Celestron Radial Guider Schmidt-Cassegrains

Other products by Celestron

Product Details

• Product Dimensions: 4 x 3 x 2 inches ; 2 pounds
• Shipping Weight: 1 pounds (View shipping rates and policies)
• Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
• ASIN: B00009XVI1
• Item model number: 94176
• Average Customer Review: 2.5 out of 5 stars  See all reviews (2 customer reviews)
• Amazon.com Sales Rank

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  Camera & Photo > Accessories > Telescope Accessories > Guiders

• Date first available at Amazon.com: September 8, 2003

Product Description

Product Description

Specifically for use in prime focus, deep-sky imaging or astrophotography with Schmidt-Cassegrain telescopes, the Radial Guider is compact and sleek in design. This accessory makes it possible to simultaneously photograph and guide through the optical tube assembly of your telescope. The Radial Guider also eliminates the problem of differential flexure, because you're both guiding and photographing through the telescope. The Radial Guider is compatible with Celestron's C5, C8, C9¼, C11 and C14 telescopes and comes with a unique prism angle adjustment screw. It must be used with a guiding eyepiece, camera T-Ring and drive corrector (dual axis preferred). Primarily for use with catadioptric telescopes, but also works on refractor telescopes having adequate back focus. This guider is a tremendous improvement over conventional off-axis guilders. Not only is the angle of the prism tunable, but it also maintains a fixed rigid camera orientation while still offering users the freedom to move the guiding eyepiece radially about 135°.

Customer Reviews

Most Helpful Customer Reviews

1 of 1 people found the following review helpful:

2.0 out of 5 stars Radial Guider, April 22, 2008

By	Paul Garland (El Paso, Texas USA) - See all my reviews

Amazon Verified Purchase

Nice concept. I own 5 telescopes including one schmidt cassegrain. This won't fit or work with any of them. So I wasted my money buying it. But it sure seems like a neat concept...too bad.

3.0 out of 5 stars Nice add-on to your deep sky photoset, November 9, 2008

By	Vladimir Rozhankovsky - See all my reviews

The small side prism delivers substantially more luminiscent imaging of the fainter stars than one could actually expect. However, manual guiding might be a real challenge, especially, should your option is limited by Alt-Az GoTo mount. Therefore I suggest to get prepared to study auto-guiding software and test your RS-232 port communication. Also, in order to use Canon EOS 300...450 models, you need to obtain additional extender ring, because the radial guider's winding-in will be obstructed by the dimentions of the built-in EOS flash.