Signal-to-noise calculator for CCD photometry at WIYN 0.9m
Aug 13, 2013
Dec 28, 2016
This form allows you to calculate the signal-to-noise
ratio for a star observed with the WIYN 0.9-m telescope.
You can vary the parameters and find out what sort
of results to expect.
- WIYN 0.9-m telescope at Kitt Peak
- reflectivity of primary from 2012 measurements,
assumes reflectivity of secondary is the same
- standard Johnson-Cousins filters
- the star has the same spectrum as Vega, so it will give
inaccurate results for very cool, red stars.
- sky values for Kitt Peak, assuming 3-day moon
- extinction coefficients for Kitt Peak, from Direct Imaging manual
If you want to see the calculations themselves,
the Perl source code to the calculator.
Or, if you just want to see the equations governing the
this article by Steve Howell.
Last updated Dec 28, 2016 by Michael Richmond.