I think some of these kits even include 4mm eyepieces, and thats ridiculous! My Baader Hyperion Zoom is my most used and favorite eyepiece. I have an SCT and my eyepiece case only hasPlssls (and one Ortho) in it. Their 50 to 52 degree AFOV is wide enough for general observing. Consider something between 35 and 40 mm in focal length with an AFOV of 65 degrees or wider for your lowest power eyepiece for your telescope. Comparing to Plossl, the Expanse eyepiece is a lot more expensive. I have used these in my F6 and F5 Dobs and find them a good value for the price. If you want to buy him $200 eyepieces so he can grow into them, that works. This Super Plossl design was better than regular Plossl eyepieces, but not by much. So plan this into such a purchase. Kellner eyepieces have 3 lenses cemented together and have a 35-50 degree field of view. 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. Most modern telescopes use a focuser, or diagonal, that accepts 1.25 eyepieces. In my scopes a simple zoom eyepiece like the Celestron 24-8mm or the Baader has replaced the higher powered plossls. Are there any good low-cost 2 EPS out there? These are things you will want to know and use. Stargazing Help is a participant in Amazon Associates program. Another way to look at it is that a 30 mm eyepiece in a 3X Barlow works like a 10 mm eyepiece. Tele Vue has eyepieces that approach $1000. In 1860, Georg Simon Plossl invented the Plossl eyepiece. I usually recommend a 32 mm Plossl type eyepiece as that provides about the widest view you can achieve with a 1.25 focuser. 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. At that price point, it couldnt compete with other 5-element devices like Erfle and Nagler eyepieces that had better performance. Better edge correction with a short-focus telescope is one of the things you pay extra money for, and sophisticated eyepiece designs have as many as eight elements. I wants to install one in house(fixed place) another I need movable. Any 1.25 diagonal should work. No price limit. Best Telescope Eyepieces 2022 (TOP 7 Reviews) - Buyer's Guide There is always more to learn but it helps if you go in with a good base understanding, and that was my goal. I have Celestron and the Baader Hyperion. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Since 2011, we've published astronomy related content and reviews to help guide the community better. But what are the differences between these two and how do you know which one to choose? Oh the pain of uh having access to really cool eyepieces.). The first group is made up of a convex lens and concave lens, while the second one has four small cylindrical lenses that work together to magnify what you see through them for your viewing pleasure. The biggest advantage is much better ER in a large ocular. This means you will be able to see a greater expanse for the objects in space but with fewer magnification levels than Kellner or Plossl lenses. Let us know in the comments if there is anything else you want to ask or share your thoughts on this post, always looking forward to feedback from others who will benefit from it as well! Inexpensive Plossls that are manufactured using low-quality lenses are susceptible to internal reflections when viewing bright objects at high magnification. If your scope uses eyepieces that are closer to 1, then you have an old style .965 that is now obsolete. 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. At shorter focal lengths they have less eye relief, and at all focal lengths they have a narrower field of view, than newer types. These are often compared to the higher priced offerings. Omni 32mm Eyepiece - 1.25" Learn More. I cannot thank you enough! There is no guarantee that you will be able to get a good image of any given target at that level of magnification on any given night. To achieve six magnifications, you can have six eyepieces. These are the best in optical performance and build quality. Videos for related products. What Is a Plossl Eyepiece - Planet Seekers But what are the other differences? 8.8 = 240 = .34 Well-made lenses are expensive though, so in general the more lenses, the higher the price of the eyepiece. I am considering buying another eyepiece, maybe 6mm, and a Barlow, maybe 2x, to give me a wider and higher range of magnification. Since each eye has a different focal point, I suspect pulling the eyepiece out until reaching focus and then tightening the set screw. Kellner vs Plossl eyepieces for dobsonians? : telescopes - reddit Lenses are fully multi-coated for excellent light transmission and reduced internal reflections. Sony A7III vs A7RIII Astrophotography: Which One to Shoot Infinity! a Celestron 8-24 Zoom with a 2x Barlow Here's the short answer - Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. I see that there are some optical limits to how wide an FOV a 1.25 EP can manage at bigger (like 32mm) focal lengths. If money is not a concern, you cant go wrong with Tele Vue eyepieces, any Tele Vue eyepieces. 