Which is Stronger? They are also really sharp. Ive read, and re-read, and re-re-read this page. These come in focal lengths from 2.3 mm to 25 mm. We often end up spending more on eyepieces than we did on the telescope. Type above and press Enter to search. To estimate the highest practical magnification for your telescope, you take the aperture in millimeters, mm, and multiply it by two. The Hexagon Zoom Eyepiece is made from durable plastic material that resists scratching and it has an eye relief distance of 15mm. Achromatic vs Apochromatic refracting telescopes. Etc.? There is a little bit more to it than that and there are other design . Worth is a subjective evaluation, so here is my subjective input: 1. 17mm Plossl, unbranded, used, no caps, in bolt case; previous owner said it was a very good EP; $18 25mm Plossl, Orion Sirius, fully MgF2 coated on every air-to-glass surface; used; $23 (these are a step up from . Not all are Plossls, but excellent eps at f/10. As we go up in price range, we gain capabilities that may not be immediately obvious. Disclosure - If you buy something via our link, we may earn a commission with no additional expense to you. I already got the 10mm super wide because of the added eye relief but at 15mm both have the same eye relief. Then there is a pair of 32mm and 20mm TV Plossls which make my binoviewers work well with a Daystar Quark H-alpha solar filter. Here's the short answer - Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. Nice, thank you again for the additional inputs. Age is not part of the equation. The generic GSO Plssl from many manufacturers, including Astronomics (Astro Tech) and Agnena Astro, is as good as the Celestron and a few bucks cheaper. It may be a bit less than that in reality but for practical purposes that is close enough. These are two very important considerations when you are looking for eyepieces. At least you'll have one budget eyepiece that will give you a larger part of the sky at low magnification. Also, as the apparent field of view gets wider, the image will require more correction. They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. Required fields are marked *. 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. I have seen elsewhere discussions about the exit pupil of eyepieces. Your eyepieces do not need to be the same brand as your telescope. I wants to install one in house(fixed place) another I need movable. Later in the article, I will also give my top recommendations for both the best Kellner as well as the best Plossl eyepieces. Most modern telescopes use a focuser, or diagonal, that accepts 1.25 eyepieces. https://telescopicwatch.com/best-telescope-mounts-for-astrophotography/, https://telescopicwatch.com/best-astrophotography-telescopes/, https://telescopicwatch.com/best-barlow-lens-and-how-to/, https://telescopicwatch.com/celestron-8-24mm-zoom-eyepiece-review/, https://www.amazon.com/Orion-8879-1-25-Inch-Enhanced-Telescope/dp/B000BMPBLK/ref=sr_1_8?crid=3KKUJRXYYN7DI&dchild=1&keywords=telescope+diagonal+1.25&qid=1610887695&sprefix=telescope+diagonal%2Caps%2C512&sr=8-8, https://telescopicwatch.com/orion-skyquest-xt8-intelliscope-review/, https://www.rothervalleyoptics.co.uk/baader-hyperion-mark-iv-8-24mm-universal-zoom-eyepiece.html, https://www.amazon.com/s?k=Orion+Q70&ref=nb_sb_noss_2, https://telescopicwatch.com/best-telescope-eyepieces/, https://www.amazon.com/Orion-8829-Wide-Field-Telescope-Eyepiece/dp/B000M89H7C/ref=sr_1_2?dchild=1&keywords=Orion+Q70&qid=1606584502&sr=8-2, https://www.amazon.com/Explore-Scientific-68%C2%B0-40mm-Eyepiece/dp/B007LMG3F6/ref=sr_1_1?dchild=1&keywords=explore+scientific+68&qid=1606584676&sr=8-1. This is why we recommend you try to locate the object first at low power, then use a higher magnification if you likethe wider field of view on the sky provides more context in terms of asterisms and reference stars and makes it more likely that youll catch the object you are looking for. Although Kellner eyepieces will help you learn a lot in the beginning but soon will realize that youre missing out on something, and eventually you will be tempted to spend money on another good quality eyepiece. Pay attention to the eye relief, especially if you will be observing with glasses. These "other" ones I speak of, aren't technically that, they are a 5 element eyepiece, of a different design. Plossls are available from many suppliers in a wide range of focal lengths in 1.25 and 2 sizes. AP is all about the mount and accurate tracking. In the box you'll receive 5 1.25 eyepieces at following sizes, a 32 mm Plossl Eyepiece, 17 mm Plossl Eyepiece , 13 mm Plossl Eyepiece, 8 mm Plossl Eyepiece, 6 mm Plossl Eyepiece, a 2X Barlow Lens 1.25. A key thing to remember is that eyepieces are universal. The image quality is very good and the additional field of view and longer eye relief makes them very comfortable to use. The availability of good quality relatively wide field-of-view inexpensive eyepieces has kind of put them in the second tier of eyepieces, but they still hold their own in the