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Forgot to say my original idea still holds.This lens will be available for loan to IIS members.Once you have enjoyed wide field with good optics at large relative aperture photographically, you can't go back.Will make a mount to hold the lens securely.I hope to make a universal T mount adapter so anyone with any camera can use it.I don't know who has an astro cooled CCD but that should be easy to adapt as well.
Bert
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