I think you will love it! Your email address will not be published. For super Plossl eyepiece, the field of view is typically 40 to 60 degrees. Hello sir, thanks for your article its realy helpful. I must also warn you that some of these bad Plossls may actually turn out to be worse than any run-of-the-mill Kellner. I hear that, sometimes you find one that is sweeter than others. The biggest advantage is much better ER in a large ocular. Free shipping for many products! 1:10 . Tele Vue offers several series with apparent fields of view from 50 degrees to 120 degrees. 70 mm scope will have a max of 140X for planning purposes. I continue to be very pleased with the ES82 eyepieces. The Plossl was also called a Kellner Type III in some earlier references; in the 1950's, Edmund Scientific sold a "Kellner" eyepiece made from war surplus lenses, but it actually consisted of two achromats in the classic Plossl configuration. Field of view, is about finding, framing, drift time, and context. A Plossl eyepiece has a lens thats plano-convex, which means it is flat on one side and convex on the other. The three-lens eyepiece that came out of this was much better at controlling false color fringing and other distortions, even in telescopes with short focal lengths. It comes with two Barlow lenses, one Newtonian eyepiece, and three Plossl eyepieces in the set. There are many more designs that are associated with specific brands, but the ones above are designs that are produced by many companies in one form or another. Like going from a 32 TV to a 65? Every new skill takes time. However, I have eyepieces that have larger exit pupils than 7 mm and they work well. Now, for my one or two low power eyepieces, I also like to know the field of view provided by that eyepiece. What focal length eyepieces should I buy? However, if you want to optimize your viewing experience, youll need to invest in a better-quality eyepiece. Perhaps another review would be helpful. Since it's such a popular eyepiece and allows for quality, planet-viewing, that makes it a great instrument for attracting newcomers to the hobby, especially children. A Plssl is probably as good as any 32mm eyepiece in a 1.25 inch focuser. A Barlow lens will not reduce the CA in a low FR achromat refractor so to speak of it changing the focal ratio would, I think, introduce confusion in most situations. I have owned wider eyepieces, but ultimately I just prefer the Plssls (must be a mental defect). So you ended up with: People may have heard, and rightly so, that Huygens or Ramsdens are crummy eyepieces and that they should get a Plossl instead, and they may believe the same applies to Kellners, but the truth is that Kellners are often good eyepieces. So save yourself this future unnecessary expense and just buy a Plossl. Omni 6mm Eyepiece - 1.25" Learn More. Or we say that F10 would be easier or less demanding on the eyepiece than the F5. The BHZ in a 2X Barlow will take an XT8 to 300X. Their 50 to 52 degree AFOV is wide enough for general observing. They are a good brand with high-quality eyepieces, you just dont need to spend the extra money for almost no gain in performance. Ive read, and re-read, and re-re-read this page. I recommend it often to beginners on a tight budget. very happy. Now looking for a couple of decent eyepieces. This is not a hard and fast rule, just a cautionary note. Orion SkyQuest XT8 Intelliscope Review But for AP you should really start your planning with the mount. The original Meade 5-piece Super Plossl hasnt been in production for decades and at this point is more of a collectors item than a high-performance eyepiece. Many compare these favorably to eyepieces that are much higher priced. I have CPC 925 and I currently own Hyperion 10mm, Hyperion 17mm and Celestron plossl 40mm. Outstanding job Jack. So I sincerely hope that this article helps you understand the similarities and differences between Plossl and Kellner eyepieces so that you can an informed decision and choose the best one for yourself. condition as described, a good transaction. And since this article is intended as an aid to beginners rather than a rigorous optics lesson, I think the context I provided works well enough. I found an ES 70 degree AFOV 35mm eyepiece and am wondering whether I should get this or the Orion 38 70. Cheap to try, and if you don't like it, easy enough to sell also. It is pretty much worth it for everyone that has a telescope with a 1.25 inch focuser to have a 32mm Plssl. This is why many telescopes come standard with at least one Plossl eyepiece. This saves money and helps you shop in an organized manner. The Plossl eyepiece is a four-element design consisting of two doublets. While eyepieces with relatively complex, proprietary, or bespoke designs are becoming more commonly available in the beginner price bracket, there is often good reason to choose a much simpler design. Omni 32mm Eyepiece - 1.25" Learn More. Excellent, thank you for the breakdown, very much appreciated. The design uses a planoconvex, two cemented-element eye lens and a large convex field lens. If you plan to go longer than that you can get an AC adapter or a power tank. High-quality Plssl eyepieces provide high contrast and sharpness across the entire field of view. Nothing will stop you from trying to go higher, but in all likelihood, the image will be poor and not worth the cost of eyepieces to achieve it. For what it is worth, a slow scope like your CPC9.25 (f/10?) Kellner vs Plossl - Comparison table. Lets illustrate with an example using a 1200 mm FL telescope. The Hexagon Zoom Eyepiece is made from durable plastic material that resists scratching and it has an eye relief distance of 15mm. I have used these in my F6 and F5 Dobs and find them a good value for the price. Explore Scientific 68 34 mm or ES 82 30 mm would also be good choices at a significantly higher price but with better edge correction. If you do choose to go with a Plossl eyepiece, I highly recommend spending some extra cash to get yourself a decent good quality branded Plossl eyepiece rather than going for a cheap, generic eyepiece which is a Plossl only for the namesake. But will the Baader CO with 1.5-2-3x Barlows deliver a visibly sharper and more contrast view of the Moon and planets than the zoom lens with a 2x Barlow, to compensate for the zooms convenience that is the question! 