Having tried 52, 60, 70, 76 and 82, I'll stick between 70 and 82. What I dislike is decreasing the AFoV when increasing the magnification, the true field takes a double hit. Telescope Eyepieces Guide - High Point Scientific While the rubber eyecup can fold down, it is stiff enough that it is best left up. Are these made by United Optical? If so, you will need eyepieces with longer eye relief. sold for a while and that line was 16, 8, 4. This grade conversion formula, together with your degree programs Academic and Examination Regulations (FPSO), is a tool to help your convert grades earned in countries other than Germany. Pros: Very comfortable eye relief; superb optics. I'll be curiously watching how this pans out as to the origins of these EP's, if they end up being the old UWANs they are priced pretty competitively. I once read that Televue actually bench tests all of their eyepieces before delivery to their customers or dealers; if so they may be unique in this regard. Click here to simulate the field of view. This is an enthusiast's forum - these folks typically take good care of their stuff. Vixens fine eyepieces dont get the respect they deserve. They look as good to my eye as any of the other high-end eyepieces I've used. Our EOP eyepieces are now loaded into AstronomyTools database and application. Are you looking for a List of Universities in Germany for International Students? Keep in mind, like appliances, or anything else, just because the OEM is the same, and they look the same on the outside, it doesn't mean they will always be the same on the inside. The eyepiece offers a generous 15 mm of eye relief and has a standard foldable rubber eye cup. 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. Faster scopes (below f5.9) are more sensitive and require more expensive EP's and a probably a coma corrector. Munich, German Mnchen, city, capital of Bavaria Land (state), southern Germany. 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. This was part of a 3 piece set and I won't be using this one. The new PWA has an improved design with a standard fold-up rubber eyecup and good eye relief. I find the Televue better, but both the ES and UWA are very close. Like the Ethos, it can be used as either a 2-inch or 1.25-inch eyepiece. If theres one premium eyepiece to buy, it will likely be in this focal length range. But it is an excellent eyepiece, for $80 less than the Tele Vue Ethos. The tool will then calculate your grade in the German grading system. 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. This is a superb eyepiece for the money, with the bonus of argon-filled waterproof construction to keep moisture from penetrating and fogging the eyepiece on humid nights. This 2 inch eyepiece is our widest field in the 82 degree range. The focal length choices seems a bit odd to me: 28mm, 16mm, 7mm and 4mm, but perhaps more focal lengths will fill in the gaps later. Mega gratz on your new scope NIckwin. For a differentiated assessment of the examination performances, the grades can be increased or decreased by 0.3 to intermediate values; the grades 0.7 and 5.3 are excluded. Effect of barlows / field flatness for AT60ED solar imaging, Jon Isaacs, SpaceConqueror3 and mrsjeff like this, sportsmed, edsmx5 and Someone4322 like this, Dave Mitsky, John Huntley, CeleNoptic and, izar187, pj_thomas and Alex Swartzinski like this. You probably won't notice the difference. For Messier 24 ("Delle Caustiche") even in short focal scope 100 deg. Several functions may not work. The TeleVue eyepieces are very sharp across the field, the Astro-Tech eyepieces slightly less so but they provide essentially the same views, just not quite so perfect. Now I see all 3 at half price sale for under $300 for them and that's pretty good, imo! Cons: Slightly soft off-axis performance. 51,000 students. The 100 eyepiece tripod. : Yes Filter Thread? Anything is possible. These wider fields allow me to see things with my peripheral vision and make the whole experience that much more comfortable and enjoyable. I had been planning on getting ES 82 degree EP's, but I just couldn't pass these up for the $. Most suffer from variable plossl, svbony, SVBONY Zoom Eyepiece, Zoom eyepiece. The OEM can be contracted to make them to whatever specifications, exacting or not, that the "name on the product" requires. On my f/5 to f/6 test scopes, stars started to distort 50 percent out from the center and were quite bloated at the edge, the poorest optical performance of the group, but one thats commensurate with price. 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. I think they are made by the same company that made other brands, Orion, Zhumell, SmartAstronomy, et al. Bottom Line: Economical but with optical flaws. In the refractor, though, the 4.5 Morpheus comes into its own, with plenty of drift time with a focal length over 1100mm shorter. Cons: Very aberrated off-axis star images; slightly less than 82 field. I knew they were re-branded. Another good example is the 50mm finderscope, from both WO and SV (I have both, mostly the same, both excellent). I missed the 16mm and regretted it as it's a very useful focal length. Note the Meades middle-weight 638 gram mass and that both the Meade and Omegon are just for 2-inch focusers, requiring more costly 2-inch filters. While still impressive, they arent as wide as the others. 