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11.5 POSITION Mode Pipeline Output

The following example illustrates the current format of the output from the POSITION mode pipeline, which gives the key information needed for data analysis. Enhancements of this format are under development.

!

! CALFGS: VERSION 2.0

! date of calibration processing -> 18-FEB-97 15:44:29

!

!

OBSERVATION_ID = F3FV0602M !

OBSERVING_MODE = POSITION !

TARGET_ID = 6920_975 !

STAR_ID = 0 !

MAGNITUDE = 12.85 !

PRA = 92.22249166667 ! degrees, predicted target position

PDEC = 24.38458055556 ! degrees, predicted target position

!

RAV1 = 92.28756740940 ! degrees ... Spacecraft pointing data

DECV1 = 24.58115491606 ! degrees

ROLLV3 = 87.69312835639 ! degrees

X_POS = 6255.850861 ! Km ....... Spacecraft orbital position

Y_POS = 2940.146717 ! Km

Z_POS = -937.186147 ! Km

X_VEL = -3.271298 ! Km/sec ... Spacecraft orbital velocity

Y_VEL = 5.872820 ! Km/sec

Z_VEL = -3.460530 ! Km/sec

OBS_TIME = 1997 031 12:47:46 ! UT at (X,Y,Z,Vx,Vy,Vz)

!

ASTROMETER_FGS = 3 ! ID of astrometer FGS

FILTER = F583W ! ASTROMETER FGS FILTER

DISTORTION = PERFORM ! status: PERFORM, OMITT, or COMPLETED

LATERAL_COLOR = PERFORM !

WEDGE = PERFORM !

ABERRATION = PERFORM !

!

! *** POSITION from encoder values (-2=FGS data corrupted or not available)

! (FL) (FL) (FL)

X_AVE = -201.3386 -161.9243 191.5194 ! asec, FGS=1,2,3

Y_AVE = 795.5815 643.5501 716.0092 ! asec, FGS=1,2,3

X_X_AVE = 0.0020 0.0021 0.0028 ! asec, FGS=1,2,3

Y_Y_AVE = 0.0023 0.0017 0.0026 ! asec, FGS=1,2,3

X_Y_COR = 1.611E-01 1.513E-01 1.034E-01 ! asec, FGS=1,2,3

X_Y_COV = 7.395E-07 5.304E-07 7.656E-07 ! asec, FGS=1,2,3

!

X_MEDIAN = -201.3386 -161.9242 191.5194 ! asec, FGS=1,2,3

Y_MEDIAN = 795.5815 643.5503 716.0091 ! asec, FGS=1,2,3

X_MAD = 0.0016 0.0016 0.0021 ! asec, FGS=1,2,3

Y_MAD = 0.0018 0.0014 0.0021 ! asec, FGS=1,2,3

!

! *** positions valid only after DISTORTION & ABERRATION corrections ***

!

X_CORRECTED = -201.3161 -161.8805 191.4970 ! asec, FGS=1,2,3

Y_CORRECTED = 795.5054 643.5306 716.0089 ! asec, FGS=1,2,3

X_X_CORRECTED = 0.0020 0.0021 0.0028 ! asec, FGS=1,2,3

Y_Y_CORRECTED = 0.0023 0.0017 0.0026 ! asec, FGS=1,2,3

!

RA = -1.0000 -1.0000 -1.0000 ! deg FGS=1,2,3

DEC = -1.0000 -1.0000 -1.0000 ! deg FGS=1,2,3

!

EXPOSURE_TIME = 4.06500E+01 ! seconds of FINELOCK DATA (POSITION MODE)

NPIXELS = 1627 ! # samples used from FINELOCK interval

!

!

!

! ........................................................................... !

!

! PCS ALIGNMENT PARAMETERS FOR DIFFERENTIAL VELOCITY DE-ABBERATION

!

VELAB_SI = FGS

VELAB_FGS = 3

X_VELAB = -253.72

Y_VELAB = 712.47

!

DOM_GS_FGS = 2

!

! ........................................................................... !

!

! GUIDE STAR / ASTROMETER TRACKING

!

! FGS1 FGS2 FGS3

!

! GUIDE STAR GUIDE STAR ASTROMETER

! FINE LOCK FINE LOCK FINE LOCK

!

! ........................................................................... !

!

