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- Sep 29, 2013
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I did some research and have not found the specifications of G2 glass lens . Is it the glass or the coating that gives G@ glass lens its property?
Please understand I grind and polish my own telescope mirrors and am not afraid to take on grinding a small lens. Now the coating I don't think I can do.
So has anyone measured the focal lenght of some of these lens. :thinking:
Edit : I'm back , I found some references about focal lenght and diameter of lens. I found two sizes ,6 mm about and 9 mm about . The thread said one could get a better beam with one when the focal lenth was a couple of MMs longer . Why not use laeger lens like 12 mm or more ? What focal lenght would be goo to start with ? Thanks for your input ,
Please understand I grind and polish my own telescope mirrors and am not afraid to take on grinding a small lens. Now the coating I don't think I can do.
So has anyone measured the focal lenght of some of these lens. :thinking:
Edit : I'm back , I found some references about focal lenght and diameter of lens. I found two sizes ,6 mm about and 9 mm about . The thread said one could get a better beam with one when the focal lenth was a couple of MMs longer . Why not use laeger lens like 12 mm or more ? What focal lenght would be goo to start with ? Thanks for your input ,
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