70 mm scope will have a max of 140X for planning purposes. The Plossl eyepiece is a type of optical system that was invented by Ernst Abbe. Offering a wide 43 apparent field of view, this 40mm Orion Sirius Plossl Telescope Eyepiece provides extremely sharp images of impressively high contrast. These come in focal lengths from 2.3 mm to 25 mm. My own lineup (with a C8) is 32mm Plossl, 18.2mm DeLite, and 10.5mm Pentax (the last one not chosen to match, but rather because it belonged to a deceased friend). Required fields are marked *. Again, I only do this for my low power wide views. https://www.widescreen-centre.co.uk/explore-scientific-70-eyepieces.html. But you need to know, first, if you will be wearing glasses when you observe. I can recommend these with confidence. These are the workhorse eyepieces of today. They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. That is a wonderful expression. It's no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. The "sharpness" you are seeing may well be better explained by the focal length of the ep than the quality of Plossls in general. Astrophotography with Nikon D3200: Can It Be Better? Centuries of improvements led to achromatic refractors, where the primary lens is made up of two lenses of different types of glass, which reduces false color fringing and allows the telescope to be made considerably more compact. Even though there are more sophisticated types of EPs, Plossls hit the right spot between high-quality optics and price. Besides fov, How would you compare the optical quality of the Celestron to the Baader? Their eye relief is limited to about 70-80% of their focal length. 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. The views through it are very impressive, and it always amazes me when I get that one out. Plossls provide very good eye relief for eyeglass wearers in focal lengths of about 25mm and longer. It comes with two Barlow lenses, one Newtonian eyepiece, and three Plossl eyepieces in the set. If well made, Plossls are bright, with good contrast, and a flat field, and excellent sharpness. Thanks for a very helpful guide. A key thing to remember is that eyepieces are universal. I have a custom-built 32mm Plossl that has been opened up as wide as possible to 60 or 70 degrees, for use as a 2 eyepiece, although in my 10 Dobsonian at f/5 the edge distortions prevent it from seeing much use. This four-element Plssl design is the most popular eyepiece optical design that gives you excellent image quality, good eye relief, and a 50 to 56 degrees apparent field of view. These low-quality Plossls lack an internally blackened lens barrel with thread baffles and blackened lens edges and sophisticated anti-reflection multi-coatings, all of which are a necessity to produce an excellent image. Or, you may find that you like the 8 mm and 6 mm used with the Barlow and can avoid the expense of two eyepieces. Heres the short answer Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. Look those up, seeing and transparency in the context of astronomy. Many thanks, Sophie. But the one I am recommending here is the Tele Vue Nagler series. But in this scope, the 32 mm doesnt work well. Comparing Orion Telescope & Binoculars options, it appears that a Kellner can be found for almost half the price of a Plossl of the same focal length, although there are also equally cheap Plossls available from various sellers on Amazon that are highly comparable. My love affair with space began in a field in India at the age of 7, when I looked up at the Milky Way for the first time. 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. https://telescopicwatch.com/orion-skyquest-xt8-intelliscope-review/. I cant answer that specifically as I have no experience with that eyepiece in that scope. If you don't like the reflections, there really aren't many other budget options at its focal length beside a Plossl which will be super uncomfortable to use, or spending over $100 for something like a Meade UWA. 32 mm = 18.75X12 mm = 50X8 mm = 75X6 mm = 100X4 mm = 150X3 mm = 200X. Also worth mentioning i wear glasses which I will wear while observing. Plossl eyepieces have 4 lenses that are paired in two doublets. I would like to know what is best for a 7 year old that would be getting his first telescope. In essence the design differences between Kellner and Plossl comes down to the number of lenses within the eyepiece barrel. Thanks for your comment. Some optics brands have taken the next step and launched some eyepieces they have labeled as Super Plossl. The tradeoff was that each lens surface added another internal reflection, reducing contrast and adding glare. They are not that expensive I would pay about $100 for both eye pieces. Im fairly picky so would extend budget for better eyepieces if its worth it. The field of view of a p Plossl eyepiece is typically 60 to 120 degrees. I loved my Baader Mark-IV 8mm-24mm Zoom+Barlow combo in my 8" EdgeHD. Any 1.25 eyepiece will work with the BH Zoom 2 adapter. Higher than 3X is usually reserved for astrophotography. I have since moved up to a 12 Dob but I use the same eyepieces and the BH Zoom continues to be my most used. They also offer a generous 16 mm of eye relief which is most important in the shorter focal lengths. 