i think that what you are going to hear is : "what are you interested in looking at ?" (1) it seems that for observer favorite FOV is defined by nature of human eye: 120-140 deg. This eyepiece is ideal for higher power work on planets and double stars since it is very sharp, contrasty and has a generous 82 degree field of view. For 1.25" 82 eyepieces, I have a mixed set of Televue, ES, and UWA. 15mm Stellarvue is identical to the 14mm ES 82, field curvature and all, as noted above. Call us at: 530 823 7796 Open Mon-Fri 9-5 Pacific Time, 4.0 mm 1.25" Ultrawide angle eyepiece with 82 degree apparent field of view(, 1.25" Ultrawide angle eyepiece with 82 degree, Our EUW eyepieces are now loaded into AstronomyTools database and application. Add 1/8" if rolled up. Bottom Line: Economical but with optical flaws. Pros: Lightest 100 with good eye relief. I have a 4.5mm Morpheus and a 4.7mm Ethos SX. You sometimes feel more like you are actually there, in the view. Introducing the Stellarvue Optimus eyepiece series. Buy all three of our high end 82 degree eyepieces and save! Accessories, Astrophotography gear, Reviews. And stars are tack sharp across 95 percent of the field, flaring only slightly at the very edge. Stars begin to distort in the outer 25 percent of the field, so worse than the Explore Scientific and Tele Vue Ethos, but still very good, especially for the price. Reducer Flatteners for other telescopes, Finderscope Eyepieces with Focusing Reticle, Barlows to double the power of your eyepieces, Stellarvue Ultra Wide Angle Eyepiece Set - EUW-SET, Stellarvue Optimus Eyepiece Set with Case - EOP-SET, Stellarvue 4 mm Ultra Wide Angle 1.25" Eyepiece - EUW-04.0, Stellarvue 15 mm Ultra Wide Angle 1.25" Eyepiece - EUW-15.0, Stellarvue 8 mm Ultra Wide Angle 1.25" Eyepiece - EUW-08.0. But it is an excellent and attractive, though large, eyepiece at a slightly lower price than a Nagler with much better eye relief. Don't know if this means that that the actual focal lengths are different? Or know anything about the design and/or origins? Just teasing you, David. LMU - Ludwig-Maximilians-Universitt Mnchen. Eye relief is a comfortable 13mm and theres no annoying kidney-bean shadowing of the exit pupil, true of the others in this group. Notice how it's sharp in the center and as you get to the edge the stars grow tails? Collecting EP's is a journey for sure in finding out what you really like. Bottom Line: Another fine ultra-wide eyepiece for the money. 2023 Astromart.com. Haven't noticed these before. Astronomy Clubs, Star Parties, Shows, & Conferences, Community Forum Software by IP.BoardLicensed to: Cloudy Nights. As the object, or area of an object, being viewed, often take up a very small area of the field of view. In this complete system we include the large 28mm 2" wide field eyepiece for low power, the 8mm ultra-wide angle eyepiece for medium power, and for high power we provide the 4 mm ultra-wide angle eyepiece. Tele Vues Type 6 Naglers are small, light and tack sharp across the field, even on fast f-ratio telescopes. Several functions may not work. The 16 and 7mm looked diffierent than these didn't they? The eye relief is comfortable but a bit tight at around 12mm. Edited by timmbottoni, 03 November 2014 - 08:49 PM. The attractive price makes it easier to collect the complete set of three, along with the 8mm and 4mm models. Optical performance also proved similar, with stars in the Meade beginning to distort 60 percent out from the center and appearing fairly aberrated at the edge of field. And there are some very good options.. For wide field eyepieces, TeleVue introduced nearly all the modern designs starting with the first Nagler more than 40 years ago. public University. In short, I found it uncomfortable to use. I have the WO versions of these and find them very good, indeed! Please note that this tool is only intended to provide a first orientation and the results are in no way binding. Accessories, Astrophotography gear, Reviews. The Stellarvue 82 is well made, with a compact, solid construction, good 14mm of eye relief (better than the stated 12mm) and a fold-up eyecup. There's also a comfort factor. A great one-two punch when observing. $65 a piece is very cheapfor these eyepieces, so you did a very good deal there. : Yes Filter Thread? Some people love the porthole views of 100-degree eyepieces, and others like me would rather have a cozy field stop that's easy to take in with long eye relief. Pros: Very good optical performance and construction; long eye relief. Pop. In my 80/480 refractor, I find even 50 degrees for "high" power to be quite good--e.g., Nagler 3-6 zoom. The result is the equivalent to your grade in the German grading system, where 1.0 is the maximum grade and 4.0 the minimum passing grade. The failure rate, resolution, sharpness, and other subtle differences were there. Do you search for top universities and information on admission requirements, language certificates (TOEFL/IELTS) and application deadlines? Cheers. It is just on the edge of being sensitive to what EP you can throw in the focuser and get good results. New from SV? Stars are sharp across all but the outer 10 to 15 percent of the field, so very close to Nagler performance. Good decision! The amount of head tilt needed to see the edges of the field are less than other ~100 degree eyepieces, including Ethos, ES, and APM. There are also 60 degree eyepieces like the Starguider ED and Paradigms. Pros: Very good optics and waterproof construction. The rubber eyecup can be raised higher with the use of an included extension ring; a twist-up mechanism would have been preferable. I love my 20mm 100 degree eyepiece. In the case of the old JOC days, the axiom LX 15mm was probably the same as the 14mm UWA. Field Stop: 13.6 mm Number of Lens Elements & Groups: 7 elements Special Features: Tapered insert