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Where Is ETX 90EC Focal Plane Positioned?

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Posted by guglielmino on February 11, 2009 10:50:44 UTC

I'd like to use my ETX 90EC for spectroscopy. I have an optical fiber spectrometer and I need to place it exactly on the focal plane. Can anybody tell me where it is? I can't find this answer in manuals.
Thanks
Michela

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