N ASA/IPAC   E XTRAGALACTIC   D ATABASE

Help | Comment | NED Home


SIMPLE  =                    T
BITPIX  =                  -32 / -32 = 4-BYTE FLOAT, 16 = 2-BYTE INTEGER
NAXIS   =                    2 / Number of axes
NAXIS1  =                 2554 / Axis 1 size
NAXIS2  =                 1396 / Axis 2 size
EXTEND  =                    T / TAPE MAY HAVE STANDARD FITS EXTENSIONS
ORIGIN  = 'Spitzer Science Center' / Organization generating this FITS file
CREATOR = 'S18.18.0'           / SW version used to create this FITS file
TELESCOP= 'Spitzer '           / Spitzer Space Telescope
INSTRUME= 'IRAC    '           / Spitzer Space Telescope instrument ID
CHNLNUM =                    1 / 1 digit instrument channel number
AOT_TYPE= 'IracMap '           / Observation Template Type
AORLABEL= 'IRAC-lozcl-Coma-deep' / AOR Label
REQTYPE = 'AOR     '           / Request type (AOR, IER, or SER)
EXPTYPE = 'sci     '           / Exposure Type
PRODTYPE= 'IMAGE   '           / Product Type
FOVID   =                   81 / Field of View ID for Commanded Pointing
FOVNAME = 'IRAC_FOV_bwn_3.6&5.8_and_4.5&8.0_for_mapping' / Field of View Name fo
          / PROPOSAL INFORMATION
OBSRVR  = 'Giovanni Fazio'     / Observer Name (Last, First)
OBSRVRID=                    2 / Observer ID of Principal Investigator
PROCYCL =                    1 / Proposal Cycle
PROGID  =                   25 / Program ID
PROTITLE= 'Luminosity Function in Local Clusters' / Program Title
PROGCAT =                   29 / Program Category
          / TIME AND EXPOSURE INFORMATION (from header of first BCD in mosaic)
DATE_OBS= '2003-12-18T05:41:24.736' / Date & time (UTC) at DCE start
UTCS_OBS=        124998084.736 / [sec] DCE start time from noon, Jan 1, 2000 UTC
MJD_OBS =        52991.2370919 / [days] MJD in UTC at DCE start (,JD-2400000.5)
HMJD_OBS=        52991.2363951 / [days] Corresponding Helioc. Mod. Julian Date
BMJD_OBS=        52991.2363787 / [days] Solar System Barycenter Mod. Julian Date
ET_OBS  =         124998148.92 / [sec] DCE start time (TDB seconds past J2000)
SCLK_OBS=        756193327.064 / [sec] SCLK time (since 1/1/1980) at DCE start
SPTZR_X =      18843669.932047 / [km] Heliocentric J2000 x position
SPTZR_Y =     135482593.733148 / [km] Heliocentric J2000 y position
SPTZR_Z =      61373902.283262 / [km] Heliocentric J2000 z position
SPTZR_VX=           -29.618656 / [km/s] Heliocentric J2000 x velocity
SPTZR_VY=             3.314173 / [km/s] Heliocentric J2000 y velocity
SPTZR_VZ=             1.058751 / [km/s] Heliocentric J2000 z velocity
SPTZR_LT=           500.094494 / [sec] One-way light time to Sun's center
AORTIME =                 200. / [sec] Frameset selected in IRAC AOT
COMMENT   Exposure information below is for longest frametime in HDR AOR
COMMENT   and is not representative of short and medium frametime mosaics.
SAMPTIME=                  0.2 / [sec] Sample integration time
FRAMTIME=                 200. / [sec] Time spent integrating (whole array)
EXPTIME =                193.6 / [sec] Int. time per pixel
AFOWLNUM=                   32 / Fowler number of integration
AWAITPER=                  936 / [0.2 sec] Wait period of each integration
ANUMREPS=                    1 / Number of repeat integrations
AORHDR  =                    F / Requested AOT is HDR mode
HDRMODE =                    T / Mosaics taken in High Dynamic Range mode
HDRFRAME= '    long'           / Position in HDR observation
HDRCYCLE=                    1 / Cycle of HDR observation
ABARREL =                    5 / Barrel shift
APEDSIG =                    0 / 0=Normal, 1=Pedestal, 2=Signal
          / TARGET AND POINTING INFORMATION
OBJECT  = 'A1656   '           / Object Name
OBJTYPE = 'TargetFixedSingle'  / Object Type
CRPIX1  =               1277.5 / Reference pixel along axis 1
CRPIX2  =                698.5 / Reference pixel along axis 2
CRVAL1  =           194.952034 / [deg] RA at CRPIX1,CRPIX2
CRVAL2  =            27.981173 / [deg] DEC at CRPIX1,CRPIX2
RADESYS = 'ICRS    '           / International Celestial Reference System
EQUINOX =                2000. / Equinox for ICRS celestial coord. system
CTYPE1  = 'RA---TAN'           / RA---TAN