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. Major telescope brands such as Celestron supplies Kellner eyepieces with their r least expensive telescopes and still may. Note that many cheap eyepieces promise a wide AFOV but deliver a view with a lot of distortion or aberration as you move away from the center of the field of view. When I had a 6mm Kellner, I found the eye relief annoyingly short, sure, but when compared to the 6mm Plossl that often comes with eyepiece kits, it was luxurious. 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. How you divide up your magnification range is up to you. That is a really interesting picture. The difference isnt that severe, and I often track more often than is strictly necessary to keep the object centered anyway. Those are significantly more expensive than the 1.25 focal lengths. They are also really sharp. There are some very good choices in this range. But dont fear that you will waste your investment as eyepieces are standard sizes. A 32mm Plssl is worth it. You noted eye relief is important for those wearing glasses. We are a reader-supported organization. Planetary eyepieces: Ploessl or Orthoscopic and which brand Using this approach, you would buy a 2X Barlow and hold off on the 4 mm and 3 mm to see if you can reach these magnifications often enough to justify buying an eyepiece. Ever since, I have been attempting to cram in every fact about the Universe, I can find into my head. How do you focus - I would have expected helical focusers in the eyepiece holders but don't see any? 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. If youre still wondering between a Kellner vs Plossl, my advice to you would be invest a little extra cash and go for a good quality Plossl. If you wear glasses when observing, you probably want 15mm or more of eye relief, which the 20mm Plssl provides, but the shorter fl ones dont. Even though the design has existed for more than a century, it has stood the test of and is still today the standard against which other eyepiece designs are measured. If you cant use 2, that 32 mm Plossl, which has a 50 degree AFOV, will give you about as wide a field of view as you can get in a 1.25 eyepiece. As new anti-reflection coatings were developed, it became possible to actually make use of complex lens arrangements (not just in relatively simple 4-element systems but also in convoluted, extreme wide-field eyepieces such as the TeleVue Nagler). Celestron Eyepieces | Celestron Telescope Eyepieces - High Point Scientific You can buy eyepieces specifically focused on a particular scope or you can buy eyepieces that you expect to use with this and all future scopes. FOR SALE! Pay attention to the eye relief, especially if you will be observing with glasses. Yes, Plossl eyepieces are some of the most popular with amateurs and professionals alike. These Astromania Plossl eyepieces provide a good way to do exactly that without breaking the bank, and this is what I love about them: they're an affordable way to significantly upgrade your telescopes. Etc.? For shorter focal lengths, the StarGuider BST series eyepieces have greater eye-relief, so are better suited. It's one of the best choices you have when it comes to budget stargazing. Tele Vue offers several series with apparent fields of view from 50 degrees to 120 degrees. This would definitely matter to observers who wear eyglasses when viewing. I couldnt find any suggestions on your site about diagonal recommendations. What focal length eyepieces should I buy? You can do that by using this long focal length eyepiece. And the zoom provides every magnification in that range without having to change eyepieces. Overall, I would highly recommend the goldline eyepieces. Plossl eyepieces have a wide FOV and are known for their clarity and sharpness. (Compare, for instance, 20mm of each type, or 10mm of each type.) Sirius Plossls offer a 52-deg apparent field of view for clear, sharp images. 