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. Meanwhile, Plossl eyepieces are much more common and easy to find. Understanding and using a Barlow Lens A zoom eyepiece works like the zoom lens on a camera. Once I knew how much I liked the zoom I upgraded to the Baader Hyperion Zoom. I expect such eyepieces are available but I have never seen or used one. ES 82 degree series plus 1 meade uwa @20 mm with 1800 focal length optical tube lowest mag 51 x / highest mag 300. . The BHZ in a 2X Barlow will take an XT8 to 300X. To estimate the highest practical magnification for your telescope, you take the aperture in millimeters, mm, and multiply it by two. You probably dont need to worry about upgrading them as soon as you get your telescope, unless you can see an optical problem in the one youre using or you find the short eye relief for the short-focus eyepiece uncomfortable. Plossl eyepiece is good for astronomy and microscopy. Number of Lenses. These are matters of individual preference and budget. The Plossl is a good all-around eyepiece design, is well suited for generic use and is relatively inexpensive to make. I would suggest you also get a 2 low power wide view. In order to help you narrow down your choices, weve created a short guide that can help you figure out what the best viable option is. 1.25" Power mates with T ring adapter. Age is not part of the equation. They also offer more eye relief than Plossls at the shorter focal lengths. Kellner and Plossl- both are two different types of eyepieces for telescopes. EP-mm = magnification = afov 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. 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! If your telescopes focal length is different, just change the focal length in the formula. They are not that expensive I would pay about $100 for both eye pieces. The magnification range that is appropriate to your scope. Thanks all. I think you will love it! For visual use, 1.5X, 2X, 2.5X, and 3X Barlow lenses are common. 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. Why two sizes? Of course, the entire eyepiece must be manufactured and finished correctly to realize the design's full potential. What is a Plossl Eyepiece and What's So Great About Them? Astro Essentials Super Plossl Eyepiece | First Light Optics Between Kellners and Plossls, this means a 32mm Plossl, which maximizes the field of view in the 1.25 barrel diameter format, will show more stars than either a 32mm Kellner with the same magnification but a smaller true field of view, or a 40mm Kellner (or 40mm 1.25 Plossl, which has a 40 degree apparent field of view) with a lower magnification and the same true field of view. 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. When you add eyepieces to your collection, you will want to consider what field of view you want and how much you are willing to pay for it. The eye relief is the distance between your eyes and the eyepiece where you are able to view the whole image comfortably. Thanks. This type of design provides for both total magnifications as well as an erect image with little distortion. Stargazinghelp.com is a knowledge hub for professional and amateur astronomy and astrophotography enthusiasts. I took notes and now can shop with confidence You will see these under many brands, including Orion, Celestron, GSO, and others. 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 . Yes, the wider field of view of a Plossl is very helpful, but 40 degrees of Kellners isnt a soda straw (unless you are used to looking through very wide field eyepiece. Over time, you may wish to add a specialty eyepiece here or there, but I would not make that a priority until you have filled out your magnification range. Required fields are marked *. For what it is worth, a slow scope like your CPC9.25 (f/10?) They are usable, but your eye will be extremely close to the top lens glass. Again, does it create a more immersive viewing experience? I believe the 5000 UWA's are good as well. 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. If you have a longer focal length telescope, your shortest focal length eyepiece will be a higher number than what I have shown here. Elena is a Canadian journalist and researcher. 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. My Meade 4000 56 and 60 degree Meade Plossls are pretty sharp to my eyes and do pretty well for me. Super Plossls offer a smaller field of view, which makes them good for close-up views and examining small objects. I have not had an opportunity to test it yet but the general discussions have favorable. 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. But the difference in price to get to the next level is high, and the performance difference may be small. condition as described, a good transaction. I can recommend these with confidence. It was named after Peter Barlow who invented it in the 1800s, so it is usually capitalized. Then you can judge for yourself if it is worth it. A 32mm Plssl is worth it. It doesnt matter what type of telescope you have, as long as your scope takes these standard sizes. However, for your extra money you get the finest manufacture, the best polish and coatings available. 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. It offers good color correction and high-contrast images. 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. Thus the 30 mm eyepiece in a 600 mm telescope produces 600/30 = 20X magnification while with the Barlow, we have 1800/30 = 60X. The Hexagon Zoom Eyepiece is made from durable plastic material that resists scratching and it has an eye relief distance of 15mm. I had a newer - purchased in 2016 Meade 32mm (white lettering) that was no better than the older 32mm 4000. Note that the price categories are approximate, as prices can vary between retailers. Even if we were next-door neighbors this would take weeks of discussion and planning. 