CTYPE2  = 'DEC--TAN'           / DEC--TAN
CD1_1   = -8.88262065205174E-05 / [deg/pix] Corrected CD matrix element with Ptg
CD1_2   = -0.000141024089871817 / [deg/pix] Corrected CD matrix element with Ptg
CD2_1   = -0.000141024089871817 / [deg/pix] Corrected CD matrix element with Ptg
CD2_2   = 8.88262065205174E-05 / [deg/pix] Corrected CD matrix element with Ptg
PXSCAL1 =           -0.6000012 / [arcsec/pix] Scale for axis 1 at CRPIX1,CRPIX2
PXSCAL2 =            0.6000012 / [arcsec/pix] Scale for axis 2 at CRPIX1,CRPIX2
PA      =            -57.79459 / [deg] Position angle of axis 2 (E of N)
          / PHOTOMETRY
BUNIT   = 'MJy/sr  '           / Units of image data (MJy/sr)
FLUXCONV=               0.1069 / Flux Conv. factor (MJy/sr per DN/sec)
GAIN    =                  3.3 / e/DN conversion
ZODY_EST=           0.08171023 / [MJy/sr] Zodiacal Background Est. (for 1st imge
ISM_EST =         0.0008497896 / [MJy/sr] Interstellar Medium Est. (for 1st imge
SKYDRKZB=             0.040067 / [MJy/sr] Zodiacal Bkgnd Est of subracted skydar
ZODIMIN =           0.08137985 / [MJy/sr] minimum zodiacal background in AOR
ZODIMAX =           0.08177716 / [MJy/sr] maximum zodiacal background in AOR
ZODIMED =           0.08144089 / [MJy/sr] median zodaical background in AOR
MINCOV  =                    0 / minimum coverage in AOR
MAXCOV  =                   17 / maximum coverage in AOR
MEDCOV  =                    5 / median coverage in AOR
          / DATA FLOW KEYWORDS
ORIGIN0 = 'JPL_FOS '           / Site where mosaic was created
CREATOR0= 'J5.2.3  '           / SW system that created raw-FITS file
AORKEY  =              3859456 / AOR or IER key. Astro. Obs Req/Instr Eng Req
DS_IDENT= 'ads/sa.spitzer#0003859456' / Data Set Identification for ADS/journals
PAONUM  =                  230 / PAO Number
CAMPAIGN= 'IRAC003600'         / Campaign
          / PROCESSING HISTORY
TOTALBCD=                   30 /  Total number of BCD's used in this mosaic
HISTORY hdrupd8           v.  1.6  A70821,  updated  12/02/10 at 14:08:29
HISTORY hdrupd8           v.  1.6  A70821,  updated  12/02/10 at 14:08:31
HISTORY FPGen                     v.         1.26, ran Thu Dec  2 14:08:39 2010
COMMENT   Controlled data files (CDFs) used:
COMMENT   w_bqd_mopex_mask.nl, fileID = 3192009
COMMENT   Photons in Well = Flux[photons/sec/pixel] * FRAMTIME
COMMENT   DN per pixel = Flux[photons/sec/pixel] / GAIN * EXPTIME
COMMENT MUXSTRPCORR Module Version 1.3 corrected image created
COMMENT Thu Dec  2 13:36:32 2010
COMMENT Overlap Consistency Correction  Version 2.2 Module image created
COMMENT Thu Dec  2 13:39:54 2010
COMMENT MOSAIC_INT Module Version 6.2 image created
COMMENT Thu Dec  2 13:41:00 2010
COMMENT MOSAIC_REINT Module Version 3.2 image created
COMMENT Thu Dec  2 13:53:32 2010
COMMENT MOSAIC_COADD Module Version 4.8 image created
COMMENT Thu Dec  2 14:02:58 2010
COMMENT MOSAIC_COMBINE Module Version 2.4 image created
COMMENT Thu Dec  2 14:04:32 2010
COMMENT CROTA2 = 57.794590 /[deg] Orientation of axis 2 (W of N, +=CW)
COMMENT CDELT1 = -0.000167 /[deg/pix] Scale for axis 1
COMMENT CDELT2 = 0.000167 /[deg/pix] Scale for axis 1
COMMENT      del file: add.txt
COMMENT      add file: add.txt
HISTORY hdrupd8           v.  1.6  A70821,  updated  12/02/10 at 14:08:41
COMMENT      add file: comment_file.txt
COMMENT
COMMENT Photometry dervied from this image was used in Brown et al. (2014), An
COMMENT Atlas of Spectral Energy Distributions from the UV to the Mid-Infrared,
COMMENT to constrain and verify the SED of NGC 4889.
COMMENT
COMMENT The Brown et al. (2014) SEDs and images are available from
COMMENT http://dx.doi.org/10.5072/03/529D3551F0117
COMMENT
COMMENT If you use this image, please reference the original papers in
COMMENT your publications (and do not only reference Brown et al. 2014).
COMMENT
COMMENT The original or working title for this image was
COMMENT SPITZER_I1_3859456_0000_7_E8346707_maic.fits
COMMENT
COMMENT This Spitzer IRAC image was sourced from or produced using
COMMENT data from the Spitzer Heritage Archive
COMMENT http://sha.ipac.caltech.edu/applications/Spitzer/SHA/
COMMENT
END

Back to NED Home