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    Re: Using a theodolite as a (solar) sextant
    From: Thomas Kleemann
    Date: 2008 Feb 14, 19:32 +0100

    Isonomia schrieb:
    
    >
    > Is there any optics I can buy to put on the front of the telescope to
    > view at 90degree?
    >
    
    There are prisms for that special need.
    I saw one recently.
    Please have a look at ebay.de
    Article number 370022965721 :
    
    
    http://cgi.ebay.de/Carl-Zeiss-Steilsichtprisma-Eyepiece-Prism-Theodolit_W0QQitemZ370022965721QQihZ024QQcategoryZ55808QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
    
    HTH,
        Thomas.
    
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