SIMPLE  =                    T                                                  BITPIX  =                  -32 / -32 = 4-BYTE FLOAT, 16 = 2-BYTE INTEGER        NAXIS   =                    2 / Number of axes                                 NAXIS1  =                 2293 / Axis 1 size                                    NAXIS2  =                  943 / 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-0000 - SDSS_J115132.93-022222.0' / AOR Label                    REQTYPE = 'AOR     '           / Request type (AOR, IER, or SER)                EXPTYPE = 'sci     '           / Exposure Type                                  PRODTYPE= 'IMAGE   '           / Product Type                                   FOVID   =                   74 / Field of View ID for Commanded Pointing        FOVNAME = 'IRAC_Center_of_4.5&8.0umArray' / Field of View Name for Cmd. Ptg.                                                                                              / PROPOSAL INFORMATION                                                                                                                                OBSRVR  = 'David Hogg'         / Observer Name (Last, First)                    OBSRVRID=                11791 / Observer ID of Principal Investigator          PROCYCL =                    5 / Proposal Cycle                                 PROGID  =                20120 / Program ID                                     PROTITLE= 'A Search for PAH Emission in Extremely Low Luminosity Galaxies' / ProPROGCAT =                   30 / Program Category                                                                                                                         / TIME AND EXPOSURE INFORMATION (from header of first BCD in mosaic)                                                                                  DATE_OBS= '2006-01-05T19:02:29.096' / Date & time (UTC) at DCE start            UTCS_OBS=        189759749.096 / [sec] DCE start time from noon, Jan 1, 2000 UTCMJD_OBS =        53740.7933923 / [days] MJD in UTC at DCE start (,JD-2400000.5) HMJD_OBS=        53740.7933518 / [days] Corresponding Helioc. Mod. Julian Date  BMJD_OBS=        53740.7933298 / [days] Solar System Barycenter Mod. Julian DateET_OBS  =         189759814.28 / [sec] DCE start time (TDB seconds past J2000)  SCLK_OBS=        820955203.615 / [sec] SCLK time (since 1/1/1980) at DCE start  SPTZR_X =       3558050.934741 / [km] Heliocentric J2000 x position             SPTZR_Y =     137495224.323919 / [km] Heliocentric J2000 y position             SPTZR_Z =      62021793.634075 / [km] Heliocentric J2000 z position             SPTZR_VX=           -29.728903 / [km/s] Heliocentric J2000 x velocity           SPTZR_VY=             0.536691 / [km/s] Heliocentric J2000 y velocity           SPTZR_VZ=            -0.204382 / [km/s] Heliocentric J2000 z velocity           SPTZR_LT=           503.276255 / [sec] One-way light time to Sun's center       AORTIME =                  30. / [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=                  30. / [sec] Time spent integrating (whole array)     EXPTIME =                 26.8 / [sec] Int. time per pixel                      AFOWLNUM=                   16 / Fowler number of integration                   AWAITPER=                  118 / [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 =                    4 / Barrel shift                                   APEDSIG =                    0 / 0=Normal, 1=Pedestal, 2=Signal                                                                                                           / TARGET AND POINTING INFORMATION                                                                                                                     OBJECT  = 'SDSS_J115132.93-022222.0' / Object Name                              OBJTYPE = 'TargetFixedSingle'  / Object Type                                    CRPIX1  =                1147. / Reference pixel along axis 1                   CRPIX2  =                 472. / Reference pixel along axis 2                   CRVAL1  =           177.886232 / [deg] RA at CRPIX1,CRPIX2                      CRVAL2  =            -2.372484 / [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   = -6.93270782775964E-05 / [deg/pix] Corrected CD matrix element with PtgCD1_2   = -0.000151563996735676 / [deg/pix] Corrected CD matrix element with PtgCD2_1   = -0.000151563996735676 / [deg/pix] Corrected CD matrix element with PtgCD2_2   = 6.93270782775964E-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      =            -65.42011 / [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=            0.1614679 / [MJy/sr] Zodiacal Background Est. (for 1st imgeISM_EST =          0.002168999 / [MJy/sr] Interstellar Medium Est. (for 1st imgeSKYDRKZB=             0.039785 / [MJy/sr] Zodiacal Bkgnd Est of subracted skydarZODIMIN =            0.1611274 / [MJy/sr] minimum zodiacal background in AOR    ZODIMAX =            0.1614939 / [MJy/sr] maximum zodiacal background in AOR    ZODIMED =            0.1612978 / [MJy/sr] median zodaical background in AOR     MINCOV  =                    0 / minimum coverage in AOR                        MAXCOV  =                    5 / maximum coverage in AOR                        MEDCOV  =                    4 / median coverage in AOR                                                                                                                                                                                                                                                                                   / DATA FLOW KEYWORDS                                                                                                                                  ORIGIN0 = 'JPL_FOS '           / Site where mosaic was created                  CREATOR0= 'J5.3    '           / SW system that created raw-FITS file           AORKEY  =             14113536 / AOR or IER key. Astro. Obs Req/Instr Eng Req   DS_IDENT= 'ads/sa.spitzer#0014113536' / Data Set Identification for ADS/journalsPAONUM  =                 1619 / PAO Number                                     CAMPAIGN= 'IRAC007500'         / Campaign                                                                                                                                                                                                                 / PROCESSING HISTORY                                                                                                                                  TOTALBCD=                   10 /  Total number of BCD's used in this mosaic                                                                                     HISTORY hdrupd8           v.  1.6  A70821,  updated  12/22/10 at 12:06:10       HISTORY hdrupd8           v.  1.6  A70821,  updated  12/22/10 at 12:06:11       HISTORY FPGen                     v.         1.26, ran Wed Dec 22 12:06:15 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 Wed Dec 22 11:53:13 2010                                                COMMENT Overlap Consistency Correction  Version 2.2 Module image created        COMMENT Wed Dec 22 11:57:36 2010                                                COMMENT MOSAIC_INT Module Version 6.2 image created                             COMMENT Wed Dec 22 11:59:28 2010                                                COMMENT MOSAIC_REINT Module Version 3.2 image created                           COMMENT Wed Dec 22 12:02:31 2010                                                COMMENT MOSAIC_COADD Module Version 4.8 image created                           COMMENT Wed Dec 22 12:04:37 2010                                                COMMENT MOSAIC_COMBINE Module Version 2.4 image created                         COMMENT Wed Dec 22 12:05:18 2010                                                COMMENT CROTA2 = 65.420110 /[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  12/22/10 at 12:06:16       COMMENT      add file: comment_file.txt                                         COMMENT                                                                         COMMENT This beta version image may change once Brown et al. (2014) is accepted.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 UM 461         .                     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_14113536_0010_5_E8631928_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                                                                                                                                                                                                                                                                                                                                                                      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