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Old 17-01-2020, 04:26 PM
Imme (Jon)
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Join Date: Aug 2017
Location: Kyneton
Posts: 839
Quote:
Originally Posted by Merlin66 View Post
As Jon says, it's 6.5mm from the T thread body connection.
See:
https://astronomy-imaging-camera.com...asi1600mm-cool

The mating thread on the corrector is M56 x 0.75 - Ideally a 50mm spacer with female M56 on one end and a female M42 T thread at the other.
Don't know where you'll get a "special" like that......
Joshua....that's where you get a special and very well made adapter like that for a reasonable price.

.....if he can pull himself away from building the new Ob's
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