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Re: [ATM] ATM Digest, Vol 46, Issue 26
> ------------------------------> > Message: 7> Date: Wed, 24 Oct 2007 11:12:34 -0700> From: "David Sleeter" <d.sleeter@roadrunner.com>> Subject: [ATM] 2" 45 Degree Erecting Prism?> To: <atm@atmlist.net>> Message-ID: <GAEAIKBHKIGEOBPBDNHNOEDODBAA.d.sleeter@roadrunner.com>> Content-Type: text/plain; charset="iso-8859-1"> > Hi again Folks:> > Per my previous post and your helpful suggestions, I'm making progress on my> cheap-public-terrestrial telescope concept. I've settled on an inexpensive> 80-82mm. objective and a 32-35mm. eyepiece. To create an erect image, if I> use a 1-1/4" eypiece, I can mate it with an inexpensive Celestron 45 degree> erecting diagonal ($39.00), and that would provide a nice view and a> comfortable viewing angle.> > But for a SPECTACULAR VIEW, I'd rather use a 2" 32mm. eyepiece. The problem> is that I'd need a 2" 45 degree erecting diagonal, and the only ones I've> found so far are made by top-of-the-line manufacturers like William Optics> and Televue, and they sell for $150 to $200. Does anyone know of someone who> sells an inexpensive(i.e. made in China) version of a 2" 45 degree diagonal?> > Another option would be for me to just buy the prism and make the rest of it> myself. Though I've never taken one apart, they LOOK like the prism inside> might be a simple BK7 wedge with a 22-1/2 degree angle between the faces. Am> I correct in my guess, and if so, does anyone know where I can buy one?> > David Sleeter/Moreno Valley, CAZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
David, I would suggest you go to Surplus Shed for many items you are looking for.
This is not an advertisment just common sense.... surplusshed.com
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