Quote:
Originally Posted by Saturnine
The scope is looking good and I'm impressed by your workmanship and attention to detail, looking forward to a first light report.
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Thanks Jeff!
Quote:
Originally Posted by toc
The rabbit is impressed and so am I 
Kind of a left field question, but how hard are SCT corrector plates to make? I dont think they can be hand ground can they? |
The Netherlands Dwarf rabbit is my supervisor.
The SCT corrector plates are practical to make only in a series production scenario because of the fancy/expensive tooling required.
The plate usually gets sucked onto concentric supports by vacuum, so that the top side is deformed in such a way as to allow grinding and polishing to a flat surface. One the vacuum is released the surface will spring back to form the complex curve required to correct spherical aberation.