Query Beijing-Arizona Sky Survey DR1 Images

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Position Constraints

Rectangle min ra dec (max 10 square degrees)
max ra dec
Cone center ra dec radiusarcsec
solve name:
Proximity list of ra,dec[,radius] (max 100 obj)
 Default radius
arcsec
or Upload File (Sample)
None No position constraint
 

Output

Format:
 

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[ single_epoch_images ] Search only in this table
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column		 name value sample description
minmax
id 7037200451 
fitsname images/20150114/p7037g0045_1.fits Fits file name of each CCD image
datetime 2015-01-15 02:57:43.808000 observation JD date in (XXXX-XX-XX);observation JD time in (XX:XX:XX.XXXXXX)
ccd 1 CCD number
object 48471 object name (same as the tile name)
filter g filter name
exptime 100.0 exposure time in second
airmass 1.412 airmass when the image was taken
gain 1.375 average gain in e/ADU
rdnoise 8.11 average rdnoise in e
nx 4096 x-axis image size
ny 4032 y-axis image size
pixscale 0.454 pixel scale in arcsec
ra_lb 80.632074551 R.A. in degree (J2000) of the image center
dec_lb 74.0038443215 Decl. in degree (J2000) of the image center
ra_lt 80.6882314739 R.A. in degree (J2000) of the image center
dec_lt 74.5090194808 Decl. in degree (J2000) of the image center
ra_rt 78.7662407761 R.A. in degree (J2000) of the image center
dec_rt 74.5207802287 Decl. in degree (J2000) of the image center
ra_rb 78.761662743 R.A. in degree (J2000) of the image center
dec_rb 74.0132544357 Decl. in degree (J2000) of the image center
ra 79.7163119193 R.A. in degree (J2000) of the image center
dec 74.2646698944 Decl. in degree (J2000) of the image center
sky 7.47 sky background in e/s
skyrms 0.299 sky background rms in e/s
skyb 21.9688 sky brightness in mag/arcsec²
seeing 3.4121 seeing in arcsec
ccdzpt 25.8668 zeropoint in AB mag for 1e/s
zptrms 0.025 zeropoint RMS
nmatch 1011 matched object number for calculating zeropoints
ccdzpta 25.868 zeropoint for amplifier with pixel range in [1:2016,1:2048]
zptrmsa 0.0303 above zeropoint RMS
nmatcha 244 matched object number for the above zeropoint
ccdzptb 25.8539 zeropoint for amplifier with pixel range in [2017:4032,1:2048]
zptrmsb 0.0232 above zeropoint RMS
nmatchb 257 matched object number for the above zeropoint
ccdzptc 25.8769 zeropoint for amplifier with pixel range in [1:2016,2049:4096]
zptrmsc 0.0196 above zeropoint RMS
nmatchc 266 matched object number for the above zeropoint
ccdzptd 25.8677 zeropoint for amplifier with pixel range in [2017:4032,2049:4096]
zptrmsd 0.0228 above zeropoint RMS
nmatchd 244 matched object number for the above zeropoint
depth_point 22.8457 point source depth estimated by the S/N formula assuming a Gaussian profile
depth_extend 22.788 extended source depth estimated by the S/N formula assuming a exponential profile with effective radius of 0.45""
extension 0 extension number of the fits image
mjd 57037.12342 Modified Julian day
imq 1 image quality
astraerr 0.126230920622 external R.A. error in arcsec
astdecerr 0.165900983689 external decl. error in arcsec
ebv 0.137591 E(B-V) at the image center from SFD98
survey bass the survey name