I'd like to get a better handle on exactly where my refractors are folding their colors and what spectral lines a given hue infocus or outfocus points to. Anybody know of an app where one can key in a specific wavelength, e.g. 656 nm C or 486 nm F, and the screen displays that exact color? I'm having a time of it trying to noodle out the meaning of specific magentas or green-blues a wavelength in or out. This is also a toe in the water in the big pond of learning spectroscopy. Thanks, Doug Bullis
Stargazing since 1954
Six refractors 80mm to 150mm
Four reflectors 150mm to 310mm