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. Glad you found it helpful. She has been looking at the sky for years and hopes to introduce more people to the wonderful hobby that is astronomy. However, you may see them at higher prices for the short term. I think you will love it! Thus the 30 mm eyepiece in a 600 mm telescope produces 600/30 = 20X magnification while with the Barlow, we have 1800/30 = 60X. I often recommend it. Many thanks. 8.5-ish mm (75x & 150x) An Austrian inventor Georg Simon Plossl came up with the Plossl eyepiece design in 1860. Apparent Field of View: This is a measure of how wide a view the eyepiece will provide as compared to alternate eyepieces. Eye relief of less than 10mm gets really uncomfortableyou tend to rub your eyepieces against the eyepiece or lens, and you have to hold your eye at just the right distance to keep from touching the lens. Meade telescope maksutov eyepiece ETX-105EC Super Plossl 6.4mm 1.25" w Below .5 mm exit pupil, floaters in the eye become more apparent and can be bothersome. The atmosphere is typically the limiting factor as we get to higher magnifications. Youd have to look into more complex designs which include a barlow lens, or simply use a longer focal length eyepiece with a quality barlow. I did sell them all when I adopted Dioptrx, and the Naglers are amazing! How Good Are Super Plossl Eyepieces for Astronomy? 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. 14 = 128 = .6 Higher values are slower and lower values are fasterthis is a holdover from camera lens terminology and has to do with exposure times.). I have an F4 Newtonian reflector and if I use an eyepiece of longer than 25 mm, an exit pupil of 6.25, I start to get a dark area in the center of the field of view which is a shadow of the secondary mirror. A decent barlow might cost as much or even more. 5 Best Telescope Eyepieces in 2023 [+Beginner's Guide] condition as described, a good transaction. the reality is that today's eyepieces are all quite good, particulalarly in an f/10 telescope. i didnt have all this simply-put information when i bought my orion st-80 as my christmas present to myself in 2020. i started out with several pair of binoculars i bought used off ebay, then bought the scope. And that is pretty much what Super Plossl are today. This can be especially helpful in telescopes of focal ratios below F8. Best suited for telescopes with f-ratios f6 or slower. Plossls are available from many suppliers in a wide range of focal lengths in 1.25 and 2 sizes. These eyepieces are technically called Symmetrics, since Plossls can have different focal lengths for each doublet, but they are always marketed as Plossl. And, in general terms, the higher the AFOV, the harder it is to make an eyepiece that will present a good image all across the field of view, which also drives up the cost. At one time Plssls were premium eyepieces. The Wiki article(s) were very good if anyone else is confused. Lets look at the minimum. Thank you so much for taking the time to provide all this information! In simple terms, high focal ratio scopes, say those over F6, tend to be less demanding on eyepieces than those below F6. I have to say that your questions are answered in the article. The longer FL Plossls (>15mm) have some distinct advantages over more complex designs without the major disadvantage of Plossls which is short ER. The computerized pad and motor work on AA batteries which can last you a few hours. A Televue Plssl may be better than a generic one, but the difference is probably not worth the additional cost. Depending on how fussy you are about having a completely clean image across the visual field, if you have a lower focal ratio scope you will want to look for eyepieces with a reputation for being better corrected in low focal ratio scopes. Press Esc to cancel. Orion Sirius Plossl 10mm telescope eyepiece 1.25" in very good to excellent 185794462395 So you would have to test the set to see the actual result. For astronomical observations, such as viewing craters on the moons surface from Earth, high-magnification models are preferred because they offer more detail. You really understood the material. These "other" ones I speak of, aren't technically that, they are a 5 element eyepiece, of a different design. Other eyepieces of more advanced design can have better eye relief and field of view. I recommend it often to beginners on a tight budget. Then there is the rule of thumb to avoid duplicating focal lengths when acquiring eyepieces. But the longer FL units are certainly useful. So you ended up with: This can be very helpful for star hopping. Looking from different sorts I found the Baader Aspheric 31mm and 36mm.these two eyepieces allow me to switch between 2" and 1.25"just by changing the barrel. I have used both Kellner & Plossl eyepieces and a few others, and I can tell you that they all are quite different from each other in terms of the quality of the image that they produce. Plssl's were top of the line at one time, and are still being sold today, so that says something too. 