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Vintage C90 Information Web Page
Last post 01-01-2009 01:54 PM by Oriontaage. 0 replies.
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  • 01-01-2009 01:54 PM

    Vintage C90 Information Web Page

    Hi,

    I recently purchased a vintage (orange tube) C90. The telescope arrived with a loose light baffel in the OTA and thanks to some great advice from this forum, I was able to repair the problem. I later contacted Celestron's Technical Support with a question about the optical back threading, and they were not able to answer my questions about the vintage C90. I then realized how little on-line information is available regarding the orange tube Celestron C series telescopes. I decided to create a webpage to consolidate what information I found and currently I have a first draft on-line. This web page documents what I have learned regarding spare parts, manuals, and simple repair procedures. I have also included basic information about optical aberration and the MAK optical system. I hope this is information that can be of use to other C90 owners:

    http://www.astronomyasylum.com/c90.html

    A related issue is that I have recently constructed a homebuilt GoTo GEM for the C90; if anyone is interested, a post on this mount can be found on the ATM Forums page.

    Bill

     

    Signature
    Homebuilt 10 inch. Truss Tube Newtonian
    Homebuilt 497 Autostar Powered GoTo Mount
    Celestron C8 (Classic Orange Tube Model)
    Celestron C90 (Classic Orange Tube Model)
    Logitech QuickCam VC Webcam
    DSI Pro ccd Camera with RGB Filter Set
    Homebuilt 3.3 m Diameter Domed Observatory
    Visit my goto telescope building webpages at
    http://www.astronomyasylum.com
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