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2020-06-16
Foucault test image of 45cm F/4 reflector.
This mirror is a sandwich mirror from Habble optics. A friend tested it when I removed the mirror to change the cell. There is a small hole in the middle of the mirror, but it seems to be overcorrected overall. I found that it can be used for F/4 planets.
Foucault test image of 45cm F/4 reflector.
This mirror is a sandwich mirror from Habble optics. A friend tested it when I removed the mirror to change the cell. There is a small hole in the middle of the mirror, but it seems to be overcorrected overall. I found that it can be used for F/4 planets.