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 only reason it's in this list because of its price and a long focal point. Now here is something that some of us classic scope nuts know - there are plossls, and there are plossls. See if you will observe with or without your glasses. The longer FL Plossls (>15mm) have some distinct advantages over more complex designs without the major disadvantage of Plossls which is short ER. Dont worry about the math, as its simple stuff you can do with any calculator, on paper, or perhaps in your head. I beleive this is the same as they ones you asked about. 11 = 163 = .5 Orion Sirius Plossl 10mm telescope eyepiece 1.25" in very good to excellent 185794462395 Fully coated with magnesium fluoride on every air-to-glass surface for excellent light transmission and high contrast views. However, the BH Zoom is by far my most used eyepiece. Plossl vs Super Plossl Eyepieces: The Differences - Stargazing Help The zoom can be used with any 1.25 focuser too. This can be very helpful for star hopping. Recall that your lowestpower eyepiece's exit pupil should not exceed 6mm. Plossl vs Kellner Eyepieces: The Ultimate Comparison While I also have the Baader Hyperion Zoom, mentioned later, I continue to make use of the Celestron, especially in my smaller scopes. Plossls are extremely versatile and can be used for all use cases. Plossl eyepieces have a wide FOV and are known for their clarity and sharpness. This saves money and helps you shop in an organized manner. It had one of the best fields, edge to edge, in my SCT that I've ever seen. With your glasses on, you simply cant get your eye close enough to an eyepiece that only has 10 mm of eye relief. So you would have to test the set to see the actual result. The field of view of the eyepiece has a few effects when it comes to actually using it in the telescope. Their eye relief is limited to about 70-80% of their focal length. 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. Cheap to try, and if you don't like it, easy enough to sell also. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our team of experts has reviewed and ranked 180+ telescopes based on price and quality. These lenses are connected together. We can see that 2 eyepieces have an advantage over 1.25 eyepieces when designers are making wide-view eyepieces. Look those up, seeing and transparency in the context of astronomy. Our previous exchange convinced me to start out with an 80mm refractor. Visual astronomy is all about aperture, the more the better. 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. I had a bino pair of TV 20mm Plossls, very fine for high power planetary observation with my long focus 8" Mak, then I also bought the older TV 21mm Plossl, after trying the 21mm I sold the more recent 20mm. Save my name, email, and website in this browser for the next time I comment. If you would prefer to buy him $60 eyepieces or even $30 eyepieces because he is only 7 and he can upgrade later, that is also OK. It is pretty much worth it for everyone that has a telescope with a 1.25 inch focuser to have a 32mm Plssl. I generally use my 40 to search for DSOs so Ill probably replace that one at some point too. The way a Plossl eyepiece works is by using the convex lens and concave lenses to create an image that has both total magnification of what youre viewing, as well as erect images. Now looking for a couple of decent eyepieces. As said, they are cheap to compare. The price ranges we show here are the typical prices. As long as you take good care of them, Plossls can last you a lifetime, and you will be able to use them with your next telescope if you upgrade at some point. Oh the pain of uh having access to really cool eyepieces.). I want these as possible as wide, magnification and astrophotography purpose. If you are going to wear your glasses when you observe, you want at least 18 mm of eye relief and 20 mm is better. This is your Lexus, Acura, and Infinity types that offer more features, better build, and a bit more polish. The views through it are very impressive, and it always amazes me when I get that one out. They are all made by the same OEM manufacturer. Choose three focal lengths. Le migliori offerte per Celestron 1,25 pollici Omni Plossl telescopio astronomico britannico 32 mm J8R6 sono su eBay Confronta prezzi e caratteristiche di prodotti nuovi e usati Molti articoli con consegna gratis! There are inexpensive adapters that will let you use standard 1.25 eyepieces in a .965 focuser/diagonal. Glad you found it helpful. You can email me also. It comes with two Barlow lenses, one Newtonian eyepiece, and three Plossl eyepieces in the set. 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 yeah, they are good.. and some are even better than others, and more collectible. I continue to be very pleased with the ES82 eyepieces. 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. I also like to have my face physically in contact with the eyepiece (or the eyepiece cup) so the tight eye relief of the shorter focal lengths actually works really well for me. I have the 38 mm and recommend it often. 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. Eye Relief: This refers to how close your eye has to be to the lens in order to see the full field of view. And that is pretty much what Super Plossl are today. In our example, we targeted 200X as the top magnification. This has nothing to do with your scope or eyepiece. What happens if you use an eyepiece that has a the wrong exit pupil? A 20mm Plssl is probably worth it, if for no other reason than to compare the views it gives to the 21mm Hyperion you have. I purchased the Celestron Starsense 102mm refractor, focal length 660mm, stated highest useful magnification is 240x; it should arrive in about 2 weeks. 