SHOC Signal to Noise Calculator

Please fill out the following parameters in black, to return the SNR, exposure time, or observable magnitude (each calculated given the other two values).
---> The calculations assume SHOC 2 (X-6448) camera, 2.4x preamp gain, V filter, and a circular aperture of radius 3x the seeing FWHM.
Results are a guideline, since observations are strongly effected by atmospheric conditions.

Observing parameters

Telescope: 1.9m 1.9m (focal reducer) 1.0m Lesedi

Mode: Conventional Electron Multiplying

Amplifier: 1MHz 3MHz

EM Gain:

Sky brightness: Dark Gray Bright

Seeing (FWHM; arcsec):

Binning: 1x1 2x2 3x3 4x4 5x5 6x6 8x8 10x10 12x12 16x16

Recommended binning (Nyquist):

Platescale (arcsec/binned pixel):

Field of View (arcmin):

Calculations

Please choose the value to be calculated :

• Signal to noise ratio
• Exposure time
• Limiting magnitude

Target magnitude:

Exposure time (sec):

Signal to noise ratio achievable: