Question about Celestron Advanced C9 1/4-S 11045 (555 x 235mm) Telescope

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Loose Visual back / Baffle tube - Celestron SCT 9.25

When I attach any component ie; adapter, diagonal, extender etc to the visual back, the whole tube rotates with the equipment. This causes the eyepiece and all to flop down while observing at an angle. It is evident that the baffle tube / visual back base has worked it's way loose. How can I re-tighten this? If dismantling the scope is required is there a locking nut or grub screw responsible? Any recommendations would be helpful.
Regards, David
Sydney, Australia

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Hi David, the visual back should thread on to the rear cell of the OTA but on the visual back there should be a screw to lock in you 1.25" accessories.

Posted on Nov 05, 2009

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Do you have a "diagonal" with this small telescope? It looks like this:
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http://www.celestron.com/

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http://www.agenaastro.com/

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www.scopestuff.com

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1 Answer

Need to know what diagonal and eyepiece to use


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Orion telescope center has knowledgeable staff who can help you choose a good set of eyepieces and accessories to use with your C90.

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