SIMPLE = T /image conforms to FITS standard BITPIX = -32 /bits per data value NAXIS = 2 /number of axes NAXIS1 = 2348 / NAXIS2 = 2348 / EXTEND = T /file may contain extensions DATE = '2006-04-24T00:55:10' / UTC date when file last modified COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy COMMENT and Astrophysics', volume 376, page 359; bibcode 2001A&A...376..359H COMMENT COMMENT Project identification COMMENT ---------------------- PROJNAM = 'SINGG ' / Project name PROPTITL= 'Survey for Ionization in Neutral Gas Galaxies' / Project title PROPID = '2000-0032' / NOAO proposal ID PROJPI = 'Meurer, G.R.' / Project Principle Investigator RUNID = 'Run03 ' / Run identification COMMENT COMMENT Telescope Parameters COMMENT -------------------- OBSERVER= 'C.Smith ' / Observers OBSERVAT= 'CTIO ' / Origin of data TELESCOP= 'CTIO 1.5 meter telescope' / Specific system INSTRUME= 'cfccd ' / cassegrain direct imager DETECTOR= 'Site2K_6' / Detector (CCD type, photon counter, etc.) OBJECT = 'J1337-29' / Name of the object observed FILENAME= 'J1337-29_Rsub_ss.fits' / FITS file name RA = '13:37:02.34' / right ascension (telescope) DEC = '-29:52:06.0' / declination (telescope) ZD = 5.10000000000 / zenith distance (degrees) HA = '-00:23:23.5' / hour angle (H:M:S) ST = '13:13:42.0' / sidereal time AIRMASS = 1.00400000000 / airmass FILTER1 = '6568 ' / Filter in wheel one FNAME1 = '6568/30 4x4 CSmith' / Full name of filter in wheel1 FILTER2 = 'dia ' / Filter in wheel two FNAME2 = 'Diaphragm' / Full name of filter in wheel2 FILTERS = '6568 dia' / Filter positions UT = '08:19:13.2' / UT of TCS coords COMMENT COMMENT Parameters from image combine COMMENT ----------------------------- IMTYPE = 'net ' / Type of image DATE-OBS= '2001-02-14T07:54:48.3 ' / Date and time of start of first image DATEEND = '2001-02-14T08:57:53.100 ' / Date and time of end of last image NCOMBINE= 2 / Number of combined images EXPTIME = 1800.00000000 / Total exposure time [seconds] WEXPTIME= 603.216000000 / Weighted exposure time [seconds] BUNIT = 'counts/sec' / Units of image BUFFER = 150 / Size of edge buffer [pixels] POSREF = 'obj2097tr.fits' / Positional reference image FLUXREF = 'obj2094tr.fits' / Flux reference image MASKFILE= 'J1337-29_Rsub.pl.fits ' / Pixel count file PRED00 = 'J1337-29_R.fits' / Input filename #0 PRED01 = 'J1337-29_6568.fits' / Input filename #1 PRED02 = ' ' / Input filename #2 PRED03 = ' ' / Input filename #3 PRED04 = ' ' / Input filename #4 PRED05 = ' ' / Input filename #5 WPRED00 = -0.0217200000000 / Scale factor #0 WPRED01 = 1.00000000000 / Scale factor #1 WPRED02 = 0.00000000000 / Scale factor #2 WPRED03 = 0.00000000000 / Scale factor #3 WPRED04 = 0.00000000000 / Scale factor #4 WPRED05 = 0.00000000000 / Scale factor #5 PHOTQUAL= 0.00518038000000 / RMS of time-corrected scaling CNTRAT1 = 0.0217200000000 / Continuum ratio (kernel) CNTRAT2 = 0.0210956000000 / Continuum ratio ECNTRAT2= 0.00234502000000 / Continuum ratio RMS COMMENT COMMENT Sky measurement parameters COMMENT -------------------------- ISOPHX = 1202.61000000 / Isophote center X [pixels] ISOPHY = 1154.13000000 / Isophote center Y [pixels] BRIGHTX = 1203.00000000 / Brightness peak X [pixels] BRIGHTY = 1154.00000000 / Brightness peak Y [pixels] SKYAPRA = 204.247660000 / RA of sky aperture [degrees] SKYAPDEC= -29.8727420000 / Declination of sky aperture [degrees] SKYAPA1 = 436.541000000 / Semi-major axis of inner sky aperture [arcsec] SKYAPA2 = 794.845000000 / Semi-major axis of outer sky aperture [arcsec] SKYAPAB1= 1.01866000000 / Axial ratio (A/B) of inner sky aperture SKYAPAB2= 1.01016000000 / Axial ratio (A/B) of outer sky aperture SKYAPPA1= 91.2857000000 / Position angle of inner sky aperture [degrees] SKYAPPA2= 91.2857000000 / Position angle of outer sky aperture [degrees] SKYBOX = 35 / Box size used by box2boxbg [pixels] COMMENT COMMENT Image measurement results COMMENT ------------------------- SKYLEV = -0.000240335000000 / box2box sky level SKYSIG = 0.0345786000000 / pixel-to-pixel sky RMS SKYSIGBX= 0.00447267000000 / box-to-box sky RMS SKYSUB = 1 / sky