SIMPLE = T BITPIX = 16 / 8 unsigned int, 16 & 32 int, -32 & -64 real NAXIS = 2 / number of axes NAXIS1 = 765 / fastest changing axis NAXIS2 = 510 / next to fastest changing axis BSCALE = 1.0000000000000000 / physical = BZERO + BSCALE*array_value BZERO = 32768.000000000000 / physical = BZERO + BSCALE*array_value DATE-OBS= '2018-06-05T02:18:20' / YYYY-MM-DDThh:mm:ss observation start, UT EXPTIME = 45.000000000000000 / Exposure time in seconds EXPOSURE= 45.000000000000000 / Exposure time in seconds SET-TEMP= -10.000000000000000 / CCD temperature setpoint in C CCD-TEMP= -9.7878172678115689 / CCD temperature at start of exposure in C XPIXSZ = 9.0000000000000000 / Pixel Width in microns (after binning) YPIXSZ = 9.0000000000000000 / Pixel Height in microns (after binning) XBINNING= 1 / Binning factor in width YBINNING= 1 / Binning factor in height XORGSUBF= 0 / Subframe X position in binned pixels YORGSUBF= 0 / Subframe Y position in binned pixels READOUTM= 'Normal ' / Readout mode of image FILTER = 'Sloan r''' / Filter used when taking image IMAGETYP= 'Light Frame' / Type of image OBJCTRA = '19 26 31' / Nominal Right Ascension of center of image OBJCTDEC= '+25 11 29' / Nominal Declination of center of image OBJCTALT= ' 23.2592' / Nominal altitude of center of image OBJCTAZ = ' 75.5864' / Nominal azimuth of center of image OBJCTHA = ' -5.3081' / Nominal hour angle of center of image PIERSIDE= 'WEST ' / Side of pier telescope is on SITELAT = '39 00 07' / Latitude of the imaging location SITELONG= '-76 02 39' / Longitude of the imaging location JD = 2458274.5960648148 / Julian Date at start of exposure JD-HELIO= 2458274.5991874412 / Heliocentric Julian Date at exposure midpoint AIRMASS = 2.5285987346521743 / Relative optical path length through atmospher FOCALLEN= 1600.0000000000000 / Focal length of telescope in mm APTDIA = 178.00000000000000 / Aperture diameter of telescope in mm APTAREA = 24884.556101560593 / Aperture area of telescope in mm^2 EGAIN = 2.5199999809265137 / Electronic gain in e-/ADU SWCREATE= 'MaxIm DL Version 5.12' / Name of software that created the image SBSTDVER= 'SBFITSEXT Version 1.0' / Version of SBFITSEXT standard in effect OBJECT = ' ' TELESCOP= ' ' / telescope used to acquire this image INSTRUME= 'SBIG ST-7 Dual CCD Camera' OBSERVER= ' ' NOTES = ' ' FLIPSTAT= ' ' SWOWNER = 'Elizabeth Warner' / Licensed owner of software END