Worth it is a tough question to answer. EP-mm = magnification = afov Well-made lenses are expensive though, so in general the more lenses, the higher the price of the eyepiece. Here are a few types of eyepieces you may read about and their typical AFOV. If you go this route, you can always add single focal length eyepieces along the way to serve specialized purposes. The view being presented to your eye in a low power eyepiece minimizes everything from optical aberrations in the telescope, to distortions from thermals or atmospheric conditions. These sport a 60-degree apparent field of view, about a 20% wider apparent field of view than Plossl eyepieces. The ES is actually slightly cheaper than the Orion but my understanding from your reviews and replies is that ES might actually be the better eyepiece have I got that right? Today, most beginner telescopes of any quality are sold with either Kellner or Plossl eyepieces. It offers good color correction and high-contrast images. I had a newer - purchased in 2016 Meade 32mm (white lettering) that was no better than the older 32mm 4000. If you are looking at eyepieces that are wider than 55 degrees AFOV, you will again need to consider looking at the better corrected, and typically more expensive, eyepieces. I like my 38/70. I want to help you select the best eyepieces for your budget and your telescope. But some people demand the very best, and it is available, at a price. This saves money and helps you shop in an organized manner. Customer reviews Average Rating (16 Reviews): Write a Review and share your opinions! They are all 4-element Plossl eyepieces, and most have a 52-degree field of view that is common to the Plossl design. If you read the article you know how to calculate the magnification and field of view. Ive read, and re-read, and re-re-read this page. Or, you can have three properly sized eyepieces and use a Barlow lens to achieve three more magnifications, which is usually a less expensive way to go. 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. The views through it are very impressive, and it always amazes me when I get that one out. As of the past couple years, it seems possible that the choice between Kellners and Plossls has been made for usyou either get what you get with your beginner telescope, or you will have to find a Plossl. https://telescopicwatch.com/best-telescope-mounts-for-astrophotography/, Then you look at the optical tubes. 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. It should list what size eyepieces you can use. If your scope uses eyepieces that are closer to 1, then you have an old style .965 that is now obsolete. Kellner eyepieces have 3 lenses cemented together and have a 35-50 degree field of view. Something in the 30 to 38 mm range with a 65 to 70 degree AFOV. Or take one of your eyepieces and measure across the bottom of the barrel. Good value. This would definitely matter to observers who wear eyglasses when viewing. There is no problem using a Celestron eyepiece in a Meade telescope, for example. Sony A7III vs A7RIII Astrophotography: Which One to Shoot Infinity! But dont fear that you will waste your investment as eyepieces are standard sizes. 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. This determines how much light the telescope will gather. If we combine a Barlow with an 8-24 mm zoom eyepiece, we have an amazing range. I loved my Baader Mark-IV 8mm-24mm Zoom+Barlow combo in my 8" EdgeHD. You have selected a very good starting telescope that will serve you for many years to come. Between $100 and $250, I will call it mid-range. It is all about your budget, your goals, and your objectives, as outlined in the article. A Plssl is probably as good as any 32mm eyepiece in a 1.25 inch focuser. OK that makes sense, many thanks. The magnification range that is appropriate to your scope. 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. Learn more about our story and the team behind the scene. I am looking for as much as best I can buy. If you want to observe the fine details of a specimen, Plossl eyepiece has a higher magnification than an ocular with lower lenses. See if you will observe with or without your glasses. I have Celestron and the Baader Hyperion. Plossl eyepiece is one of the reasonable options when it comes to telescope eyepieces for stargazing or astronomy. How does that field of view impact the viewing experience? The length of eye relief on a Plossl eyepiece ranges from 12 millimeters (less common) all the way up to 45 millimeters with added benefits being that you dont have any issues seeing into your view. Pay attention to the eye relief, especially if you will be observing with glasses. I cannot thank you enough! To get the best performance, you have to be willing to pay the price. You really understood the material. Thanks in advance I really appreciate it! The price can run to over $1000 per eyepiece. You are talking about the technical details of how a Barlow works, and I agree. The telescope comes with a 2x Barlow so I was thinking of getting one of the zooms you recommended. In stargazing, eyepieces are as important as telescopes are. 