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C9.25 HD corrector plate

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#1 MidniteCowboy

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Posted 03 December 2020 - 12:19 PM

Hello.  Can someone tell me if the s/n etched into the corrector plate should face inside the tube or to the outside?

Thanks



#2 markb

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Posted 03 December 2020 - 12:29 PM

I belive they read correctly viewed from the outside.

 

Placement is at the 3 o'clock position viewed from the outside as well, the side opposite the focuser knob. Same for the secondary sharpie stripe on the side of the glass. These alignments were done at the factory to make the optical and mechanical (baffle tube slider) axes coincident, important for an SCT.


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#3 Dynan

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Posted 03 December 2020 - 12:29 PM

Outside at 3 o'clock position looking at the corrector end of the scope.



#4 MidniteCowboy

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Posted 03 December 2020 - 12:33 PM

Thanks to you guys for help. I learned about the 3 O'clock position for CP and secondary when I bought the Starizona sorbothane gasket. I hope it will solve my problem of secondary movement.




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