I'd be very interested. Also, if you offer kits of both types - I'd be interested in one of each. I would like the speakers to address if there is any freeware/shareware that might be helpful in eyepiece design - also perhaps what books might be good references - and books to not waste money on. Thanks, Dale.
-----Original Message----- From: Chuck Hards [mailto:chuckhards@yahoo.com] Sent: Wednesday, January 29, 2003 1:30 PM To: utah-astronomy@mailman.xmission.com Subject: Re: [Utah-astronomy] Eyepiece seminar
I'll start seeing what optics are available, and gathering materials. To keep costs down, we'll probably build a Plossl or true symmetrical. If I can find some inexpensive triplets, the ortho can be explored. I may be able to offer kits of both designs, wait and see.
These "kits" will cost me about $15 each; is everyone who wants to participate able to pony-up fifteen bucks? I will make no profit on this endeavor, but must cover costs.
Although we probably will NOT use wood for a housing, optically we will be building something similar to the "Homemade eyepieces" I described in S&T a couple of years ago (Feb. 00).
Let me know if there are any particular questions you would like the speaker(s) to address.
Thanks!
C.
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Dale, I'll have at least 2 types, with multiples available if I can find lenses. I'll have a book list also, but I only know of 2 websites, and no commercial software, other than the ZEMAX and OSLO-type general-purpose programs, IIRC. Unless you plan on grinding your own lenses, you really don't need software for eyepiece design. It's simple, as we'll see. (I did mention Gary Liptrot's spreadsheet in another post, perhaps when he reads his email, he'll make it available to everyone. I can't release my copy without his permission.) Naglers (I almost typed "Naugles"...man, I miss those egg-bean burritos after an all-nighter!) and other hybrid designs are a world apart from the "classical" eyepiece. These are more akin to camera lenses, and out of reach of the non-glassworking amateur. BUT, that said, you can get closer than you think, and can actually make an eyepiece with better DEFINITION, using off-the-shelf surplus lenses. Chuck --- Dale Hooper <Dale.Hooper@sdl.usu.edu> wrote:
I'd be very interested. Also, if you offer kits of both types - I'd be interested in one of each. I would like the speakers to address if there is any freeware/shareware that might be helpful in eyepiece design - also perhaps what books might be good references - and books to not waste money on.
Thanks, Dale.
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participants (2)
-
Chuck Hards -
Dale Hooper