CAIN SNR calculator

Instrument	Filter: J H K K short K cont Paschen Beta Fe II H2 (1-0) Bracket Gamma H2 (2-1) CO (2-0) Campo: N (Narrow) W (Wide)	Exposure Time S/N Nº exposiciones:
Object	Object: Point Extended	Apparent Magnitude:
Sky	Sky Brightness: Airmass: Seeing(FWHM): Extinction:	(B or D for Bright or Dark)
Graphical output	S/N vs. Exptime     S/N vs. Magnitude     Peak vs. Exptime