S12.0 Pointing Transfer Checklist for IRS.               (F. Masci 1/28/05)
==========================================

CHNLNUM = 0:
------------

1. For EXPTYPE = 'pki':
   -Post fpg'd (primary) blue cropped image is named "bcd_blue_fp.fits".
   -Post fpg'd red cropped image is named "bcd_red_fp.fits".
   -Uncropped (full 128x128 image) is propagated too and called pki_full.fits.
   -Have WCS (CRVAL1,2; CD matrix..) in separate blue, red cutout images
    and uncropped (full 128x128 image) pki_full.fits with reference pixel
    for WCS in blue FOV for latter as defined in cdelt12_distort_full.tbl.
   -Applied separate distortion/pixel-scale/CRPIX files for each of these.
   -Have RA_FOV, DEC_FOV = reconstructed pointing of commanded FOV in each
    of the blue and red cutouts, pki_full.fits.
   -Commanded pntg is given by: RA_RQST, DEC_RQST throughout.
   -PTGDIFF keyword value = distance[(RA_FOV,DEC_FOV)-(RA_RQST, DEC_RQST)];
   -PTGDIFFX keyword value = X component of PTGDIFF in arcsec in pixel frame
   -PTGDIFFY keyword value = Y component of PTGDIFF in arcsec in pixel frame
   
2. For EXPTYPE = 'sp' (one single 128x128 image):
   -Post fpg'd (primary) image named "bcd_fp.fits"
   -Have RA_SLT, DEC_SLT at position determined from desired "aperture"
    in translation table namelist: apertureNames.tbl
   -Have WCS (CRVAL1,2; CD matrix..) with reference pixel in 
    blue FOV as defined in cdelt12_distort_full.tbl. 
   -Have RA_FOV, DEC_FOV (reconstructed pointing of commanded FOV)
   -Commanded pntg is given by: RA_RQST, DEC_RQST throughout.
   -PTGDIFF keyword value = distance[(RA_FOV,DEC_FOV)-(RA_RQST, DEC_RQST)];
   -PTGDIFFX keyword value = W component of PTGDIFF in arcsec in slit
    frame (along slit).
   -PTGDIFFY keyword value = V component of PTGDIFF in arcsec in slit
    frame (across slit).
   
3. For EXPTYPE = 'pkc or pks' (one single 128x128 image):
   -Post fpg'd (primary) image named "bcd_fp.fits"
   -Have WCS (CRVAL1,2; CD matrix..) with reference pixel in
    blue FOV as defined in cdelt12_distort_full.tbl.
   -Have RA_FOV, DEC_FOV (reconstructed pointing of commanded FOV).
   -Commanded pntg is given by: RA_RQST, DEC_RQST throughout.
   -PTGDIFF keyword value = distance[(RA_FOV,DEC_FOV)-(RA_RQST, DEC_RQST)];
   -PTGDIFFX keyword value = X component of PTGDIFF in arcsec in pixel frame
   -PTGDIFFY keyword value = Y component of PTGDIFF in arcsec in pixel frame
   
CHNLNUMs 1, 2, 3:
-----------------

For all EXPTYPEs (one single 128x128 image):
   -Post fpg'd (primary) image named "bcd_fp.fits"
   -Have RA_SLT, DEC_SLT at position determined from desired "aperture"
    in translation table namelist: apertureNames.tbl
   -Have RA_FOV, DEC_FOV (reconstructed pointing of commanded FOV)
   -Commanded pntg is given by: RA_RQST, DEC_RQST throughout.
   -PTGDIFF keyword value = distance[(RA_FOV,DEC_FOV)-(RA_RQST, DEC_RQST)];
   -PTGDIFFX keyword value = W component of PTGDIFF in arcsec in slit
    frame (along slit). 
   -PTGDIFFY keyword value = V component of PTGDIFF in arcsec in slit
    frame (across slit).