longer focal lengths and excel if one does not demand a wide field-of-view. Find many great new & used options and get the best deals for Meade 32mm 2" 5-element Super Plossl Wide Field Eyepiece at the best online prices at eBay! Amazon.com : SVBONY SV137 Barlow Lens 1.25 Inch 2X Barlow Lens Metal Vixen NPL Eyepieces | First Light Optics 2. The magnification range that is appropriate to your scope. Thanks for a very helpful guide. High-quality Plssl eyepieces provide high contrast and sharpness across the entire field of view. Omni 9mm Eyepiece - 1.25" Learn More. I continue to be very pleased with the ES82 eyepieces. This makes them a bit more complex and expensive than other designs, but also gives them a wider field of view, reasonable eye relief, and reduces optic aberrations. SVBONY Eyepiece Review: Take Your Stargazing Up a Notch philhas Members 61 459 Location: North East England If you are completely new to stargazing, Kellner eyepieces are absolutely fine. Most people will be fairly comfortable with eye relief of 12 mm or higher. 1:10 . Their eye relief is limited to about 70-80% of their focal length. Orion SkyQuest XT8 Intelliscope Review This has nothing to do with your scope or eyepiece. I had a newer - purchased in 2016 Meade 32mm (white lettering) that was no better than the older 32mm 4000. You can build a full set of these with good results, but be aware of eye relief, especially if you wear glasses. However, there can be a problem bringing the eyepiece into focus. The price can run to over $1000 per eyepiece. 5-Minute Read, How To Increase The Magnification Of A Telescope; 5-Minute Read. While many people will stay with and add Plossls to their eyepiece set, I would recommend not going below 10 mm focal length as the eye relief gets quite short. Dont worry about the math, as its simple stuff you can do with any calculator, on paper, or perhaps in your head. Your email address will not be published. We are a reader-supported organization. Overall, I would highly recommend the goldline eyepieces. https://www.widescreen-centre.co.uk/explore-scientific-70-eyepieces.html. Lets just say that once you get below F5, it is really hard for the eyepiece to deliver a clean image to the edge. In simple terms, high focal ratio scopes, say those over F6, tend to be less demanding on eyepieces than those below F6. Understanding and using a Barlow Lens But what are the other differences? Gosky 1.25inch Plossl Telescope Eyepiece - Amazon.com Is there anyway you could include links to the eyepieces you mentioned in the last paragraph of your reply as Im totally new so worried about buying the wrong thing! Have Any Astronauts Been Lost in Space Forever. 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. The reason a plano-convex lens is good for using with a telescope is that it provides for both magnifying and erecting the images. Cheap to try, and if you don't like it, easy enough to sell also. OHHH, now i get it! Many Kellners are made with field stops opened up to 50 degrees, in which case it can truly compare to a Plossl in any telescope with a focal ratio of f/6 or slower. I have seen some gatekeeping in this hobby about Kellners, and Im not sure I understand it. You will see these under many brands, including Orion, Celestron, GSO, and others. Kellner Vs Plossl | What's The Difference? - Starry Nova Even big telescopes are subject to limitations imposed by the atmosphere. Note that as we get into the higher magnifications, the millimeter jumps between eyepiece focal lengths gets smaller. As for Barlow Lenses, take a look at this article. For modern eyepieces, the differences between Plossl and Super Plossl is going to depend on the manufacturer. They offer a 52-degree apparent field with clean, high-contrast images. If you are upgrading, avoid ones that say correct image as these add a prism system into the diagonal which can reduce the light transmission. This also makes them more resistant to any form of dust getting inside the eyepiece. With a 8" dobsonian, a 6mm is very versatile. In the world of eyepieces, when you want the very best, turn to Tele Vue, but be prepared to pay a truly premium price. https://www.amazon.com/Orion-8879-1-25-Inch-Enhanced-Telescope/dp/B000BMPBLK/ref=sr_1_8?crid=3KKUJRXYYN7DI&dchild=1&keywords=telescope+diagonal+1.25&qid=1610887695&sprefix=telescope+diagonal%2Caps%2C512&sr=8-8, Excellent article and very good recommendations. Wide view and well-corrected view, even in F5 scopes. I recommend it often to beginners on a tight budget. If you wish to find a short-focal length eyepiece with a longer, more comfortable eye relief, you could use a long-focus eyepiece with a separate, high-quality barlow lens (an achromatic or apochromatic fully multi-coated barlow would be necessary), or you could purchase one of the several designs incorporating a smyth/barlow lens into the eyepiece design. Thanks all. 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. 