I tested this set on f/6 apo refractors and f/5 to f/6 Newtonian reflectors, concentrating on comparing on-axis and off-axis sharpness. Pros: Very comfortable eye relief; superb optics. At 564 grams even with its 2-inch adapter tube, Stellarvue's Optimus is the lightest of the 100 set, a consideration for balancing smaller telescopes. Though if you want the best, this is it. They're just too big and heavy and more of a novelty view for me, whereas my 82's are quite comfortable. I do not wear glasses while observing and a 70-degree field of view is very comfortable. Introducing the new Stellarvue Ultra Wide Angle eyepiece series. You would recognize the names of the OEMs if I told you. It can fit either a 2-inch or 1.25-inch focuser but requires only 1.25-inch filters. Hmmm, looks like those four focal lengths are the only ones they make, at least for now. In short, I found it uncomfortable to use. Personally, I find the 70-72 degree range perfect for my needs and taste; and there are plenty of offerings in that range with adequate effective eye relief for eyeglass wearers. Theres a new alternative for the Celestron NexStar SE and NexStar Evolution series tripod a short, foldable tabletop tripod. I'm hoping they will be sharp to the edge at f/7. Kunming maybe? STELLARVUE OPTIMUS 20MM 100deg 2.0" 9-ELEMENT EYEPIECE Description Technical Specs Extended Information Stellarvue Optimus 20mm 100deg 2" 9-element eyepiece--lighter and sharper than its competition, this eyepiece redefines "wide" field. For planets 30-40 deg. You currently have javascript disabled. Bottom Line: A superb and compact top-class eyepiece. Edited by 25585, 06 March 2023 - 09:04 AM. Unfortunately EP focal lengths are rarely exactly accurate and in the case of the axioms they were obviously paying homage to the original 23mm axiom and 24mm was close enough to call a 23. The Stellarvue 82 and Meades new PWA provide good performance for a much lower price. The rubber eyecup can be raised higher with the use of an included extension ring; a twist-up mechanism would have been preferable. It's hard to keep track of them all. With the 20 mm I will then have 32, 20, 16 and 10 mm equivalents.