1.25" 6.3mm 32mm 40mm Plossl eyepiece set give you a good variation in magnification for a wide range of targets with extra sharpness and long eye relief. Some of these series also offer 2 eyepieces for telescopes that can accept 2 eyepieces. My other eyepieces, ES and Meade 82 degree, stayed in the eyepiece case most of the time. They all work, but as you go up in price, you gain features or performance or both. https://www.amazon.com/s?k=Orion+Q70&ref=nb_sb_noss_2, Understanding Telescope Eyepieces- There are recommendations, based on budget, Below 20 however, the eye relief makes it difficult for me and my glasses so Ive been replacing my 5-15 EPs with 82 degree EPs with more relief. In most cases, these are eyepieces that are focused on wider AFOV or better correction for low focal ratio scopes. I am not aware of an ES branded 70 degree series in the USA, but they do have a Bresser branded 70-degree series. Many approach the quality of the premium brands. If your focuser/diagonal will accept 2 eyepieces, then I will suggest you get one or two 2 eyepieces for your low power wide view eyepieces. The Big Bang Optics participates in the Amazon Services LLC Associates Program, which is an affiliate advertising program designed to provide a means for websites to earn advertising fees by advertising and linking to amazon.com. You noted eye relief is important for those wearing glasses. You can enjoy wide-angle views without giving up any of the clarity or sharpness when using Plossl eyepiece while Kellner will give you more magnified views but at less than half the brightness levels in comparison to other lens designs on this list if light pollution was involved. Us big kids like zooms too. Regular Plossl eyepieces with maybe just a slightly better coating or build quality. FOR SALE! Plossl eyepieces have a wider field of view that can go from 50 to 56 degrees. As we continue, what would you recommend adding first? 100-300X, 2X Barlow. But with 2 eyepieces and a Barlow, you have the full effective range of your telescope. did i pass? Again, I only do this for my low power wide views. Edited April 23, 2010 by russ teh_orph Members 28 198 Author Just give yourself some time to learn the app and to understand the scope. In my opinion, you do not. Between $100 and $250, I will call it mid-range. A good modern eyepiece like a BST starguider 12,8 and 5mm are excellent eyepieces. Suggesting an F6 scope becomes an F18 would also imply things like reduced CA in a refractor. A 10mm or shorter Plssl is probably not worth it unless you want to see how you personally cope with short eye relief. However, sometimes i am at the end of the range of the binocular focus adjustment. One of the main drawbacks of this eyepiece, though, is the eye relief. For astronomical observations, such as viewing craters on the moons surface from Earth, high-magnification models are preferred because they offer more detail. Within the budget-friendly realm are the 6mm and 9mm Goldlines/Redlines (66-degree Ultra-Wide-Angle) for telescopes with a focal ratio of f/8 or longer, and the excellent 58-degree Planetary eyepieces, sold by a variety of sellers on Amazon and by Agena Astro, which come in a wide variety of focal lengths and are optically superb for their price. Achromatic vs Apochromatic refracting telescopes. Plossl and Kellner eyepieces are two very common examples of a simple eyepiece design, and they are probably the most common type of eyepiece you are likely to come across when eyepieces have been bundled with a telescope; they are also a very common aftermarket accessory. Depending on your budget, if you only have limited funds and are just starting to fill out your eyepiece collection I would go with the zoom, then zoom with Barlow. My most used eyepiece is an 8-24 mm zoom. But your point is well taken. I did sell them all when I adopted Dioptrx, and the Naglers are amazing! In your case, I would do this for the 30 and the 20. I am very near-sighted, barely see the big E on the vision chart without glasses. 130 mm scope will have a max of 260X for planning purposes. Orion Sirius Plossl eyepieces are ideal for any type of telescope; refractor, reflector, or catadioptic. In that respect, they are similar to the Explore Scientific 82 degree mentioned earlier. ORION SIRIUS PLOSSL 10mm telescope eyepiece 1.25" - $17.01. Required fields are marked *. A Barlow lens is an optical device that goes between the eyepiece and the focuser. Again, for no other reason than to compare it to the 17mm Hyperion and draw your own conclusions about Plssls. For your application and the eyepieces you have or are going to get, you really dont need anything else. The Plossl has good color correction plus is free of the ghost images that plague the Kellner. Great article on eyepieces but I am still undecided exactly what eyepiece & Barlow to buy and from where since some buying sites dont provide all the info you cite in your article. Take the AFOV of the eyepiece (provided by the mfg) in your case 82 degrees I have Celestron and the Baader Hyperion. 20 = 90 = .8 Those are significantly more expensive than the 1.25 focal lengths. So, even if you have a Maksutov-Cassegrain scope, you should get a good experience from this eyepiece. All the rest will likely be 1.25. Fortunately, the investment can be leveraged with future scopes since eyepieces are standard sizes so they work in almost any telescope.