Contraception

Jones, Richard E.

doi:10.1016/b978-0-08-050836-8.50018-4

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Gain and Readout Noise1

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2018

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“…We measured the gain by comparing the signal level to the amount of variation in the flat field and bias images. The gain and readout noise can be measured by Equations ( 1) and (2) (Howell 2000;Jones 2006) with Image Reduction and Analysis Facility's (IRAF's, provided and maintained by NOAO) task findgain. The task findgain uses these equations to calculate the gain and readout noise with two dome flats and two bias frames.…”

Section: Gain and Readout Noisementioning

confidence: 99%

Upgraded photometric system on the 85-cm telescope at Xinglong station

Bai

et al. 2018

Res. Astron. Astrophys.

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The 85-cm telescope at the Xinglong station is a well-operated prime focus system with high science outputs. The telescope has been upgraded since 2014 with new corrector, filters and camera, which are provided by Beijing Normal University (BNU). The filter set is Johnson-Cousins UBVRI system. We report the test results of the new system including the bias, dark current, linearity, gain and readout noise of the CCD camera . Then we derive accurate instrumental calibration coefficients in UBVRI bands with Landolt standard stars in the photometric nights. Finally, we give the limiting magnitudes with various exposure time and signal-to-noise ratio for observers as references.

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Section: Gain and Readout Noisementioning

confidence: 99%

Upgraded photometric system on the 85-cm telescope at Xinglong station

Bai

et al. 2018

Res. Astron. Astrophys.

View full text Add to dashboard Cite

show abstract

Contraception

Cited by 1 publication

References 64 publications

Upgraded photometric system on the 85-cm telescope at Xinglong station

Upgraded photometric system on the 85-cm telescope at Xinglong station

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