XTENSION= 'BINTABLE          ' /
BITPIX  =                    8 /
NAXIS   =                    2 /
NAXIS1  =           NNNNNNNNNN / Number of objects in the table
NAXIS2  =                  118 / Number of bytes per row 
PCOUNT  =                    0 /
GCOUNT  =                    1 /
TFIELDS =                   27 /
EXTNAME = 'ALT_FIT_PARAMS    ' /
COMMENT
COMMENT   This HDU applies to all detections that have been analyzed
COMMENT   with the IPP alternative PSF fitting procedure. 
COMMENT   Note that the IPP_IDET must be unique within a file so as
COMMENT   to allow matching up sources between the PSF matching and
COMMENT   either the alternative PSF fits for P2, P4S, and P4D
COMMENT   detections or the extended source fits to the
COMMENT   Image Stack/Cumulative Sky detections.
COMMENT
TTYPE1  = 'IPP_IDET          ' / IPP detection identifer index
TUNIT1  = '                  ' /
TFORM1  = 'J                 ' /
TTYPE2  = 'ALT_MODEL_ID      ' / Alternate ALT fit model index
TUNIT2  = '                  ' /
TFORM2  = 'I                 ' /
TTYPE6  = 'RA_ALT            ' / RA from ALT fit
TUNIT6  = 'DECIMAL DEGREES   ' /
TFORM6  = 'D                 ' /
TTYPE7  = 'DEC_ALT           ' / DEC from ALT fit
TUNIT7  = 'DECIMAL DEGREES   ' /
TFORM7  = 'D                 ' /
TTYPE8  = 'RA_ALT_SIG        ' / Sigma of ALT fit RA
TUNIT8  = 'ARCSECONDS        ' /
TFORM8  = 'E                 ' /
TTYPE9  = 'DEC_ALT_SIG       ' / Sigma of ALT fit DEC
TUNIT9  = 'ARCSECONDS        ' /
TFORM9  = 'E                 ' /
TTYPE20 = 'ALT_QF            ' / ALT coverage/quality factor
TUNIT20 = '                  ' /
TFORM20 = 'E                 ' /
TTYPE21 = 'CAL_ALT_MAG       ' / Calibrated ALT magnitude
TUNIT21 = 'MAG               ' /
TFORM21 = 'E                 ' /
TTYPE23 = 'ALT_PARM_1        ' / ALT model parameter 1
TUNIT23 = '                  ' /
TFORM23 = 'E                 ' /
TTYPE24 = 'ALT_PARM_2        ' / ALT model parameter 2
TUNIT24 = '                  ' /
TFORM24 = 'E                 ' /
TTYPE25 = 'ALT_PARM_3        ' / ALT model parameter 3
TUNIT25 = '                  ' /
TFORM25 = 'E                 ' /
TTYPE26 = 'ALT_PARM_4        ' / ALT model parameter 4
TUNIT26 = '                  ' /
TFORM26 = 'E                 ' /
TTYPE27 = 'ALT_PARM_5        ' / ALT model parameter 5
TUNIT27 = '                  ' /
TFORM27 = 'E                 ' /
CHECKSUM=                      / Header checksum
DATASUM =                      / Data section checksum
END