! PHOTOMETRY: average counts/25 msec over exposure interval

!

! GUIDE STAR GUIDE STAR ASTROMETER

! FGS1 FGS2 FGS3

!

PMTSUM = 831.6524 5843.9882 649.6138

PMTXA = 187.9005 1355.9204 160.2842

PMTXB = 175.9104 1254.1306 167.2680

PMTYA = 235.8850 1742.8638 165.0006

PMTYB = 231.9565 1491.0734 157.0609

!

PMTXA_BCK_MED = 4.00 ! astrometer bckgrnd MEDIAN of PMTXA (-1=NA)

PMTXB_BCK_MED = 5.00 ! astrometer bckgrnd MEDIAN of PMTXB (-1=NA)

PMTYA_BCK_MED = 4.00 ! astrometer bckgrnd MEDIAN of PMTYA (-1=NA)

PMTYB_BCK_MED = 4.00 ! astrometer bckgrnd MEDIAN of PMTYB (-1=NA)

!

PMTXA_BCK_AVE = 3.98 ! astrometer bckgrnd AVERAGE of PMTXA (-1=NA)

PMTXB_BCK_AVE = 4.71 ! astrometer bckgrnd AVERAGE of PMTXB (-1=NA)

PMTYA_BCK_AVE = 4.69 ! astrometer bckgrnd AVERAGE of PMTYA (-1=NA)

PMTYB_BCK_AVE = 4.10 ! astrometer bckgrnd AVERAGE of PMTYB (-1=NA)

!

PMTXA_BCK_MAD = 2.77 ! astrometer bckgrnd MAD of PMTXA (-1=NA)

PMTXB_BCK_MAD = 3.26 ! astrometer bckgrnd MAD of PMTXB (-1=NA)

PMTYA_BCK_MAD = 3.38 ! astrometer bckgrnd MAD of PMTYA (-1=NA)

PMTYB_BCK_MAD = 3.02 ! astrometer bckgrnd MAD of PMTYB (-1=NA)

!

PMTXA_BCK_SIG = 1.40 ! astrometer bckgrnd S.D. of PMTXA (-1=NA)

PMTXB_BCK_SIG = 1.73 ! astrometer bckgrnd S.D. of PMTXB (-1=NA)

PMTYA_BCK_SIG = 1.73 ! astrometer bckgrnd S.D. of PMTYA (-1=NA)

PMTYB_BCK_SIG = 1.48 ! astrometer bckgrnd S.D. of PMTYB (-1=NA)

!

PMTXA_BCK_TMIN = 2.00 ! astrometer bckgrnd trimed MIN for PMTXA (-1=NA)

PMTXB_BCK_TMIN = 2.00 ! astrometer bckgrnd trimed MIN for PMTXB (-1=NA)

PMTYA_BCK_TMIN = 2.00 ! astrometer bckgrnd trimed MIN for PMTYA (-1=NA)

PMTYB_BCK_TMIN = 2.00 ! astrometer bckgrnd trimed MIN for PMTYB (-1=NA)

!

PMTXA_BCK_TMAX = 7.00 ! astrometer bckgrnd trimed MAX for PMTXA (-1=NA)

PMTXB_BCK_TMAX = 8.00 ! astrometer bckgrnd trimed MAX for PMTXB (-1=NA)

PMTYA_BCK_TMAX = 8.00 ! astrometer bckgrnd trimed MAX for PMTYA (-1=NA)

PMTYB_BCK_TMAX = 7.00 ! astrometer bckgrnd trimed MAX for PMTYB (-1=NA)

!

SAMPLES_BCKGD = 1006 ! no. of samples used to compute background

!

PMTXA_WD_MED = 165.50 ! astrometer walkdown MED for PMTXA (-1=NA)

PMTXB_WD_MED = 164.00 ! astrometer walkdown MED for PMTXB (-1=NA)

PMTYA_WD_MED = 164.00 ! astrometer walkdown MED for PMTYA (-1=NA)

PMTYB_WD_MED = 160.00 ! astrometer walkdown MED for PMTYB (-1=NA)

!

PMTXA_WD_AVE = 165.43 ! astrometer walkdown AVE for PMTXA (-1=NA)

PMTXB_WD_AVE = 163.68 ! astrometer walkdown AVE for PMTXB (-1=NA)

PMTYA_WD_AVE = 165.38 ! astrometer walkdown AVE for PMTYA (-1=NA)

PMTYB_WD_AVE = 159.98 ! astrometer walkdown AVE for PMTYB (-1=NA)

!

