- Joined
- Apr 26, 2010
- Messages
- 4,175
- Points
- 83
Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please
I am also interested, I am looking to make a tunable HeNe.
Though chances are these are coated for argons, not the 600nm+ spectrum. I would probably need a littrow prism..
I use a 1000 lines mm it gives a 5 inch spread at 5 feet. The star ones will give you all the lines, but will be close together. The 13,500 lm looks like a star grating. I do have a cross dicro cube that will show one line at a time as turn it in front of the Argon.
I am also interested, I am looking to make a tunable HeNe.
Though chances are these are coated for argons, not the 600nm+ spectrum. I would probably need a littrow prism..
Last edited: