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Transit of Mercury in the Spicule Layer. Phil took this great image with his Quantum 6 Scope, Solar Spectrum etalon and PGR Camera.

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Thread of Coronado diagonal

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bart1805
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Thread of Coronado diagonal

Post by bart1805 » Wed Apr 10, 2019 9:46 pm

Hi everyone,
Does anybody know the thread size of the (black) part of the coronado diagonal? So the part where the blocking filter is mounted. I would like to ditch the diagonal and use it as a straight through.
Thanks!
Bart.

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