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Most accurate way to guide improved accuracy compared to using a separate guide scope 12.5mm multi-coated prism with optimized performance Fixed-orientation helical focuser for easy, smooth and accurate autoguider focus 48mm clear aperture supports full frame cameras without vignetting
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.
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") |
Free Shipping | No |
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