From XEphem running the Soft03Cmt database of 20121002, for the date and time of
the observation:

RA:   08:16:04.25
Dec:  27:48:13

2012-09-30 UT
09:45 UTC


Measured:

RA:   08:16:04.4
Dec:  27:48:12.9



Header listing for HDU #1:
SIMPLE  =                    T / This is a FITS file
BITPIX  =                  -32 /
NAXIS   =                    2 /
NAXIS1  =                 4341 / NUMBER OF ELEMENTS ALONG THIS AXIS
NAXIS2  =                 4355 / NUMBER OF ELEMENTS ALONG THIS AXIS
EXTEND  =                    T / This file may contain FITS extensions
EQUINOX =        2000.00000000 / Mean equinox
RADECSYS= 'ICRS    '           / Astrometric system
CTYPE1  = 'RA---TAN'           / WCS projection type for this axis
CUNIT1  = 'deg     '           / Axis unit
CRVAL1  =   1.240236398594E+02 / World coordinate on this axis
CRPIX1  =   2.171000000000E+03 / Reference pixel on this axis
CD1_1   =  -1.490238500992E-04 / Linear projection matrix
CD1_2   =   0.000000000000E+00 / Linear projection matrix
CTYPE2  = 'DEC--TAN'           / WCS projection type for this axis
CUNIT2  = 'deg     '           / Axis unit
CRVAL2  =   2.775143762442E+01 / World coordinate on this axis
CRPIX2  =   2.178000000000E+03 / Reference pixel on this axis
CD2_1   =   0.000000000000E+00 / Linear projection matrix
CD2_2   =   1.490238500992E-04 / Linear projection matrix
EXPTIME =   1.300000000000E+03 / Maximum equivalent exposure time (s)
GAIN    =   0.000000000000E+00 / Maximum equivalent gain (e-/ADU)
SATURATE=   4.736993370384E+04 / Saturation Level (ADU)
COMMENT
SOFTNAME= 'SWarp   '           / The software that processed those data
SOFTVERS= '2.19.1  '           / Version of the software
SOFTDATE= '2010-09-03'         / Release date of the software
SOFTAUTH= 'Emmanuel BERTIN <bertin@iap.fr>' / Maintainer of the software
SOFTINST= 'IAP  http://www.iap.fr' / Institute
COMMENT
AUTHOR  =                      / Who ran the software
ORIGIN  = 'aurora  '           / Where it was done
DATE    = '2012-10-02T06:43:05' / When it was started (GMT)
COMBINET= 'MEDIAN  '           / COMBINE_TYPE config parameter for SWarp
COMMENT
COMMENT  Propagated FITS keywords
COMMENT
COMMENT  Axis-dependent config parameters
RESAMPT1= 'LANCZOS3'           / RESAMPLING_TYPE config parameter
CENTERT1= 'ALL     '           / CENTER_TYPE config parameter
PSCALET1= 'MEDIAN  '           / PIXELSCALE_TYPE config parameter
RESAMPT2= 'LANCZOS3'           / RESAMPLING_TYPE config parameter
CENTERT2= 'ALL     '           / CENTER_TYPE config parameter
PSCALET2= 'MEDIAN  '           / PIXELSCALE_TYPE config parameter
END



Header listing for HDU #1:
SIMPLE  =                    T / file does conform to FITS standard
BITPIX  =                  -32 / 32 bit floating point data pixel
NAXIS   =                    2 / number of data axes
NAXIS1  =                 4096 / length of data axis 1
NAXIS2  =                 4096 / length of data axis 2
EXTEND  =                    T / FITS dataset may contain extensions
COMMENT   FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
BZERO   =                    0 / offset data range
BSCALE  =                    1 / scaling factor
EXPTIME =                 100. / exposure time (seconds)
DATE-OBS= '2012-09-30T09:41:11.678' / date of observation (UT)
IMAGETYP= 'Light Frame'        / image type
TARGET  = 'Comet ISON'         / target
INSTRUME= 'grizb   '           / instrument
CCD-TEMP=               -10.06 / temperature (C)
FILTER  = ' (5) bb (500-1100)' / filter
TELESCOP= 'CDK20N  '           / telescope
DATE    = '2012-10-02T06:11:27' / file creation date (YYYY-MM-DDThh:mm:ss UT)
HISTORY   Dark subtracted
HISTORY   Image file ison_00168.fits
HISTORY   Dark file  dark_100s.fits
HISTORY   Flat corrected
HISTORY   Image file ison_00168_d.fits
HISTORY   Flat file  flat_bb.fits
END