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. This is your Lexus, Acura, and Infinity types that offer more features, better build, and a bit more polish. I am going to use 6. Low focal ratio scopes deliver the light rays to the eyepiece at an ever-increasing angle as the focal ratio number goes down. I still have it and still use it from time to time. The Plossl design has become the mainstay of the modern ocular business and probably represents the best value in terms of performance and price, especially in medium and long focal lengths. Once I knew how much I liked the zoom I upgraded to the Baader Hyperion Zoom. I like my 38/70. Through the 32mm eyepiece, objects will look larger, and though they may have a lower surface brightness, the surface brightness of the background sky will also be lower. Save my name, email, and website in this browser for the next time I comment. I started with the Celestron zoom. Choosing the most appropriate can completely change your experience in using telescopes. If one Super Plossl specifies it uses a 5 lens design, then you can definitely consider it a true Super Plossl that might offer better performance, but no brand has released any of those for decades. The bottom line is that it is best to have several magnification choices so you can optimize the view. What is a Plssl eyepiece? | BBC Sky at Night Magazine Meade telescope maksutov eyepiece ETX-105EC Super Plossl 6.4mm 1.25" w capsule. Plossl telescope eyepieces are the most popular type of eyepiece on the market. Kellner and Plossl- both are two different types of eyepieces for telescopes. These are effectively simple designs like Plossls, Kellners, Konigs, and RKEs, with long focal lengths, that have a lens included to increase their focal length. This is just a planning target. And, the quality of the eyepiece clearly comes into play here. Plossl vs Kellner Eyepieces. - Little Astronomy The components of a Plossl eyepiece are the two groups of lenses. You also get 7 1.25 filters which include the following, #80A Blue Filter, #58 Green Filter, #56 Light Green Filter, #25 Red Filter, #21 . To say it a different way, in general, an F5 scope will place more demands on the eyepiece around the edge of the field of view than an F10 scope. A Barlow lens can save you money and add flexibility. But the difference in price to get to the next level is high, and the performance difference may be small. However the package includes a 1.25 to 2 adapter so if you have a 2 focuser you can treat this like a 2 eyepiece leaving the adapter normally included with the scope for use with other 1.25 eyepieces. 4. I had a TV 20mm Plossl once. I agree. Edited April 23, 2010 by russ teh_orph Members 28 198 Author This is the link to the one I plan to buy as I know some others come with add ons: https://www.rothervalleyoptics.co.uk/baader-hyperion-mark-iv-8-24mm-universal-zoom-eyepiece.html, Thats great you had an XT8i that makes me feel confident I got a good telescope . The magnification range that is appropriate to your scope. I do not miss beating my eyelashes against a 9.7mm Meade Plossl that I used to own. short answer: yes. I dont know if they make anything like this anymore, but as a kid, I had plastic slides with images on them (the Milky Way, Horse Head Nebula, etc.) . Not really. Celestron - 1.25" Eyepiece and Filter Accessory Kit - 14 Piece Telescope Accessory Set - Plossl Telescope Eyepiece - Barlow Lens - Colored Filters - Moon Filter - Sturdy Metal Carry Case. I have seen wider-field Plossls. The basic design hasnt changed much, but the real costs of manufacturing have dropped. They deliver sharp images in almost all telescopes. Have Any Astronauts Been Lost in Space Forever. Celestron Telescope Eyepieces - CHUCKHAWKS.COM You can read a thorough review of Goldline eyepieces here. So perhaps you do your line up like this. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. Stargazinghelp.com is a knowledge hub for professional and amateur astronomy and astrophotography enthusiasts. 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. 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. My Meade 4000 56 and 60 degree Meade Plossls are pretty sharp to my eyes and do pretty well for me. there are of course options to plossls which are about the same prices as GSOs such as the BST Discoveries and TMB type eyepieces (new from Skies the Limit on Ebay) which have a wider field and better eye relief than plossls and are probably as good as most things non-premium. Hi - I bought these from another AM'er 1 year or so back, thinking I will get into visual astro, But never found the inclination, So here it is for sale 9mm Nagler type 6 mint with box and caps,16mm Nagler type 5,optics are exc.
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