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. If your focuser/diagonal only accepts 1.25 eyepieces, I would recommend you use a 32mm as your longest focal length, lowest power eyepiece. Also, children do not often have highly developed motor skillsso I would avoid the frustration of switching out eyepieces, and consider a zoom lens. That is the critical factor. 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. Meanwhile, Plossl eyepieces are much more common and easy to find. 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. But the conventional way of expressing it is in terms of eyepiece focal lengths. . And I continue to read excellent reports on the AT Paradigm and similar under different labels. The BHZ 2 Adapter has threads on it so you can attach filters to it allowing you to use 2 filters with the zoom. In the beginning, you are not going to know what the atmospheric conditions might be in your area. If you were considering a Super Plossl made by an entry-level brand, just use those extra funds to instead get a regular Plossl made by a more reputable manufacturer. Hi Ed, that is really helpful sorry if this is a daft question but is the baader hyperion 2 or 1.25 or can it be both? This will become more apparent the wider the AFOV is of the eyepiece, in my experience. And new proprietary designs come out from time to time. Fortunately, the investment can be leveraged with future scopes since eyepieces are standard sizes so they work in almost any telescope. i dont have 1 of everything, and i bought the best i could afford on a low budget; meade and orion. So, for your 30 mm, 82/60 = 1.36 degrees. When selecting the best eyepiece for you, consider: Eyepieces are standardized so whatever investment you make today, the eyepieces will continue to serve you in any future scopes you may own. Sooooo helpful! Typically, these will be 25 mm and 10 mm or something close to that. 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. Their eye relief is limited to about 70-80% of their focal length. You will get varying opinions on this but I would not worry too much about this. Looking forward to first use. In terms of eyepieces, my best advice is provided in the article. In addition, the eyepiece would be a Huygens or Ramsden design, where two lenses made of the same type of glass could be combined to yield minimal false color fringing, as long as the focal length of the telescope remained fairly long. You can find the eyepieces I use and recommend in this article. Goldline series of eyepieces provides the best value in this price range, better than Plossls. But what are the differences between these two and how do you know which one to choose? Its quite long but that is what we are aiming for and hopefully, it was useful to you. 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. Then set your maximum based on your aperture and split it up. And of course, NEVER look through a telescope pointed at the sun that does not have a safe solar filter covering the front. Is it just about finding and framing, or do wide fov EPs create a more immersive experience? Find many great new & used options and get the best deals for Meade telescope maksutov eyepiece ETX-105EC Super Plossl 6.4mm 1.25" w capsule at the best online prices at eBay! Plossl eyepieces have a wide FOV and are known for their clarity and sharpness. I hope I can say that someday. But these are only intended to get you started. If you do upgrade, youll probably want to go for a different eyepiece design than a Plosslsomething with a sharper image or a wider field of view or a longer eye relief (or all three.). Plossl eyepieces are very good and fairly inexpensive, typically between $25 and $50 each. There is the 56mm Meade Plossl which magically turns my short FL refractors into their own finder scopes. With a refractor, SCT or MCT, it is usually better to get a correct image diagonal than a correcting eyepiece. A 2 barrel on the eyepiece will allow the manufacturer to create an eyepiece that provides a wider field of view. 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. It also produces an erect image, meaning you see what youre viewing rather than seeing everything upside down or sideways as some types do. Orion Sirius Plossl 1.25" eyepieces are ideal for all types of telescopes: reflector, refractor, and catadioptrics such as Maksutov-Cassegrains. I purchased the Celestron Starsense 102mm refractor, focal length 660mm, stated highest useful magnification is 240x; it should arrive in about 2 weeks. PayPal, cash, bank transfer are all acceptable. You can do that by using this long focal length eyepiece. There are some very good choices in this range. When discussing eyepieces, you will hear people comment on how well the eyepiece is corrected. Plossls provide very good eye relief for eyeglass wearers in focal lengths of about 25mm and longer. Can You See The ISS With A Telescope? Also worth mentioning i wear glasses which I will wear while observing. 