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    Re: Using a theodolite as a (solar) sextant
    From: Mike L
    Date: 2008 Feb 15, 12:39 -0800

    Thomas, thank you very much for the link. It is useful in two ways: 1.
    it tells me that such a device exists and is worth looking for, and 2.
    It tells me what it is called so I've a good chance of finding someone
    who sells them!
    
    Mike
    
    On Feb 14, 6:32 pm, Thomas Kleemann  wrote:
    > 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-Theodol...
    >
    > HTH,
    >         Thomas.
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