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

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
RE: Getting Back Into It

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Bill on August 1, 2000 12:38:22 UTC

Be prepared to pay extra $$ for a 1/10 wave mirror (peak to valley). Most commercial mirror making companies don`t promise much better than 1/4 wave, peak-valley. But don`t let the price fool you either. High price doesn`t always mean high quality and vice-versa. I bet there are some used high quality 10 inchers for sale out there at a very good price. Also, in the back of Sky & Telescope magazine there are usually ads for mirror making companies.

Before forking over the bucks, make sure you understand what you are buying in terms of quality. "1/10 wave" may really mean that the mirror is only 1/5 wave, peak-valley. If this is a bit confusing, check out this this site for the many ways mirror quality can be defined:

Good Luck,

Follow Ups:

    Login to Post
    Additional Information
    About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
    Unless otherwise specified, web site content Copyright 1994-2024 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