MEGACAM Exposure Time and Signal-to-Noise Ratio Calculator

Compute source type
filter mAB photometry aperture
sky background airmass transparency seeing "
e-time (s)
radius " flux frac (%)  obj saturation (s) sky saturation (s)
Because of the (normal) degradation of the telescope mirror's coating, to estimate the required time, please use the ETC then multiply the results by 1.17; if instead you want to calculate the signal to noise you hope to reach, please multiply the ETC results by 0.9. July 2016.
© 2015 Canada-France-Hawaii-Telescope Corporation Collaborative effort of Simon Prunet, Pascal Fouque, and Billy Mahoney