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The all-in-one Lumicon Cassegrain Easy-Guider for SCTs is one of the most powerful astrophotography accessories on the market today, greatly extending the photographic capabilities of your Schmidt-Cassegrain telescope.
The sturdy Cassegrain Easy-Guider features a unique, patented, radial adjustment for finding bright, off-axis guide-stars. The Lumicon Cassegrain Easy-Guider also includes rotational adjustments, along with a large off-axis prism, both of which combine to simplify guide-star selection. The multi-coated, 50mm focal reducing lens yields 100% edge-to-edge field illumination, high-contrast, and pinpoint star images across a 35mm frame. The reducing lens in its standard position provides a 0.65 reduction (F/10 optics become F/6.5). It can also be moved farther from the camera, yielding an approximate F/5 ratio. Exposure times with the Lumicon Cassegrain Easy-Guider are thus 2 to 4 times shorter, and the image size is correspondingly reduced.
Additionally, the filter compartment is located behind the pick-off prism on the camera side of the Cassegrain Easy-Guider. This allows you to guide using unfiltered starlight - only the camera's light is filtered - a real bonus!
Note: The following accessories are required for photography: A prism diagonal; a guiding eyepiece (or auto-guider); and a camera-specific T-ring. These may be user-supplied, or purchased separately from Lumicon.
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