Making a 33 cm f4.8 mirror on the Mirror-o-Matic 7: testing for astigmatism with Bath interferometer
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- It is important that there's no relevant astigmatism in the mirror before starting figuring. For that I use the Bath interferometer. If there's any relevant astigmatism present - for me more then about 1/15 lamda P-V wavefront, it should be removed first
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