Description
Description
The Celestron Off-Axis Guider is an essential astroimaging accessory for long focal length telescopes that require the most accurate guiding possible. The Celestron Off-Axis Guider uses a prism to intercept a small portion of the telescopes focal plane (outside the field of view of the main imaging camera) to locate a guide star. Any movement seen by the guide star will be the exact same movement seen by the imaging camera. Guiding this way will correct for tracking errors, as well as opto-mechanical errors or flexure. The result: better astroimages with pinpoint round stars.
Features
Most accurate way to guide improved accuracy compared to using a separate guide scope
12.5mm multi-coated prism with optimized performance for maximum reflectivity and illumination to the autoguider
Fixed-orientation helical focuser for easy, smooth and accurate autoguider focus
48mm clear aperture supports full frame cameras without vignetting
Includes adapters with the correct spacing for DSLR cameras, Nightscape CCD and other popular astroimaging cameras
Ideal for Schmidt- Cassegrain and EdgeHD telescopes
Specifications
Helical Focuser Travel 8 mm
Telescope Connection M42 T-thread, M48, and SCT/EdgeHD
Autoguider Connection M42 T-thread, and standard 1.25" adapter
Camera Connection M42 T-thread, and M48
Weight 18 oz (510 g)
Clear Aperture 48mm (1.89")