PMTXA_WD_MAD = 11.19 ! astrometer walkdown MAD for PMTXA (-1=NA)

PMTXB_WD_MAD = 11.63 ! astrometer walkdown MAD for PMTXB (-1=NA)

PMTYA_WD_MAD = 11.98 ! astrometer walkdown MAD for PMTYA (-1=NA)

PMTYB_WD_MAD = 10.75 ! astrometer walkdown MAD for PMTYB (-1=NA)

!

PMTXA_WD_SIG = 13.89 ! astrometer walkdown S.D. for PMTXA (-1=NA)

PMTXB_WD_SIG = 14.48 ! astrometer walkdown S.D. for PMTXB (-1=NA)

PMTYA_WD_SIG = 14.85 ! astrometer walkdown S.D. for PMTYA (-1=NA)

PMTYB_WD_SIG = 13.11 ! astrometer walkdown S.D. for PMTYB (-1=NA)

!

NSAMPLES_X = 376 ! X AXIS: #SAMPLES USED TO COMPUTE WD PMT DIFF/SUM

X_FL_DIFF/SUM = -0.0219 ! X PMT DIFF/SUM FROM FLDV INTERVAL (-1=NA)

X_WD_DIFF/SUM = 0.0055 ! X PMT DIFF/SUM FROM WALKDOWN INTERVAL (-1=NA)

K1X_UPGREN69 = 0.0301 ! REF X AXIS S-CURVE INVERSE SLOPE OF UPGREN69

X_DIFF = -0.000824 ! X CENTROID SHIFT (ARCS), ADD TO X_MEDIAN (-1=NA)

!

NSAMPLES_Y = 241 ! Y AXIS: #SAMPLES USED TO COMPUTE WD PMT DIFF/SUM

Y_FL_DIFF/SUM = 0.0253 ! Y PMT DIFF/SUM FROM FLDV INTERVAL (-1=NA)

Y_WD_DIFF/SUM = 0.0171 ! Y PMT DIFF/SUM FROM WALKDOWN INTERVAL (-1=NA)

K1Y_UPGREN69 = 0.0151 ! REF Y AXIS S-CURVE INVERSE SLOPE OF UPGREN69

Y_DIFF = 0.000125 ! Y CENTROID SHIFT (ARCS), ADD TO Y_MEDIAN (-1=NA)

!

! ........................................................................... !

!

! COARSE TRACK coordinates

!

! GUIDE STAR GUIDE STAR ASTROMETER

! FGS1 FGS2 FGS3

!

CT_X = -124.846 -69.454 191.867 ! X, arc seconds

CT_Y = 705.588 720.397 716.168 ! Y, arc seconds

!

! ........................................................................... !

!

! raw, STAR SELECTOR values mean and median over measured interval

! (-2=mean, median not computed), (FL) = finelock, (CT) = COARSE TRACK

!

! GUIDE STAR GUIDE STAR ASTROMETER

! FGS1 (FL) FGS2 (FL) FGS3 (FL)

!

SS_A_AVERAGE = 0 0 0 ! "THETA A"

SS_B_AVERAGE = 0 0 0 ! "THETA B"

SS_A_MEDIAN = 499751 376375 258989 ! "THETA A"

SS_B_MEDIAN = 713495 830629 616509 ! "THETA B"

SPCR1 = 768442 734328 518064 ! "CT THETA A"

SPCR2 = 1560040 1479462 1232352 ! "CT THETA B"

!

!

! ........................................................................... !

!

! Star Selector to X,Y conversion parameters

!

! FGS1 FGS2 FGS3

!

SS_A_dev_angle = 6.885174200 6.759527300 6.852572700

SS_B_dev_angle = 6.862490000 6.772780000 6.857440000

SS_A_offset = -0.049323366 0.568665570 -0.627579600

SS_B_offset = 0.000000000 0.000000000 0.000000000

magnification = 57.219718800 57.236389900 57.043404000

!



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stevens@stsci.edu
Copyright © 1997, Association of Universities for Research in Astronomy. All rights reserved. Last updated: 11/12/97 07:58:20