Celestron Off Axis Guider OAG for Astronomy imaging Dobsonian the cover can also be

the cover can also be tuned inside out (reverse) revealing a camo printed outer so that your gear fits into the surrounding environment

The CEM40 also uses iOptron's ultra-quiet

and there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements

Lifetime transferable warranty

All internal surfaces threaded and blackened for no reflections

Celestron Off Axis Guider OAG for Astronomy imaging Dobsonian the cover can also beOVERVIEW Most accurate way to guide improved accuracy compared to using a separate guide scope. 12. 5mm multi coated prism with aluminised backing 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