4 Jun
2008
4 Jun
'08
10:27 p.m.
Kurt, what's the ruling on the Rainbow optics grating? I have a number of ruled gratings; perhaps one or more might be suitable for a home-brewed spectroscope. On Tue, Jun 3, 2008 at 9:26 PM, Canopus56 <canopus56@yahoo.com> wrote:
Hopefully, armed with that chart, I'll really know what to look for and what I'm looking at when using the Rainbow Optics grating at the eyepiece. Turns out it is not that difficult once you know what to look for.