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. They have a 50-56 degrees field of view, better eye relief, and cost more than Kellners. My understanding of eyepieces was very limited until I read this article, you explain things in a clear and understandable way which made my understanding so much clearer. Omni 6mm Eyepiece - 1.25" Learn More. There is always more to learn but it helps if you go in with a good base understanding, and that was my goal. What is a Plossl Eyepiece and What's So Great About Them? Typically a Barlow does not add or subtract from this, but there again we have bad Barlows and Good Barlows. In the 1990s Meade instruments came up with a new design for the Meade 4000 line similar to Plossl that added a fifth glass element on top of the two pairs (4 total). Such eyepieces are able to offer great performance, i.e., satisfactory degrees of deviations, to about a 50.degree field. Once I knew how much I liked the zoom I upgraded to the Baader Hyperion Zoom. They are 82-degree AFOV eyepieces. If the above guide has helped you understand the terms and workings of eyepieces, scroll up and make a selection from our recommendation list. Astromania 1.25" 4mm Plossl Telescope Eyepiece - amazon.com What happens if you use an eyepiece that has a the wrong exit pupil? These are often compared to the higher priced offerings. Again thank you very much for all the information in the page, excellent notes. thanks for all your help. My 20, 26, and 32mm Plossls will probably stay around. These sport a 60-degree apparent field of view, about a 20% wider apparent field of view than Plossl eyepieces. The magnification and field of view is the same as a 10 mm eyepiece (AFoV being unchanged) in a 600 mm telescope but the eye relief is that of a 30 mm eyepiece. If you upgrade the telescope or add a second one, the eyepieces will work on that telescope too. . Not really. Why two sizes? However, you may see them at higher prices for the short term. Free shipping for many products! In the beginning, you are not going to know what the atmospheric conditions might be in your area. Understanding and using a Barlow Lens As we continue, what would you recommend adding first? 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. Besides fov, How would you compare the optical quality of the Celestron to the Baader? She has been looking at the sky for years and hopes to introduce more people to the wonderful hobby that is astronomy. I dont think so. You can email me also. Their 50 to 52 degree AFOV is wide enough for general observing. I think Id really enjoy a zoom for all the reasons you mention, But Im having a difficult time assessing how much weight to put on the field of view of given eyepieces. Even if you did need a 4mm focal length (for high powers in an f/4 telescope, of course), neither a Kellner nor a Plossl would have long enough eye relief for that to be comfortably usable! The biggest advantage is much better ER in a large ocular. I took notes and now can shop with confidence My other eyepieces, ES and Meade 82 degree, stayed in the eyepiece case most of the time. I have Celestron and the Baader Hyperion. This is the link to the eyepiece I am looking at potentially buying, would you recommend this over the Orion one or vice versa do you think? So yeah, they are good.. and some are even better than others, and more collectible. I dont have a specific diagonal to recommend and I am not aware of any specific issues with the one that is included with the scope. 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. Does this sound like something you would recommend based on the telescope I have? The only difference is that they have a different design as well as a shape with their lenses, which affects the magnification of your telescope view. Now we have a maximum established. So if you need to go to Arcturus and then go 2 degrees to the right to find your target, you can use the FOV of the eyepiece to estimate 2 degrees. Good 32mm Plssls run around $30-$40. 3. The quality of a Plossl eyepiece completely depends on the brand and model, so be very careful in our selection. The difference isnt that severe, and I often track more often than is strictly necessary to keep the object centered anyway. You could base this on 3, 4, 5, 6 or more focal lengths/magnifications. Excellent article, thank you very much for taking the time to publish it. My most used eyepiece is an 8-24 mm zoom. It costs three to four times as much as the Celestron Zoom, but if you have the budget, this is the one to get. The Japan made 16mm Meade 3000 was a very nice medium power plossl and the 40mm in that series was surprisingly nice as well. Read our full affiliate disclosure here. No other type can compare with it when it comes to that quality. Ever since, I have been attempting to cram in every fact about the Universe, I can find into my head. A decent barlow might cost as much or even more. Plossl vs Super Plossl Eyepieces: The Differences - Stargazing Help 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. Yes, Plossl eyepieces are some of the most popular with amateurs and professionals alike. So you would have to