Index A absolute photometry absolute spectrophotometry grism ACCUM mode algorithm calnica calnicb 1, 2 amplifier glow analog-to-digital conversion aperture correction array readout association table 1, 2, 3 astrometry absolute B background 1, 2 bars bias bias reset level jumps pedestal shading bias correction bias derived temperature CalTempFromBias 1, 2 Bright Earth Persistence (BEP) 1, 2 nic_rem_persist BRIGHTOBJ mode C calibrated science file calibration 1, 2 re-calibrating, when to switches calnica task algorithm calnicb task algorithm CalTempFromBias bias derived temperature 1, 2 chcalpar task calibration switches chop pattern background conversion counts to flux or magnitude coronagraphic hole coronagraphic reductions cosmic ray identification cosmic ray persistence see also saaclean count rate non-linearity D dark current dark subtraction Data Quality Array bit settings dataset differential photometry digiphot package PSF subtraction distortion geometric dither pattern background E earthlight scattered emission line filters erratic middle column/row exposure log sheet exposures multiple, combining F files naming conventions filters available flat field color dependence flatcorr temperature-dependent G geometric distortion ghost optical grism absolute spectrophotometry aXe data reduction NICMOSlook spectroscopy grot H header keywords I icons used in this manual imheader task examine NICMOS header iminfo task examine NICMOS header integration intermediate multiaccum science file K keywords header L linearization correction M magnitude Janskys, NICMOS data markdq task mark data quality flags mode readout mosaic constructing mosaic file mstools package image sets MULTIACCUM mode MultiDrizzle multiple exposures combining N NICMOS absolute photometry ACCUM mode association table bad pixel BRIGHTOBJ mode calibration process described emission line filters file names grism spectroscopy grism, absolute spectrophotometry keywords MULTIACCUM mode paper products pipeline calibration PSF, subtracting RAMP mode readout mode recalibrating data red leak noise calculation nonlinearity detector P paper products pedsky pedsub persistence bright earth cosmic ray photon Phase II see "proposal" photometric correction 1, 2 photometry absolute differential pixel centering photon persistence pipeline NICMOS calibration pixel bad centering hot, cold, grot polarization analysis polarizer post-calibration association table proposal comparing to data PSF NICMOS, subtracting pstack task plot samples as function of time R RAMP mode raw science file readout mode red leak rnlincor 1, 2 runcalsaa S SAAclean 1, 2 scattered earthlight spectra extraction, grism spectroscopy grism Staypuft (Mr. Staypuft anamoly) STSDAS NICMOS calibration NICMOS software support file 1, 2 T trailer file 1, 2 typographic conventions in this manual 1, 2 U units conversion user support help desk V vignetting W warning types in this document wavelength calibration, grism Z zeroth read non-zero zeroth read subtraction