subtraction complete? SEEING = 1.84242000000 / Seeing [arcsec] DATAMIN = -9.90692 / Minimum pixel value DATAMAX = 88.9261 / Maximum pixel value COMMENT COMMENT World Coordinate System COMMENT ----------------------- CTYPE1 = 'RA---TAN' / CTYPE2 = 'DEC--TAN' / CRPIX1 = 1161.35340000 / CRPIX2 = 1219.57740000 / CRVAL1 = 204.253520000 / CRVAL2 = -29.8650110000 / CD1_1 = -0.000119993750000 / CD1_2 = 6.73896690000E-08 / CD2_1 = 7.96760510000E-08 / CD2_2 = 0.000120008260000 / EQUINOX = 2000.00 / RADECSYS= 'FK5 ' / WCSDIM = 2 / WAT0_001= 'system=image' / WAT1_001= 'wtype=tan axtype=ra' / WAT2_001= 'wtype=tan axtype=dec' / XPIXSIZE= 0.432000000000 / Pixel size in X (arcsec/pix) YPIXSIZE= 0.432000000000 / Pixel size in Y (arcsec/pix) LTV2 = -1184.50100000 / LTM2_1 = 1.00000000000 / LTM1_2 = 1.00000080000 / COMMENT COMMENT Photometric Calibration Keywords COMMENT -------------------------------- FILTNAME= '6568/28 ' /Filter name PHOTPLAM= 6575.51 /Filter pivot wavelength [Angstrom] PHOTGW = 36.1230 /Filter Gauss. equiv. bandpass FWHM [Angstrom] PHOTRW = 31.1704 /Filter rectangular equiv. bandpass [Angstrom] AQFILT = 31.6398 /A_file * Q_(filt,gal) [Angstrom] NIIFRAC = 0.122071000000 /Estimated [NII]6548+6583/total count ratio NIIRAT0 = 0.350000000000 /Assumed intrinsic [NII]6583/Halpha flux ratio PROFMOD = 'GAUSSIAN ' /Adopted Halpha profile model PHOTMTRC= ' ' /Observed in photometric conditions? PHOTFLUX= 7.57051000000E-16 /Unit response [erg/cm^2/DN] MAGSYS1 = ' ' /Magnitude system MAGZPT1 = 0.00000 /Zero-point magnitude COMMENT COMMENT Data Release information COMMENT ------------------------ RELVER = 1.00000 / Release version RELDATE = '2006-04-24' / Release Date HDRVER = 1.00000 / Header version PIXVER = 1.00000 / Pixel version COMMENT COMMENT This image was created for SINGG - the Survey for Ionization in COMMENT Neutral Gas Galaxies. SINGG is an H-alpha and R band CCD imaging COMMENT survey of galaxies selected from the HI Parkes All Sky Survey (HIPASS; COMMENT Meyer et al. 2004, MNRAS). This image comprises part of SINGG Release COMMENT 1.0 (SR1.0). Details of the SINGG survey and SR1.0 can be found in COMMENT Meurer et al (2006, ApJS, in press; astro-ph/0604444). The reduction COMMENT of the SR1.0 images includes basic CCD processing (bias level COMMENT subtraction, bias image subtraction, flat fielding), image COMMENT registration, combining of images with CR rejection, and flux COMMENT calibration. Some images obtained with the 6568/28 filter had a model COMMENT of an extended diffuse scattered-light feature subtracted. Continuum COMMENT (usually R band) subtraction is performed after convolving the image COMMENT with the best seeing with a kernel to match that having the worst COMMENT seeing. Details of the data reduction and analysis can be found in COMMENT Meurer et al. (2006). Details of the SINGG survey can be found at COMMENT http://sungg.pha.jhu.edu/ . COMMENT COMMENT The World Coordinate System (WCS) in the images were set by matching COMMENT positions of roughly 100 sources in the R or continuum image to the COMMENT U.S. Naval Observatory A2.0 database yielding a typical rms accuracy of COMMENT 0.4 arcsec (one pixel). The photometric calibration of the images was COMMENT performed by observations of spectrophotometric standards, yielding COMMENT an estimated accuracy of 0.02 mag, except for images obtained with the COMMENT 6568/28 filter, which have an estimated photometric accuracy of 0.04 COMMENT mag. COMMENT COMMENT SR1.0 represents the best effort reduction and analysis by the SINGG COMMENT team. The data is made available to the public free of charge on an COMMENT *as is* basis without warranty of any kind, either expressed or COMMENT implied. If you use SINGG images in your research please make the COMMENT following acknowledgement in any publications that result: "This COMMENT research made use of images provided by the Survey for Ionization in COMMENT Neutral Gas Galaxies (Meurer et al. 2006) which is partially supported COMMENT by the National Aeronautics and Space Administration (NASA)." END |