Most Celestron finders are the same as Sky-Watcher, and have 11 fine threads cut into the rear of the finder tube.

However some are different and we now offer this adapter for those Celestron finders with 8 coarser (1mm) rear finder threads. Simply remove the eyepiece and holder to check.

Please ask before purchase if you are unsure

Tests have confirmed that guiding is successful at focal lengths of 1500mm and more, see this article.

Stability is excellent if screws are tightened firmly and cables tied up.

Using the finder as a guide-scope reduces the weight and complexity of your imaging set-up and the wide field of view guarantees finding suitable guide stars.

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