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: Celestron Radial Guider Schmidt-Cassegrains: Telescope Guiders And Wedges: Camera & Photo. Find great deals for Celestron off Axis Radial Guider Shop with confidence on eBay!. Old Celestron Radial Guider # – posted in Celestron NexStar: I inherited an old style Celestron Radial Guider # (OAG). After much.

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With this, you can adapt the OAG perfectly to the diameter of the camera sensor and the illumination of your telescope. Sometimes the long base or the 1,25″ nosepiece holder for the guide cam instead of a T thread may not be best for given setup.

Adaption of CCD cameras is no problem – adapters cen be found in the accessory recommendations. Compared to a guidwr guide scope using OAG requires more preparation. Log in to add this product to your watchlist. The distance from the prism to both cameras must be the same – so both cameras focus at the same point.

Celestron off Axis Radial Guider | eBay

This OAG is sold with few T-threaded extenders, T-threaded 2″ nosepiece adapter and even T-threaded short extender with locking screw to lock a guide cam in given position. This accessory makes it possible to simultaneously photograph and guide through celestrin optical tube assembly of your telescope. Be the first and write about your experience now. It the star has a shape of very thin stroke – you can slightly defocus the celewtron camera to ease the work of guiding software.


The prism is attached slightly higher than in the Radial guider without the pad.

Specifically for use in prime focus, deep-sky imaging or astrophotography with Schmidt-Cassegrain telescopes, the Radial Guider is compact and sleek in design. Then use the scope to focus the main camera. Enter new zip code to refresh estimated delivery time. Celestron Radial Guider Product no.: The guide head may be loosed by loosening two hex screws on the OAG base that hold the head second image.

OAG is also lighter than a guide scope. Astro books Astro-books for beginners Observations Astrophotography Others. It cflestron be found here: The Celestron off-axis guider affers special features: Due to the many adapters, it is not always clear which part sits on which place, so looking into the manual is helpful.

Questions Service Advice Contact My account. Fuider costs Newsletter Blog. Sometimes it’s available at low prices in some shops. Update Unrecognized Zip Code. When it’s done check the guide camera and focus it by moving it up or down in the guide head until you get sharp image.

Celestron Radial Guider and Brightstar Advanced Off Axis Guider

See any errors on this page? Monday to Friday Radial guider may be adapted for other catadioptric scopes or even refractors that have enough backfocus.

If it’s on the edge you can also try to tilt the prism by using a knob located below the head. Business to Business Affiliate program Retailers. T-thread and standard 1. Maybe there is also a way to lower the prism didn’t checked that deeply.


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Small prism gathers some light from the telescope outside the field of view of the imaging camera and directs it on to the guide camera sensor. The guide head has a 1,25″ nosepiece holder.

Celestron Off-Axis Guider for EdgeHD and SC telescopes

This product is no longer stocked and therefore cannot be purchased until further notice. Be the first to review this item. You can take it off to make the prism collect more light should work with most sensor sizes without celesrron into the FOV. No reviews by eKomi at this time. The radial guider is compatible with Celestron’s C5, C8, C9, C11 and C14 telescopes and comes with a unique prism angle adjustment screw.

It has nice range of rotation around its axis, and without the pad the guide camera gets good amount of light. After sharpness is achieved, the focuser is locked. Three T2 distance rings with Each movement of this star corresponds exactly the movement that is seen by the main camera.