tube Comes with Dust Caps? Like the Ethos, it can be used as either a 2-inch or 1.25-inch eyepiece. The only downside is that it's a bit bulky. For Messier 24 ("Delle Caustiche") even in short focal scope 100 deg. Bottom Line: A superb and compact top-class eyepiece. So from a practical point of view, I find there's little difference in drift time. It is likely KUO like the WP Meade UWA, who also make the UWAN/PWA. I'm hoping they will be sharp to the edge at f/7. But viewing with glasses on is still possible. I strongly recommend both the 20 mm and 9 mm Optimus. You would recognize the names of the OEMs if I told you. The 8-element Morpheus design provides nearly top-class performance for much less than the premium competition, which would also include Tele Vues 72 Delos series. Those look just like the WO UWANs, and they are in the exact same focal lengths. However, stars began to bloat 60 percent out from the center and were quite distorted at the edge. With a 10 inch Newtonian at an f5 focal ratio, the 50mm eyepiece you are considering will produce a 10mm exit pupil. Click here to simulate the field of viewhttps://astronomy.tools/. And the included velvety storage bag is very nice. That is unless it's purely coincidental that these appear to be the same as well-known OEM UWAs, and in fact Vic actually designed and manufactured every single one of them by hand using his automated CNC lathes, grinding and polishing equipment, and then triple tests them before shipping them to the user. The 28mm has a 2" barrel, the rest are 1.25". 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. The value for current overall gradeis the numerical value corresponding to your current overall letter grade. Reducer Flatteners for other telescopes, Finderscope Eyepieces with Focusing Reticle, Barlows to double the power of your eyepieces, Stellarvue 9 mm 100-Degree 1.25/2" Optimus Eyepiece - EOP-09.0, Stellarvue 20 mm 100 Degree 2" Optimus Eyepiece - EOP-20.0, Stellarvue 3.6 mm 110-Degree 1.25/2" Optimus Eyepiece - EOP-03.6, Stellarvue 8 mm Ultra Wide Angle 1.25" Eyepiece - EUW-08.0, Stellarvue 4.7 mm 110-Degree 1.25/2" Optimus Eyepiece - EOP-04.7, Stellarvue 13.5 MM 100 Degree 1.25"/2" Optimus Eyepiece EOP 13.5. Ive never been a fan of zoom eyepieces. Just received the set. Pros: Good off-axis sharpness and eye relief, but . I find the 82 degree fields of my Explore Scientific 9mm to be less accessible, though it is a nice sharp view. I've had both and they are excellent (and same price)! The 100 eyepiece tripod. I see only two, a 9mm and a 6mm. The eyepieces name comes from Wide-Angle Long-Eye-Relief and its Canadian designer Glen Speers. But the original Ethos remains unmatched for optics. They're still well regarded, though the 28mm is said to be ergonomically awkward to view through. Cons: Slightly soft off-axis performance. Hmmm, looks like those four focal lengths are the only ones they make, at least for now. I present them in order of increasing price. It obviously isn't about context in that case, it's about drift time. (Cheaper products abound, but you never know what you'll get. Are these made by United Optical? He (or his expertly trained staff)machines optical tubes and adapters, polishes lenses, fabricates altazmounts, and yes his triple testing of his refractorsis now legendary! Widest range of top-quality eyepieces, from 3.5mm to 31mm Known for having flat fields and high contrast as well as great clarity Backed by Tele Vue's excellent quality control Explore Scientific 82 Degree Eyepieces Comments All focal lengths are waterproof/argon purged Excellent apparent field of view at 82-degrees Well to be honest, United Optics products tend to be quite good, whether branded as WO or SV, or something else. Your scope is a f5.9. It can just matter on how you want to frame objects personally I feel 60o or less FOV is like looking through a tunnel so I dont use those EP's as much even though I have some. At 564 grams even with its 2-inch adapter tube, Stellarvues Optimus is the lightest of the 100 set, a consideration for balancing smaller telescopes. Don't dismiss buying a used EP out of the Classifieds section - I found two of mine there. If I'm pleased with the SV 28, I may just go with SVs to complete a set, we'll see. Tight eye relief, a lot of field curvature, and edge-of-field brightening at f/10. This is like binge watching 4 seasons of a great show with a total cliff-hanger at the end of season 4, only to have the network cancel the show. Anything is possible. Not quite so easy a question. Stellarvue 4 mm Ultra Wide Angle 1.25" Eyepiece - EUW-04.. Thanks for the input, I appreciate it. However, with your eye positioned where it needs to be to see the whole field, the field partially blacks out with squirming kidney-bean shadows (technically called spherical aberration of the exit pupil). The eyepieces rival Televue but they were sold to fund an Ethos. Top 100 Worldwide. It's all part of the marketing game. The Panoptic 27mm has an even more pleasing view. Then MyGermanUniversity is the right place for you. I have a tendency to increase the apparent field as the magnification goes up so I don't have to push the dob quite as much. 15mm Stellarvue is identical to the 14mm ES 82, field curvature and all, as noted above. ***Apparent Field of View measured in degrees. Bottom Line: A good, economical choice for Schmidt-Cassegrains. It comes with a vinyl storage bag and the eyepiece is fully waterproof it can even be submerged for cleaning! Edited by Jim7728, 08 October 2014 - 01:32 PM. A year ago, they had 3 focal lengths of 82 eyepieces of 4, 7, and 16mm, and I reported them in the 2016 Guide to eyepieces. Though advertised as 82, Celestrons 15mm Luminos had an apparent field between that of the 76 Morpheus and the other 82 models.
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