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operations:pointing [2016/05/31 06:27] Jim Lovell |
operations:pointing [2016/08/23 02:37] Jim Lovell [Version 2016.235] |
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===== Hobart 12m model ===== | ===== Hobart 12m model ===== | ||
+ | |||
+ | ==== Version 2016.235 ==== | ||
+ | |||
+ | Taken following re-installation of S/X feed and movement of subreflector to original position. | ||
+ | |||
+ | Newly derived coefficients: | ||
+ | <code> | ||
+ | 00007 2016 235 23 14 09 0 | ||
+ | 90.0000 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 | ||
+ | -0.4333212972 0.0000000000 0.0158737078 0.0405583084 0.0002418841 | ||
+ | 0.0006486370 0.1193821207 0.0167687163 0.0000000000 0.0000000000 | ||
+ | 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 | ||
+ | 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 | ||
+ | 0.0000000000 0.0000000000 0.0006459429 0.0000000000 0.0000000000 | ||
+ | 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 | ||
+ | </code> | ||
+ | |||
+ | ^ FS Coeff ^ HMI Coef ^ New FS model ^ | ||
+ | | P1 | G2| -0.4333 | | ||
+ | | P3 | G3| 0.0159 | | ||
+ | | P4 | -G1| 0.0406 | | ||
+ | | P5 | G5| 0.0002 | | ||
+ | | P6 | -G4| 0.0006 | | ||
+ | | P7 | G7| 0.1194 | | ||
+ | | P8 | G8| 0.0168 | | ||
+ | | P23 | G9| 0.0006 | | ||
+ | |||
+ | ^HMI Coef | ||
+ | | G1 | -0.0406 | | ||
+ | | G2 | -0.4333 | | ||
+ | | G3 | 0.0159 | | ||
+ | | G4 | -0.0006 | | ||
+ | | G5 | 0.0002 | | ||
+ | | G6 | not used | | ||
+ | | G7 | 0.1194 | | ||
+ | | G8 | 0.0168 | | ||
+ | | G9 | 0.0006 | | ||
+ | |||
+ | Field system and HMI have been updated | ||
+ | |||
+ | ==== Temporary HMI model ==== | ||
+ | This is a temporary model applied in HMI during broadband tests with the Callisto system. | ||
+ | |||
+ | Original model: | ||
+ | <code> | ||
+ | P1 -0.0335 | ||
+ | P2 -0.4380 | ||
+ | P3 0.0066 | ||
+ | P4 -0.0026 | ||
+ | P5 -0.0023 | ||
+ | P6 0 | ||
+ | P7 0.1538 | ||
+ | P8 0.0214 | ||
+ | P9 0.0026 | ||
+ | </code> | ||
+ | |||
+ | Additional offsets are | ||
+ | <code> | ||
+ | Az = +2.7 arcmin = 0.045 deg | ||
+ | El = -4.0 arcmin = -0.0667 deg | ||
+ | </code> | ||
+ | |||
+ | The DC terms in the pointing model are P2 (Az) and P7 (El), so new model is: | ||
+ | <code> | ||
+ | P1 -0.0335 | ||
+ | P2 -0.393 | ||
+ | P3 0.0066 | ||
+ | P4 -0.0026 | ||
+ | P5 -0.0023 | ||
+ | P6 0 | ||
+ | P7 0.08713 | ||
+ | P8 0.0214 | ||
+ | P9 0.0026 | ||
+ | </code> | ||
+ | |||
+ | |||
+ | |||
+ | ==== Version 2016.151 ==== | ||
+ | 2 June 2016 | ||
+ | |||
+ | Observations over 24he. Little change to rms before and after | ||
+ | |||
+ | <code> | ||
+ | Data: | ||
+ | xEl mean -0.0013 | ||
+ | xEl RMS 0.007 | ||
+ | El mean -0.015 | ||
+ | El RMS 0.008 | ||
+ | |||
+ | After solution: | ||
+ | xEl RMS 0.007 | ||
+ | El RMS 0.009 | ||
+ | </code> | ||
+ | |||
+ | Solutions applied err2016.151 | ||
+ | |||
+ | {{:operations:opsmac1.png?200|}} | ||
+ | |||
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{{:operations:yg_pointing_2016_151.png?200|}} | {{:operations:yg_pointing_2016_151.png?200|}} | ||
+ | |||
+ | This solution was put into HMI on 22 June 2016, ~23:45 UT (day 174). Parameters are: | ||
+ | |||
+ | <code> | ||
+ | G1 -0.0105 | ||
+ | G2 -0.0070 | ||
+ | G3 0.0180 | ||
+ | G4 0.0094 | ||
+ | G5 -0.0024 | ||
+ | G7 0.2059 | ||
+ | G8 0.0158 | ||
+ | G9 0.0007 | ||
+ | </code> | ||
+ | |||
+ | Note that these were initially put in to HMI on June 20 but the sign for G4 was wrong. Not sure if that had a significant impact or not. | ||
+ | |||
+ | Also updated HMI (on day 175, 00 UT) with revised station coordinates. Only sig change was to elevation which was 50m too low. | ||
+ | |||
+ | <code> | ||
+ | Lat, Long, Elevation: | ||
+ | Before: -29.0465, 115.3467, 200.0 | ||
+ | After: -29.0469, 115.3465, 250.48 | ||
+ | </code> | ||
+ | |||