HOSTING A TOTAL OF 318 FORMULAS WITH CALCULATORS

## $\frac{s}{\sqrt{s+b+d+n{r}^{2}}}$

The values required for this formula are : s = total nebula signal, b = total background signal, d = dark current, r = red noise from bias frame and n = number of sub-exposures

ENTER THE VARIABLES TO BE USED IN THE FORMULA

Similar formulas which you may find interesting.