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collimation assist tool
Another great benefit of ultra-wide eyepieces is the ease with which you can gaze
because using averted vision puts the image on a part of your eye that is more sensitive to light
Optolong L-Pro (L-Professional) filter is designed to improve the visibility of various deepsky objects
Two Primary Mirror Fans with Battery Pack
ZWO ASIAIR Mount for William Optics Telescopes 92 degrees eyepiece series collimation assist toolEasily mount your ZWO ASIAIR unit (Plus, Mini, Pro or any other accessory you would like to secure!) on your William Optics refractor with our Asiair Mount. It is compatible with the following William Optics models: Gran Turismo GT71, Gran Turismo GT81, Fluorostar FLT91, ZenithStar ZS73 and ZenithStar ZS81 (we also have another model for RedCat 51 and ZenithStar ZS61 see our other items). Made from durable heat resistant plastic, it offers a
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