William Optics 1.25" 90 degree Erecting Prism

[ozzysmb]

Hi,

I got the William Optics 1.25" 90 degree Erecting Prism and must say its great upgrade from stock diagonal I got with my Skywatcher Mak 127.

 

Feature this diagonal has is helical focuser with 15mm of travel. Tho, its not the feature I need really.

 

Question is , is there a way to lock it in one position, so it will not turn ? 

 

On picture you can see diagonal and I marked with red arrow the small hole present, maybe for locking ? Tho, I didnt got additional screw for it.

 

 

[jonathan]

Did you miss out the picture?

Usually a focuser will come with a focus locking screw, maybe ask the vendor if it's supposed to come with one, if it isn't then check with the manufacturer to see if it's a feature that can be made use of.

Edited November 3, 2020 by jonathan

[Lee_P]

Following this because I have the same question! FYI my diagonal didn't come with an extra screw either.