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Altair "152" DERF, Ed Astle

Altair "152" DERF

Altair "152" DERF, Ed Astle

Altair "152" DERF

Description

Altair DERF on the Skywatcher 150 f/8.
It blocks everything but 40nm of Ha, significantly reducing the energy going into the scope.
You can't even light a match at the focus point.

Comments

Histogram

Altair "152" DERF, Ed Astle

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