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. The one exception I would keep in mind would be when working with Newtonian reflector telescopes below F5. For example, if you put a 30 mm eyepiece in a 3X Barlow, it will triple the magnification you get from that eyepiece. I have CPC 925 and I currently own Hyperion 10mm, Hyperion 17mm and Celestron plossl 40mm. So, even if you have a Maksutov-Cassegrain scope, you should get a good experience from this eyepiece. In general terms, the higher the AFOV number, the more the eyepiece will cost. 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. 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. But the one I am recommending here is the Tele Vue Nagler series. 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. 2019-2023 Little Astronomy. How Good Are Super Plossl Eyepieces for Astronomy? As we go along, I will refer back to these, so dont worry if you cant answer the questions or understand the formulas now. It had one of the best fields, edge to edge, in my SCT that I've ever seen. I think you will love it! 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. Each eyepiece gives you a unique magnification based on the formula listed at the start: Why do you need more than two eyepieces? very happy. This is important to keep in mind because it means brands have to try really hard to one-up each other because the competition in a niche hobby such as astronomy can be fierce. The focal length range for 1.25 Plossls is about 6mm to 45mm. the reality is that today's eyepieces are all quite good, particulalarly in an f/10 telescope. Are Plossl eyepieces any good? Orion Sirius Plossl 10mm telescope eyepiece 1.25" in very good to excellent 185794462395 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. thanks Ed. Well, I'll just say it. 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. Here's the short answer - Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. In my scopes a simple zoom eyepiece like the Celestron 24-8mm or the Baader has replaced the higher powered plossls. How you divide up your magnification range is up to you. 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. For super Plossl eyepiece, the field of view is typically 40 to 60 degrees. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. 2. 600 mm / 200X = 3 mm This will be the focal length of our highest power eyepiece. 8.8 = 240 = .34 1. I have owned wider eyepieces, but ultimately I just prefer the Plssls (must be a mental defect). 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? Save my name, email, and website in this browser for the next time I comment. A typical zoom eyepiece has a focal length range of 8 mm to 24 mm. If your telescopes focal length is different, just change the focal length in the formula. Most telescopes come with one or two eyepieces. We are a reader-supported organization. These sizes have become the industrys standard sizes. They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. As the clear cut worlds best eyepiece manufacturer, their name should at least be mentioned in an article like this. For your application and the eyepieces you have or are going to get, you really dont need anything else. 20 = 90 = .8 I am very interested in viewing Nebulae do you think this set up will work well for that or do I need other eyepieces or filters? 75-225X, 1.5X Barlow 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. 1.25" Power mates with T ring adapter. I expect such eyepieces are available but I have never seen or used one. You can email me also. I agree with your comment on zooms for kids. Jupiter and Saturn are low in the sky now. So we say that an F5 scope benefits from better corrected eyepieces more than the F10 scope. Some reviews also suggest replacing the diagonal. A Plossl eyepiece has a field of view thats very wide, so if youre looking at the full moon or some other object in space with it, chances are youll see the entire thing. I need some eyepieces with long FL for low magnifications. Yes, eyepieces is a large and complex topic. If there is a local club, I would suggest you visit and consider joining. Whether it is cars or telescope eyepieces, there are inexpensive ones, upgraded models, and very expensive ones. A Kellner eyepiece has 3 lenses, while a Plossl has 4. (Focal ratio is a term that refers to the telescopes focal length divided by its aperture. 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. 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 we look at the range I provided above, we see that we could replace several eyepieces with one zoom. You alluded to them, but you never mentioned Tele Vue. From planetary viewing to deep sky watching. Oh the pain of uh having access to really cool eyepieces.). Finally, the worldwide pandemic has led to shortages and price jumps on many items.
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