i think that what you are going to hear is : "what are you interested in looking at ?" Edited by Neanderthal, 05 March 2023 - 09:40 AM. Reducer Flatteners for other telescopes, Finderscope Eyepieces with Focusing Reticle, Barlows to double the power of your eyepieces, Stellarvue 15 mm Ultra Wide Angle 1.25" Eyepiece - EUW-15.0, Stellarvue 4 mm Ultra Wide Angle 1.25" Eyepiece - EUW-04.0, Stellarvue 8 mm Ultra Wide Angle 1.25" Eyepiece - EUW-08.0, Stellarvue Ultra Wide Angle Eyepiece Set - EUW-SET. But I'm thinking a pair of the 16's might make a nice selection for binoviewers. Its long 20mm of eye relief, screw-up eyecup and large eye lens makes Orions Lanthanum a pleasure to use. Bottom Line: The best for optics but others provide more comfortable viewing. Its smaller, lighter, and cheaper than the bigger ASIAir Plus astrophoto computer, but is it as good? It just felt like a 68-degree field that was pushed slightly further out. The field is so wide it can be hard to see the edge of the field. sold for a while and that line was 16, 8, 4. Joining an astronomy club can also put more eyepieces in your focuser to the test. For 1.25" 82 eyepieces, I have a mixed set of Televue, ES, and UWA. I have never used any of the super mega ultra extra wide eyepieces. The latter had good optical performance, but with a twist-up eyecup mechanism that was stiff and greasy in the unit I tested. At NEAF, I purchased the 16mm UWA from Stellarvue for $95.I've owned all the WO UWAN in the past but sold off all of them except the 4mm.There was nothing wrong with them. Edited by 25585, 06 March 2023 - 09:04 AM. Build quality 2nd to none.., relatively light for it's size.., but most of all the view is spectacular, all the way out to that wide 100 degree FOV. Please note that this tool is only intended to provide a first orientation and the results are in no way binding. I ordered mine from Omegon and overseas delivery was prompt. I think the common view is that they are in the ES class performance wise. Never occurred to me that they might actually be the same. There was nothing wrong with them. 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. For me, anything 60 degrees or greater feels sufficiently wide. 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. Bottom Line: Near-Ethos image quality for less money. The 28mm UWAN does not appear to be available any longer, but here is an old CN article about the line. Stars are sharp across all but the outer 10 to 15 percent of the field, so very close to Nagler performance. : Yes Filter Thread? Bottom Line: Very good optics and mechanics for an excellent price. I bought this and the 4.7mm on a whim when picking up an SV60. and even less can be tolerated in condition of tacking mount. I've been looking at purchasing some additional eyepieces from those that came with my AD8 Apertura (9mm and 30mm). Cons: Soft off-axis star images. I did sell a lot of axiom LXs though, and owned the 23mm for a while and was impressed with it. Edited by Alex Swartzinski, 05 March 2023 - 11:02 PM. Stars are sharp across all but the outer 20 percent. I strongly recommend both the 20 mm and 9 mm Optimus. Pros: Lightest 100 with good eye relief. I had the 15mm and it lasted 2 weeks in my case. Good heft without being too heavy. The 13mm Televue Ethos is $658, the Televue 13mm Nagler is $335. If the ones from Stellarvue also share these specs, then there is no doubt they come from the same assembly line. The A-T 28UWA/StellarVue 82 and APM 30UFF has already been mentioned in this thread. My bad experience with the 14 Meade put a bad taste in my mouth so I stuck to the big series 4000 version, and never gave the 5000s and axiom LX much thought even when I had access to try them whenever I wanted . For low power, large FOV, I recommend you limit the eyepiece focal length to ~35 mm (thus a 7 mm exit pupil.) Incredible clarity across the entire field of view. Those I find are easiest to use. The value for current overall gradeis the numerical value corresponding to your current overall letter grade. For a lighter, lower-cost alternative, and for 1.25-inch focusers, you might wish to consider an 82 eyepiece. I test ZWOs new ASIAir Mini. I have never used 100o EP's but they are larger/heavier so you might have balance issues depending on scope/mount setup. With the 20 mm I will then have 32, 20, 16 and 10 mm equivalents. 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. This 9 mm eyepiece is ideal for moderate power work on moons, planets and dark sky objects. LMU - Ludwig-Maximilians-Universitt Mnchen, Macromedia University of Applied Sciences, Mediadesign University of Applied Sciences. One thing I like about the type 6 Naglers for doubles is that they're parfocal. Make no mistake, these are large and heavy eyepieces, with some requiring 2-inch focusers. Eye relief is 15mm, a little longer than the Explore and Stellarvue competitors. An important factor is whether you have astigmatism in your observing eye and need to wear glasses when observing,. 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. Despite its modest price and sharp optics, I cant recommend it. Returned it. I had the pleasure of looking through all of the Optimus eyepieces with Vic at the DSSP. The attractive price makes it easier to collect the complete set of three, along with the 8mm and 4mm models. They made their own products as well. I've had both and they are excellent (and same price)! They are obviously not a redesigned barrel on the old ones. To be totally fair, not all eyeglass wearers are the same or require the same amount of eye relief. Crappy skies so I havnt used them yet. The most eyepieces I use are 65 to 70 degrees. 51,000 students. But the price is the highest. The eyepieces rival Televue but they were sold to fund an Ethos. The Stellarvue Ultrawide eyepiece set includes three eyepieces: 4.0 mm 1.25" Ultrawide angle eyepiece with 82 degree apparent field of view ( click here for specifications) 8.0 mm 1.25" Ultrawide angle eyepiece with 82 degree apparent field of view ( click here for specifications) Our EUW eyepieces are now loaded into AstronomyTools database and application. Especially comparing them to the ES line. Super crisp images to the edges. The specifications state an 86 apparent field but it appeared to be the same as the other 82 models. Kunming UWA reskins. I figured out my preferred fov and eye relief by purchasing used eyepieces here on CN. Faster scopes (below f5.9) are more sensitive and require more expensive EP's and a probably a coma corrector. Bottom Line: A good ultra-wide eyepiece for the money. Old, from WO. But once i start using something around 1m+ in focal length, I find 70+ degrees is preferable, and if it matches nicely with the scope, the more apparent field the merrier. A 20mm eyepiece with a 100 field for only $300 seems too good to be true! 