
(Az,El) = (300,75)
Completed 2012-04-30 at (274,76)
  
  

-- JeffMangum - 2012-04-20

Pointing Model Coefficients

All units arcsec.

Date Pad IA IE CA NPAE AN AW HECE HESE
15 December 2011
SEF1
-330.14
+61.28
+53.06
-23.75
+7.81
+70.74
-8.61
-38.69

Date Pad HACA HASA HACA2 HASA2 HECA2 HESA2 HECA3 HESA3 HACA3 HASA3
15 December 2011
SEF1
+1.40
-0.27
+1.13
-1.17
-0.68
-0.27
+0.68
-0.63
+0.08
-0.01

-- JeffMangum - 2012-04-20
Topic revision: r12 - 2012-05-04, JeffMangum
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