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Old 23-10-2018, 05:49 PM
astro744
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astro744 is offline
 
Join Date: Apr 2007
Posts: 1,244
Quote:
Originally Posted by raymo View Post
Fair enough; I did ask what was different about a Paracorr, and now I know.
cheers raymo
No worries, raymo. I just had a closer look at the collar that screws into the draw tube and I now know why the stop is there. It isn't because a stop was needed or intended as a safety feature but because extra thickness was needed to accommodate the male thread that goes into the draw tube. If it were possible to leave at 2" I.D. I'm sure it would have been done. My electronic vernier battery is flat so I couldn't measure how close to 2" it is but it does only need a minimal turn down on a lathe.

Anyway, I have digressed here although it is still relevant to comparing GSO with SW. There are many other factors to consider and the focuser is just one of them.

To the OP; whatever you choose, enjoy!
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