DV22 Pointing System Issues and Tracking


TIP Last Update: JeffMangum - 10 May 2012

Issues Tracked

  • VERTEX-625: NA Antenna Antenna Acceptance Tests -- Antenna 9022 (DV22) Acceptance Tests -- Pointing
    • Acceptance testing.

-- JeffMangum - 2012-05-10

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 2012-06-21
  +  
Day 2
Completed 2012-06-22
  +  
Day 3
Completed 2012-06-23 (no data)
  +  
Day 4
Completed 2012-06-24
  +  
Day 5
Completed 2012-06-25
  +  
Day 6
Completed 2012-06-26
  +  
Day 7
Completed 2012-06-27
  +  
Day 8
Completed 2012-06-28
  +  
Day 9
Completed 2012-06-29
  +  
Day 10
Completed 2012-06-30 (no data)
  +  
Day 11
Completed 2012-07-01
  +  
Day 12
Completed 2012-07-02
  +  
Day 13
Completed 2012-07-03
  +  
Day 14
 
  
  

Offset Pointing

(todo - todo done - done )

 +
State Item Comment  
(Az,El) = (0,30)
Completed 2012-06-21 at (350,34)
  +  
(Az,El) = (0,45)
Completed 2012-06-22 at (7,43)
  +  
(Az,El) = (0,60)
Completed 2012-06-21 at (356,62)
  +  
(Az,El) = (0,75)
Completed 2012-06-23 at (335,76)
Attempted again 2012-07-03 at (0,84): El drift +-0.5 arcsec; No metrology stiction; Only half of stars acquired due to a combination of (1) metrology activation 4 seconds after star acquisition driving antenna off-target for ~11 deg Az slew to new target position and (2) El overshoot for one of the 3 stars in the group
  +  
(Az,El) = (60,30)
Completed 2012-06-26 at (34,37)
  +  
(Az,El) = (60,45)
Completed 2012-06-24 at (57,45)
  +  
(Az,El) = (60,60)
Completed 2012-06-23 at (46,62)
  +  
(Az,El) = (60,75)
Attempted 2012-06-24 at (86,75); El drift +-0.5 arcsec and large metrology stiction +-0.5 arcsec in Az.
Attempted again 2012-06-24 at (87,77); El drift +-0.5 arcsec and metrology stiction in Az and El.
Attempted again 2012-06-26 at (46,72): El drift +-1.5 arcsec.
Completed 2012-06-26 at (36,74): Severe metrology stiction in Az and El.
Attempted again 2012-06-27 at (40,74); El drift +-0.5 arcsec and severe Az metrology stiction.
Attempted again 2012-06-27 at (31,75); El drift +-0.5 arcsec and severe Az metrology stiction.
Attempted again 2012-06-29 at (64,67); El drift +-0.5 arcsec.
  +  
(Az,El) = (120,30)
Attempted 2012-06-25 at (138,36); El drift +-1.0 arcsec
Completed 2012-06-26 at (131,31)
  +  
(Az,El) = (120,45)
Completed 2012-06-22 at (134,48)
  +  
(Az,El) = (120,60)
Completed 2012-06-14 at (128,57)
  +  
(Az,El) = (120,75)
Completed 2012-06-25 at (84,80)
  +  
(Az,El) = (180,30)
Completed 2012-06-22 at (173,34)
  +  
(Az,El) = (180,45)
Completed 2012-06-24 at (164,49)
Completed again 2012-06-30 at (191,40)
Attempted again 2012-06-30 at (192,38); El drift +-1 arcsec; metrology stiction in Az and El
  +  
(Az,El) = (180,60)
Completed 2012-06-21 at (174,60)
Attempted again 2012-07-02 at (190,60); El drift +-0.5 arcsec
Attempted again 2012-07-03 at (194,60); El drift +-0.75 arcsec
  +  
(Az,El) = (180,75)
Completed 2012-06-24 at (169,67)
Attempted again 2012-07-02 at (201,69); El drift +-0.5 arcsec
  +  
(Az,El) = (240,30)
Completed 2012-06-23 at (214,34)
  +  
(Az,El) = (240,45)
Completed 2012-06-14 at (252,45)
  +  
(Az,El) = (240,60)
Completed 2012-06-23 at (252,55)
  +  
(Az,El) = (240,75)
Completed 2012-06-23 at (244,74)
  +  
(Az,El) = (300,30)
Completed 2012-06-21 at (307,28)
Attempted again 2012-07-01 at (287,27); El drift +-1 arcsec
Completed again 2012-07-01 at (300,33)
Completed again 2012-07-02 at (302,28)
Completed again 2012-07-02 at (286,25)
Attempted again 2012-07-02 at (298,30)
  +  
(Az,El) = (300,45)
Completed 2012-06-21 at (310,50)
Completed again 2012-06-30 at (303,45)
Attempted again 2012-06-30 at (303,45); El drift +-0.5 arcsec
Attempted again 2012-07-01 at (315,45); El drift +-1 arcsec
  +  
(Az,El) = (300,60)
Attempted 2012-06-22 at (302,67): El drift +-0.5 arcsec
Completed 2012-06-22 at (296,62)
Attempted again 2012-07-01 at (279,60); El drift +-1.5 arcsec
Attempted again 2012-07-01 at (308,63); El drift +-0.5 arcsec
Completed again 2012-07-03 at (283,65); Minor El drift +-0.25 arcsec
  +  
(Az,El) = (300,75)
Attempted 2012-06-25 at (304,68); El drift +-0.75 arcsec
Completed 2012-06-26 at (274,76)
Completed again 2012-07-01 at (324,69)
Attempted again 2012-07-02 at (308,78); El drift +-0.75 arcsec
Completed again 2012-07-03 at (335,71); Az drift +-0.5 arcsec and metrology stiction in El
  
  

-- 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 - 2012-05-10
Topic revision: r17 - 2012-07-03, JeffMangum
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