ZWO 30F5 Guide Scope

Ensure proper tracking for long-exposure astrophotography with this 30F5 Guide Scope from ZWO. Recommended for telescopes with apertures up to 750mm, the f/5 scope features an apochromatic lens with three elements that include extra-low dispersion (ED) glass. The guide scope accepts ZWO ASI guiding and imaging cameras, either screwed onto the M42 x 0.75 thread or with a 1.25" nosepiece dropped into the focuser-type tube. The aperture is 30mm and the focal length is 150mm. The helical focuser provides 20mm of travel and is fitted with thumbscrews to lock in the focus.