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Making a Busack-Riccardi-Honders Astrograph
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10-08-2017, 08:03 PM
Stefan Buda
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Join Date: Jul 2013
Location: Melbourne, VIC
Posts: 823
Hi Pat,
That sounds very promising. Please let me know if you find someone willing to do it. The refractive index of BK7 is not all that different from the ophthalmic plastics, so the coatings could be very similar I guess.
Stefan
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