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Celestron 1mm C Mount Adapter for Straight Through Finders

Celestron 1mm C Mount Adapter for Straight Through Finders


The Celestron 1mm T Thread Adapter for Straight Through Finders connects C / CS mount cameras to Celestron 9 x 50 Finders with 1mm pitch rear finder thread. See below for more info. Price includes worldwide postage.

In stock


The Celestron 1mm C Mount Adapter for Straight Through Finders connects cameras with C / CS mount to Celestron 9 x 50 Finders with 1mm pitch rear finder thread. Most Celestron finders are the same as SkyWatcher, with 11 fine threads cut into the rear of the finder tube.
However some are different and we now have 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.


9 x 50 finders are in effect 50mm telescopes with a focal length of around 180mm.
“Thoughts on Auto-Guiding” explains how they work well as guidescopes.
Our tests have confirmed that guiding is successful at focal lengths of 1500mm and more though “off axis guiders” are recommended for telescopes prone to mirror movement, especially larger models, and where exposures are lengthy.

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 setup and the wide field of view guarantees finding suitable guide stars.

Adapters are near parfocal with visual focus of the finder.


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UK DeliveryPrices include postage to all mainland UK addresses, except where indicated. Larger items may attract a surcharge for off shore or remote locations.When your item is dispatched, you will receive an email from our shopping cart saying ‘Your order is complete’We use Royal Mail and Courier services, whichever is more appropriate for the weight and value of your order.International Delivery:Website prices DO NOT include International delivery costs unless specified.We are happy to ship to most countries. We use a variety of Royal Mail and Courier services, depending on the weight, size, value and urgency of your order.Place your order via the shopping cart and you will be advised by email of additional shipping charges prior to the processing and dispatch of your order.Or simply email us for details of shipping charges to your country before you place your order.Some items which are particularly popular with overseas purchasers already display, in the purchase menu, combined purchase and shipping costs to various regions adjusted for UK VAT (sales tax) where necessary.If you reside outside the European Union, please check with your customs authorities for details of any import taxes, duties and other charges that may be imposed on entry to your country. We have no control over these.

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