Exposure Time Calculator for Telescopes on Xinglong Observatory (v1.0)
Telescope
{{x}}
Source information:
Mag
Terminal parameters:
Photometry
Short Slit
Long Slit
Band
{{x}}
Airmass
Slit
{{x}}
Grism
{{x}}
Slit
{{x}}
Grism
{{x}}
Calculate:
Signal-to-Noise Ratio (SNR)
==>
<==
Exposure Time (ExpT)
SNR
==> ExpT ≈
{{expt_calc}}
(sec)
SNR ≈
{{snr_calc}}
<==
ExpT
(sec)
Estimating based on tests on clear nights and FWHM ~ 2.0"
Spectrum data from
Zhao Yong, et al, 2018, RAA, 18(9), 110
Please report problems to Dr. Jie Zheng (jiezheng(at)nao.cas.cn)