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. Warranty Limited Warranty against defects in materials or workmanship for one year from date of purchase. Eye relief is the distance from the eye lens to your eyeball, and the higher the better (within reason). Here we focus on becoming a knowledge hub for astronomy and astrophotography enthusiasts. It will also make your life easier if youre out observing on windy days that would otherwise blow off the front cover of your telescope. Celestron Eyepieces | Celestron Telescope Eyepieces - High Point Scientific Other than the limited AFOV, which you are apparently fine with, and limited eye relief in the shorter focal lengths there is certainly no reason not to choose Plssls. In general terms, the higher the AFOV number, the more the eyepiece will cost. Perhaps you should seek out help from your local astronomy club. Sooooo helpful! My Baader Hyperion Zoom is my most used and favorite eyepiece. These "other" ones I speak of, aren't technically that, they are a 5 element eyepiece, of a different design. Note to spectacle wearers: Plssl eyepieces with 15mm and longer focal lengths are good choices for spectacle wearers. Question: would an 18mm Baader Classic Ortho mostly used for Moon and planets loose sharpness and contrast if used with a short F5 telescope like the Celestron Astro-Fi 130? Are there any good low-cost 2 EPS out there? . The ocular for your highest visual acuity - for viewing deep-sky objects and the like - should have an exit pupil around . It is all about your budget, your goals, and your objectives, as outlined in the article. THANK YOU x 12! 1. Omni 32mm Eyepiece - 1.25" Learn More. Achromatic vs Apochromatic refracting telescopes. They are just OK, but I dont recommend them, especially in a low focal ratio scope. 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. A key thing to remember is that eyepieces are universal. 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). 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. 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, The Explore Scientific 68 degree series would be better but at a much higher price. Eyepieces are a religion. The Plossl eyepiece is a four-element design consisting of two doublets. They include links to them where they can be ordered. Kellner vs Plossl eyepieces for dobsonians? : telescopes - reddit Non-eyeglass wearers can usually tolerate Plossls as short as about 10-12mm before their eyelashes start brushing the ocular lens. This gives us more flexibility at the low end of the magnification range. In this article, were going to talk about what is a Plossl eyepiece, what are its components, how do they work, how many types are there and how youd buy a good Plossl eyepiece. SVBONY Eyepiece Review: Take Your Stargazing Up a Notch I think some of these kits even include 4mm eyepieces, and thats ridiculous! This may be enough for many eyeglass wearers. If you look up transparency and seeing in the context of telescopes you can learn more about how atmospheric conditions will affect what magnifications you will choose on any given night. It is pretty much worth it for everyone that has a telescope with a 1.25 inch focuser to have a 32mm Plssl. 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. There is the 56mm Meade Plossl which magically turns my short FL refractors into their own finder scopes. I have seen some gatekeeping in this hobby about Kellners, and Im not sure I understand it. Explore Scientific, like many eyepiece providers, have higher-priced and budget lines. So speaking of the Barlow as if it modifies the FL of the eyepiece, while technically not correct, does provide an easier model to understand the net effect. I wont go into all the types of aberrations that can be there. The one exception I would keep in mind would be when working with Newtonian reflector telescopes below F5. This was my first zoom eyepiece and the one that caused me to fall in love with zoom. Apparent Field of View: This is a measure of how wide a view the eyepiece will provide as compared to alternate eyepieces. They are also really sharp. 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. Quality this good usually costs a lot more. Your email address will not be published. The Big Bang Optics is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. If you do not have your Hyperions yet I recommend you wait until you have these and try them out before you buy the Plossls. I have an SCT and my eyepiece case only hasPlssls (and one Ortho) in it. the reality is that today's eyepieces are all quite good, particulalarly in an f/10 telescope. In 1849, Carl Kellner invented the Kellner eyepiece, which is essentially a Ramsden eyepiece where one lens has been replaced with an achromatic doublet made of two different types of glass. This SVBONY eyepiece review should get you up to speed with the budget stargazing options. 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 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 . A Plossl eyepiece lens provides more eye relief than anything else out there! Do I need an adapter if my scope has a Plossl lens? These sport a 60-degree apparent field of view, about a 20% wider apparent field of view than Plossl eyepieces. 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. A standard Plossl eyepiece is typically between 20mm to 25mm but can range anywhere from 15mm up to about 40mm in diameter. I need your advice on it. That is the critical factor. Plossls and Kellners, like other simple eyepiece designs, have moderate fields of view and tend to have short eye relief as you scale them down to shorter focal lengths.