Hi guys.
Just a quick question as I can't spend any considerable amount of money on a star spectroscope a la ''L200'' or ''Rainbow Optics'', ''Star Analyser'' etc.
I've found myself playing with blank DVD's, CD's both reflective and transmissive (with aluminium backing removed)
Some interesting results, but transmissive (as in Rainbow Optics)does not seem to provide a close to the source spectra that's bright enough??
Any ideas on a cheap way to be able to directly view some star spectra using DVD's or CD's?
Help appreciated
