Telescope design is a deeply personal endeavor. Few amateurs duplicate exactly the work of another. Instruments are nearly always customized to fit available space, or to use an existing mirror.
Exciting things are being done with TCT's today, but the design task is far from trivial when three or more mirrors are involved. Fortunately for us, two prolific designers have made available to the amateur community their private caches of well-corrected, but unbuilt & unpublished designs for others to build, or to build upon.
Link to John's designs -- (unavailable as of this time)
Link to Sandro's designs -- (unavailable as of this time)
Curator: Hartmut Frommert
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