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
Question About Meed And $ellestron Scopes

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Robert May on April 9, 2001 21:47:04 UTC

Actually, Meade and Celestron make thier scopes for less than what the Japanese have been able to do it.
The secret is to automate the construction of the whole scope and sell a lot of them. The primary mirrors are spherical which is an easy shape to make. The correctors are built on special fixures and the surfaces that need to be made on them is again a spherical. The secondary is the worst part and, since it's not large, it's a lot easier to make non spheric than any other part. The rest of the scope is mechanical and is easy to do anywhere.
I wouldn't guarantee that the system is 1/10th wave on every system but they are actually doing a very good job on such a complex system because they are doing so many that the new workers soon learn what is necessary to do the job right. Needless to say, the secondary makers are the most experienced ones, the ones that have already done the work on the other parts of the scope's optics. Finally, they do test a lot to insure that the instruments are all up to the required quality and when you get a bad one, it's usually bad because of shipping rather than basically bad optics.

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