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. Note: For definitions of basic eyepiece characteristics mentioned below, see Ed Tings A Beginners Guide to Telescope Eyepieces. Pros: Solid construction with good eye relief. The result given here is non-binding, as this grade converter can only provide a general first estimation. Add 1/8" if rolled up. I've pretty much settled on 68-72 degree eyepieces. Most suffer from variable plossl, svbony, SVBONY Zoom Eyepiece, Zoom eyepiece. 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. I've had both and they are excellent (and same price)! Good correction comes with a price. The Omegons weight is 600 grams, at the lower end of the range for eyepieces in this group. Effect of barlows / field flatness for AT60ED solar imaging. Drop it in a barlow or a slow Mak and it's tolerable. These are $65 or so.., Observing in Northern/Southern Michigan, USA, The NEAF Report from nPAE Precision Astro Engineering. The Panoptic 27mm has an even more pleasing view. It is been known for a long time that the 7mm UWAN is closer to 8mm, so maybe the previously given field stop specifications have been misrepresented so that the focal length-FOV equation should add up on paper(?). The 4.5mm Morpheus is sharper than the Ethos SX, by a hair. 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 true field of view is 0.75 degrees, with an exit pupil of about 1.9 mm. It's the same at low power, which Ernest just pointed out. Your scope is a f5.9. Edited by Jim7728, 08 October 2014 - 01:32 PM. In eyepieces, models with the extreme apparent field of 100 rank at the top for performance - but also price! They were identical to the UWANs (and 5 other brands of the same eyepieces). Meades new PWA (Premium Wide Angle) series is effectively a new version of their previous 82 UWA series, which is still available as of November 2020. LMU - Ludwig-Maximilians-Universitt Mnchen. 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. Astronomy Clubs, Star Parties, Shows, & Conferences, Community Forum Software by IP.BoardLicensed to: Cloudy Nights. Pros: Lightest 100 with good eye relief. Not quite so easy a question. I had been planning on getting ES 82 degree EP's, but I just couldn't pass these up for the $. 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. The contrast is good and the view is clear from edge to edge. However, stars began to bloat 60 percent out from the center and were quite distorted at the edge. Both have the same true FOV and cover the cluster nicely. 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. That is a beast and my first 2 eyepiece. 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. Introducing the new Stellarvue Ultra Wide Angle eyepiece series. I was surprised! Well, that was true until the Stellarvue 28mm / 82. It comes with a vinyl storage bag and the eyepiece is fully waterproof it can even be submerged for cleaning! I'll have to change this in the upcoming 2017 Buyer's Guide. Or know anything about the design and/or origins? You probably won't notice the difference. Kunming maybe? My conclusion from testing this 82 group was that the Explore Scientific came very close to matching the standard-setting premium Tele Vue Nagler, but at a lower price. public University. This is a great moderate power wide field eyepiece for viewing all kinds of deep sky objects, the moon and planets. Heres a low-cost zoom eyepiece that actually works well. It eliminates the need to rebalance the telescope. But it just matters on if you need the eye relief or not, the AT UWA 28 would be great as well if not wearing glasses. Please note: Internationally, grading systems used at institutions of higher educations may differ substantially. The Stellarvue 82 and Meades new PWA provide good performance for a much lower price. I do most of my observing with 82 degree eyepieces. 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. You will get more use out of middle and low magnification EP's now. Another good example is the 50mm finderscope, from both WO and SV (I have both, mostly the same, both excellent). I knew they were re-branded. I just purchased a SV80A (really excited) and they had deal going where you get the 8mm and 15mm for a little over $100 so I jumped on it. ***Apparent Field of View measured in degrees. Nuff said! It's nominally 1mm more of eye relief, but it seems like more because the edges of the field are just that bit more accessible. Program Fees: 0 - 10,000 (per semester) Academic Ranking of World Universities (ARWU) #48, QS World University . The OEM can be contracted to make them to whatever specifications, exacting or not, that the "name on the product" requires. Astronomy Clubs, Star Parties, Shows, & Conferences, Community Forum Software by IP.BoardLicensed to: Cloudy Nights, This is not recommended for shared computers. 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 only cons I've noticed is that they are big and heavy and change the balance point for my small scope+cheap mount and like any other optical system they have to cool down to ambient temp to get the best view (which takes a few minutes). 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. As such, the Nagler Type 6s are showing their age, as newer models of eyepieces, including Tele Vues own Delos series, provide adjustable eyecups and much longer eye relief, important for us aging observers! The knurled grip rings and construction of both are superb. 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. The 28mm has a 2" barrel, the rest are 1.25". Just received the set. I find there are very few choices when it comes choosing a high quality 70 to 82 AFOV design that have enough eye relief for me to see the entire FOV. It sounds like at $65 a piece it would be hard to do any better. I have the WO versions of these and find them very good, indeed! Might it not be that Stellarvue just have updated the specifications so that they better represents reality? New from Stellarvue, ultra-wide eyepieces. Optical performance is also identical and excellent for the money. 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

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