test the set to see the actual result. This can be especially helpful in telescopes of focal ratios below F8. i did buy an astro-tech 3.2 paradigm ed from a cloudynights.com forum member. The components of a Plossl eyepiece are the two groups of lenses. As I mentioned earlier in the article, not all Plossls are created equal, which simply means that there are good Plossls and then there are bad Plossls. Some reviews also suggest replacing the diagonal. But I think you will feel more confident about your purchases and be less likely to be disappointed if you read through the guide. Just start with 32 mm for your low-power eyepiece. If we want to get VERY specific to a combination then inherent aberrations of this scope and that eyepiece could produce a unique result. 10mm Orion Sirius Plossl Telescope Eyepiece | Orion Telescopes Plossl eyepieces are often included in better telescope packages as the starter eyepieces. At shorter focal lengths they have less eye relief, and at all focal lengths they have a narrower field of view, than newer types. We are a team of active amateur astronomers, here to help you with all your astronomy and science related needs this is anything, from reviewing the latest telescopes to be released to talking about gravity and neurons. The third choice of eyepieces is the Orion 12 mm Sirius Super Wide Angle Correct Image Eyepiece. I am looking for as much as best I can buy. I consider the Plossl to be the minimum standard for a good eyepiece. Despite this, I also have some Plossls which are indispensable. There are some very good choices in this range. A Plssl is probably as good as any 32mm eyepiece in a 1.25 inch focuser. Plossls are the clear winner here in most cases, unless you have one of the wider-field 50-degree Kellners. 5 Best Telescope Eyepieces in 2023 [+Beginner's Guide] Kellner vs Plossl Eyepieces (Pros And Cons) - Scope The Galaxy The downside to this type of lens is that they can cause chromatic aberration which creates colored spots around bright objects such as planets or stars due to the different wavelengths not going through equally. very happy. The Wiki article(s) were very good if anyone else is confused. Most telescopes come with one or two eyepieces, which gives you one or two magnification options. Features : 5 superior-grade Plossl eyepieces: 1.25-in, 4-element design with a 52 AFOV (32mm has 44)4mm, 6mm, 9mm, 15mm, and 32mm . And of course, NEVER look through a telescope pointed at the sun that does not have a safe solar filter covering the front. With modern multi-coated optics that thwart internal reflections, Plossls and Kellners have little difference in glare or transmission/opacity. I have several 10mm eyepieces in my eyepiece boxalmost all of them are eyepieces that came with some telescope I boughtand I will almost always choose to use one of the Kellners over one of the Plossls, because the Kellners have a longer eye relief, which is comparable to the focal length. Plus the FOV expands as you zoom to the higher powers. Best Telescope Eyepieces 2022 (TOP 7 Reviews) - Buyer's Guide This is perfect for a 25mm Plossl (an extremely common standard) and downright luxurious with a 32mm Plossl, but when you get below about 12.5mm or 10mm, it can begin to get difficult to use. Would a higher magnification eyepiece help do you think or am I already pushing my telescope (XT8) to highest sensible magnification I can with BH zoom on setting 8mm and 2x Barlow? Can you give me any specific recommendations on what to buy and from where? They are referring to how much or how little distortion is visible as you look from the center of the image out toward the edge. In stargazing, eyepieces are as important as telescopes are. 1200 mm FL scope / 10 mm FL eyepiece = 120X, 40 degree AFOV / 120X = .33 degrees (less than 1 full moon wide), 60 degree AFOV / 120X = .5 degree FOV (about one full moon with no space around it), 82 degree AFOV / 120X = .68 degree FOV (about one full moon with a star field around it to frame it). Your email address will not be published. None of my fancy EPs have enough contrast for this application. For the $66/$42 of these kits, you can get one or two decent eyepieces (depending on where you buy). The Expanse is a lens that provides an extra sharp image, and it also has a wider field of view compared to the Plossl eyepiece. Save my name, email, and website in this browser for the next time I comment. 75-225X, 1.5X Barlow Gold Line eyepieces also offer better eye relief than Plossl eyepieces, especially at the shorter focal lengths. Tele Vue offers several series with apparent fields of view from 50 degrees to 120 degrees. Good quality. They can also be found as Orion Expanse sporting a blue line rather than gold. https://telescopicwatch.com/best-astrophotography-telescopes/. 8.5-ish mm (75x & 150x) This wider field of view will make it easier to find your targets, allow you to view larger deep-sky objects, and provide a more immersive experience for everything that you view.
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