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. (1) it seems that for observer favorite FOV is defined by nature of human eye: 120-140 deg. I've spent a decent amount of time with an 82-degree eyepiece, but the extra field never seemed very immersive to me. Returned it. : 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. Will 1.25 inch eyepieces fit ES coma corrector? 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. Fancy eyepieces are expensive, simpler eyepieces can be nearly as good and much more affordable. I test ZWOs new ASIAir Mini. 3. I've had both and they are excellent (and same price)! Top 100 Worldwide. Ive never been a fan of zoom eyepieces. Pros: Lowest cost eyepiece in the group; long eye relief. Might it not be that Stellarvue just have updated the specifications so that they better represents reality? In WO livery the 4mm's a nice ep for those nights that support it. National Ranking. Night Sky Challenges and the Astronomical League. Bottom Line: The best for optics but others provide more comfortable viewing. They were identical to the UWANs (and 5 other brands of the same eyepieces). (Cheaper products abound, but you never know what you'll get. I've used them at outreach events and the nice eye relief and the wide viewport really help the public get a good view, especially the little ones that often struggle to find the image. Cons: Slightly soft off-axis performance. I doubt Vic Maris will reveal who his OEM is. Bottom Line: Very good performance vs. price. Fully-multi-coated lenses, rubber grip, 43 mm field lens and 2" filter threads. But the twist-up mechanism in one unit I tested (which I exchanged) was loose and rattled. I love my 20mm 100 degree eyepiece. Pros: Very good optical performance and construction; long eye relief. You will get more use out of middle and low magnification EP's now. This my first refractor, my first telescope with quality optics, my first telescope with a wide field of view, and my first telescope with a decent focuser (among other firsts) so I am very excited and anxious to get my hands on it. Why 5 stars? Optical performance is also identical and excellent for the money. But I can't confirm, and they could be a whole new OEM same as the luminos perhaps, rather than the initial SV82 which I am pretty sure was the UWAN. Anyone tried them? I doubt this as JOC won't sell eyepieces to any US brand other than ES since 2012. I really like the 82 FoV in my scope, great image, easy to manage and store. Just received the set. Anyone know who makes the StellarVue Planetary eyepieces? The apparent field is indeed noticeably wider than the other 82s. 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. 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. His website at www.amazingsky.com has galleries of his images, plus links to his product review blog posts, video tutorials, and ebooks on astrophotography. . The one piece of information I have not been able to find here or on other forums is what FOVs people prefer, whether the specified field of view is at specific focal lengths or in general. These are $65 or so.., Observing in Northern/Southern Michigan, USA, The NEAF Report from nPAE Precision Astro Engineering. Some models sell for as much as $700 to $1,000 each. I am fortunate that I do not need to wear glasses.. Over the years, I have built up a collection of eyepieces that includes multiple sets. Incredible clarity across the entire field of view. In my scopes, I generally use the 3.5 mm Nagler with the 2X TV Barlow as my highest magnification. The contrast is good and the view is clear from edge to edge. The failure rate, resolution, sharpness, and other subtle differences were there. The eyepieces name comes from Wide-Angle Long-Eye-Relief and its Canadian designer Glen Speers. Either model represents an excellent value in a mega-wide eyepiece. You are right, he has a complete optical and CNC machine shop at his facility. Introducing the new Stellarvue Ultra Wide Angle eyepiece series. However, stars began to bloat 60 percent out from the center and were quite distorted at the edge. I find that the longer the focal length of the scope, the more I wanted wider apparent fields. 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). 