Back to Home

ATM Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Amateur Telescope Making | Post
Login

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
RE: Building My First Telescope

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Robert May on May 29, 2000 20:52:05 UTC

For figuring out what size secondary you want to use (there is no exact size for any particular basic design in this field) go find a copy of NEWT25.EXE (for the PC) on the web. It will go through all of the calculations for you and show you what is important - you just figure out which is important to you.
As far as Orion Optics are concerned, they are good middle of the road optics sets and very rarely do you get some bad optics from them. For a first scope, they will do very nicely and the only way to get better optics for the price is to do them yourself which, while it`s not all that hard to do, could be daunting to someone who hasn`t done that sort of stuff yet.
Sorry for the late answer but I just got back from RTMC which was wonderful as always.

Follow Ups:

    Login to Post
    Additional Information
    Google
     
    Web www.astronomy.net
    DayNightLine
    About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
    Unless otherwise specified, web site content Copyright 1994-2021 John Huggins All Rights Reserved
    Forum posts are Copyright their authors as specified in the heading above the post.
    "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
    are trademarks of John Huggins