"Fixing" a lens to high precision?

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bokemon Regular Member • Posts: 430
"Fixing" a lens to high precision?

Hello,

Does anybody know of a place that has the right equipment to align a lens to very high precision? I have an old Nikon 300mm F2.8 that is sharp enough for regular photography on my Z6, but using my monochrome astro camera, I can see some small defects. (Image center has a little bit of coma. Outer corners have more coma, but not radially symmetric) I called a few camera repair places, but they only claim to "have the tools to fix the lens", but I was never able to talk to a technician as to how accurately they can fix it.

I can fix the problem 80% by using a front aperture stop down to about 85mm.

Yeah yeah, why not buy a telescope.

 bokemon's gear list:bokemon's gear list
Olympus OM-D E-M10 II Panasonic G85 Nikon Z6 Panasonic Lumix G Vario 7-14mm F4 ASPH Sigma 105mm F2.8 EX DG Macro +15 more
Nikon Z6
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