70 is fine at low power, 78-85 fine at medium power, but I prefer 110 at high power. Collecting EP's is a journey for sure in finding out what you really like. Other than that, this eyepiece is excellent and certainly merits your consideration. This is the original 100 eyepiece and is still the standard of excellence. Though advertised as 80, I found the apparent field matched a Naglers 82 field. The most eyepieces I use are 65 to 70 degrees. The A-T 28UWA/StellarVue 82 and APM 30UFF has already been mentioned in this thread. How are the new Orion SkyQuest dobsonians? Pop. However, eyepiece preferences are very personal and you will find a lot of different opinions on this series and its individual focal length. Don't know if this means that that the actual focal lengths are different? Eyepieces with 100 apparent fields of view provide the widest actual fields possible at any given focal length (with the exception of the few 110 and 120 models on offer). 2023 Astromart.com. Note: For definitions of basic eyepiece characteristics mentioned below, see Ed Tings A Beginners Guide to Telescope Eyepieces. Today, they report 4mm, 8mm, and 15mm and are $50 apiece less expensive, at $149 each. Just teasing you, David. MSRP $350. #32 Times Higher Education Ranking. We recommend this as the ideal deep sky eyepiece for viewing nebulae, clusters and galaxies. Posted by Steve Lightstone on 8th Aug 2020. The 4 and the 8mm have barlow lenses in them and they are the same eyepiece other than the barlow lens. Based on the 14mm SSW, I can recommended the series, though they are even more costly than Nagler Type 6s. We all have different preferences for eyepieces. The 28mm has a 2" barrel, the rest are 1.25". We are not all the same when it comes to eye relief requirements, especially when choosing an eyepiece that has more elements than the 5 element budget wide field types. If I'm pleased with the SV 28, I may just go with SVs to complete a set, we'll see. But the soft eyecup nicely places your eye where it needs to be with no kidney-bean blackout. For me, anything 60 degrees or greater feels sufficiently wide. HOW did the Stellarvue EPs work out???? That makes swapping eyepieces at high magnifications easier. For a lighter, lower-cost alternative, and for 1.25-inch focusers, you might wish to consider an 82 eyepiece. This particular line saw its sales creamed by the superior ES 82s when the price on the latter was reduced. It is Bavaria's largest city and the third largest city in Germany (after Berlin and Hamburg). As objects get smaller, and magnification gets higher, I think I appreciate a view that is tightened up a bit. It's the same at low power, which Ernest just pointed out. I am also intrigued by the 4mm. His website at www.amazingsky.com has galleries of his images, plus links to his product review blog posts, video tutorials, and ebooks on astrophotography. Seeing the outer 10 degrees in direct vision is not so easily done. ***Apparent Field of View measured in degrees. This 9 mm eyepiece is ideal for moderate power work on moons, planets and dark sky objects. I've pretty much settled on 68-72 degree eyepieces. At 580 grams, it is the heaviest of the 82 set. Astromania now sells a 32mm, but I suspect it is a 31mm Luminos. And stars are tack sharp across 95 percent of the field, flaring only slightly at the very edge. There are more expensive products, but do they perform any better? With some help from the members here, I'm awaiting a 28mm 82 degree Stellarview EP. Even if they arent perfectly sharp to the absolute edge Im sure theyll be fine for most of the usable viewing range which should be good. 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. The eyepiece is turned my 115 into a whole new scope for visual observing. At NEAF, I purchased the 16mm UWA from Stellarvue for $95. Notice how it's sharp in the center and as you get to the edge the stars grow tails? This is not recommended for shared computers. Pros: Lightest 100 with good eye relief. 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. The eyepieces rival Televue but they were sold to fund an Ethos.I missed the 16mm and regretted it as it's a very useful focal length. Please re-enable javascript to access full functionality. The latter had good optical performance, but with a twist-up eyecup mechanism that was stiff and greasy in the unit I tested. STELLARVUE OPTIMUS 20MM 100deg 2.0'' 9-ELEMENT EYEPIECE Has similar build quality to TeleVue and has a better feel than its APM counterpart. Bottom Line: A good ultra-wide eyepiece for the money. Maybe the following might help: This shows the FoV for a 28mm 82 deg, a 25mm plossl, and a 7mm Xcel EP on my Orion XT8 ( 203mm/1200mm = f5.9), Jon, I 'll be needing some guidance soon; the 28/82 is on the way: using that and my 7mm Xcel as a base, I'll be upgrading/replacing the others to flesh out a "good" set. This affect is more pronounced in lower magnification, wide-field EP's. But I have had really great customer service from stellarvue which is hard to beat, and I have always been happy with their equipment. In my 80/480 refractor, I find even 50 degrees for "high" power to be quite good--e.g., Nagler 3-6 zoom. (Yeah, yeah, I know that's asking a lot.).
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