IRAC Instrument Handbook - IRSA - California Institute of Technology
IRAC Instrument Handbook - IRSA - California Institute of Technology
IRAC Instrument Handbook - IRSA - California Institute of Technology
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<strong>IRAC</strong> <strong>Instrument</strong> <strong>Handbook</strong><br />
CRPIX2 = 128. / Reference pixel along axis 2<br />
CRVAL1 = 346.229408109806 / [deg] RA at CRPIX1,CRPIX2 (using Pointing Recon<br />
CRVAL2 = 12.3406747724052 / [deg] DEC at CRPIX1,CRPIX2 (using Pointing Reco<br />
CRDER1 = 3.47278123674643E-05 / [deg] Uncertainty in CRVAL1<br />
CRDER2 = 3.44327670377712E-05 / [deg] Uncertainty in CRVAL2<br />
RA_HMS = '23h04m55.1s' / [hh:mm:ss.s] CRVAL1 as sexagesimal<br />
DEC_DMS = '+12d20m26s' / [dd:mm:ss] CRVAL2 as sexagesimal<br />
RADESYS = 'ICRS ' / International Celestial Reference System<br />
EQUINOX = 2000. / Equinox for ICRS celestial coord. system<br />
CD1_1 = 0.000165673336023108 / Corrected CD matrix element with Pointing Recon<br />
CD1_2 = -0.000296839887227466 / Corrected CD matrix element with Pointing Reco<br />
CD2_1 = -0.000296695378233646 / Corrected CD matrix element with Pointing Reco<br />
CD2_2 = -0.00016538074830257 / Corrected CD matrix element with Pointing Recon<br />
CTYPE1 = 'RA---TAN-SIP' / RA---TAN with distortion in pixel space<br />
CTYPE2 = 'DEC--TAN-SIP' / DEC--TAN with distortion in pixel space<br />
PXSCAL1 = -1.22334117768332 / [arcsec/pix] Scale for axis 1 at CRPIX1,CRPIX2<br />
PXSCAL2 = 1.22328355209902 / [arcsec/pix] Scale for axis 2 at CRPIX1,CRPIX2<br />
PA = -119.12383984174 / [deg] Position angle <strong>of</strong> axis 2 (E <strong>of</strong> N) (was OR<br />
UNCRTPA = 0.000467418894131902 / [deg] Uncertainty in position angle<br />
CSDRADEC= 1.31286126610331E-06 / [deg] Costandard deviation in RA and Dec<br />
SIGRA = 0.0965180263226379 / [arcsec] RMS dispersion <strong>of</strong> RA over DCE<br />
SIGDEC = 0.0477081433171542 / [arcsec] RMS dispersion <strong>of</strong> DEC over DCE<br />
SIGPA = 0.627707783301654 / [arcsec] RMS dispersion <strong>of</strong> PA over DCE<br />
PA = -119.12383984174 / [deg] Position angle <strong>of</strong> axis 2 (E <strong>of</strong> N) (was OR<br />
RA_RQST = 346.229439557555 / [deg] Requested RA at CRPIX1, CRPIX2<br />
DEC_RQST= 12.3408384725542 / [deg] Requested Dec at CRPIX1, CRPIX2<br />
PM_RA = 0. / [arcsec/yr] Proper Motion in RA (J2000)<br />
PM_DEC = 0. / [arcsec/yr] Proper Motion in Dec (J200)<br />
RMS_JIT = 0.00561943353954093 / [arcsec] RMS jitter during DCE<br />
RMS_JITY= 0.00415225189801845 / [arcsec] RMS jitter during DCE along Y<br />
RMS_JITZ= 0.00378640165338011 / [arcsec] RMS jitter during DCE along Z<br />
SIG_JTYZ= -0.000574938554882557 / [arcsec] Costadard deviation <strong>of</strong> jitter in YZ<br />
PTGDIFF = 0.599601238096299 / [arcsec] Offset btwn actual and rqsted pntng<br />
PTGDIFFX= 0.460985501941048 / [pixels] rqsted - actual pntng along axis 1<br />
PTGDIFFY= -0.383877068036649 / [pixels] rqsted - actual pntng along axis 2<br />
RA_REF = 346.235833333333 / [deg] Commanded RA (J2000) <strong>of</strong> ref. position<br />
DEC_REF = 12.3227777777778 / [deg] Commanded Dec (J2000) <strong>of</strong> ref. position<br />
USEDBPHF= T / T if Boresight Pointing History File was used<br />
BPHFNAME= 'SBPHF.0773452800.031.pntg' / Boresight Pointing History Filename<br />
FOVVERSN= 'BodyFrames_FTU_14a.xls' / FOV/BodyFrames file version used<br />
RECONFOV= '<strong>IRAC</strong>_Center_<strong>of</strong>_3.6umArray' / Reconstructed Field <strong>of</strong> View<br />
ORIG_RA = 346.229614257812 / [deg] Original RA from raw BPHF (without pointi<br />
ORIG_DEC= 12.3407106399536 / [deg] Original Dec from raw BPHF (without point<br />
ORIGCD11= 0.0001656730165 / [deg/pix] Original CD1_1 element (without point<br />
ORIGCD12= -0.0002968400659 / [deg/pix] Original CD1_2 element (without point<br />
ORIGCD21= -0.0002966955653 / [deg/pix] Original CD2_1 element (without point<br />
ORIGCD22= -0.0001653804356 / [deg/pix] Original CD2_2 element (without point<br />
/ DISTORTION KEYWORDS<br />
A_ORDER = 3 / polynomial order, axis 1, detector to sky<br />
A_0_2 = 2.9656E-06 / distortion coefficient<br />
A_0_3 = 3.7746E-09 / distortion coefficient<br />
Pipeline Processing 87 Level 1 (BCD) Pipeline
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