Porthole Mirror

Porthole Mirror
The construction of a reflecting telescope?

I would like to build a telescope, I hope to build one with a 14-inch parabolic mirror as the primary mirror. I grind the mirror for two reasons: 1) I will enjoy the experience 2) No I have £ 1250 to spend on a mirror so I have to get 14-inch optical quality glass. I was thinking about using glass porthole, I heard you have to be 25 mm thick is this correct. There is also a site I could with the participation of or in any place you could pick one up from?

Larry is right, you are not satisfied with the results. Bull's-eye glass, where there are about the quality of glass you need for high quality optical mirror. Join a local astronomy Astronomical Society or club. Will reaches loan you can borrow until you save enough money to buy a good margin on their own.

admin posted at 2011-5-30 Category: Mirrors

5 Responses Leave a comment

  1. #1ig @ 2017-3-10 22:04

    This piece of writing will assist the internet people for
    building up new weblog or even a weblog from start to end.

  2. #2Augusto de Arruda Botelho @ 2017-3-11 00:18

    I every time used to study piece of writing in news papers but now as I am a user
    of net therefore from now I am using net for content, thanks to web.

  3. #3Ima @ 2017-3-17 08:47

    Do you mind if I quote a couple of your posts
    as long as I provide credit and sources back to your webpage?

    My website is in the exact same area of interest
    as yours and my visitors would definitely benefit from a lot
    of the information you provide here. Please let me know
    if this ok with you. Thank you!

  4. #4Steven @ 2017-3-19 01:14

    Somebody essentially lend a hand to make critically articles I’d state.
    That is the first time I frequented your web page and so far?
    I surprised with the analysis you made to make this actual put up amazing.

    Wonderful task!

  5. #5Mildred @ 2017-3-22 08:00

    Hi there to all, how is the whole thing, I think every one is getting
    more from this site, and your views are nice in favor of new people.

Leave a Reply

(Ctrl + Enter)