This will give you a maximum target for planning purposes. They have decent eye relief and little curvature of field. Unless you are a professional astronomer or extremely demanding, you can select your eyepieces based on magnification, the apparent field of view, eye relief, and price. . But these are only intended to get you started. This number can range from 30 degrees to 120 degrees. Stargazing Help is a participant in Amazon Associates program. By the 1980s, amateur astronomy equipment suppliers were still selling new telescopes with Huygens and Ramsden eyepieces, not merely because they were cheap but because they lacked internal reflections. Both solutions offer somewhat similar mag-fov-er-price. They are 82-degree AFOV eyepieces. The more light that is gathered, the more magnification that can be applied to the image, up to the limits that are imposed by the atmosphere. A wide-angle view of 66 degrees makes it perfect for viewing large objects and even entire constellations while still being able to focus on smaller details with ease. Sorry but I am not offering a configuration and pricing service. For one thing, a wider field of view is almost always more pleasant. In retrospect, I should have included Tele Vue. Thinking in a super ploss 32mm and maybe something between 9mm and 15mm . And remember, when all else fails, read the instructions. Am I correct? It also was considerably more expensive. Most people prefer the wider TFOV. So, for your 30 mm, 82/60 = 1.36 degrees. Ive added comments on where you may find and use them. Does having a 70 vs 52 fov make a noticeable difference for double the price? I would suggest you also get a 2 low power wide view. Kellner eyepieces work perfectly with small and medium-sized telescopes. In your case, I would do this for the 30 and the 20. 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. Are there any good low-cost 2 EPS out there? 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. Higher than 3X is usually reserved for astrophotography. They also offer a generous 16 mm of eye relief which is most important in the shorter focal lengths. At one time Plssls were premium eyepieces. Aspheric eyepiece is a variation of Plossl design, it has an anti-reflection coating on the front glass surface to ensure maximum light transmission and will also provide your instrument with better quality images if you need higher magnification levels. A key thing to remember is that eyepieces are universal. Well-made lenses are expensive though, so in general the more lenses, the higher the price of the eyepiece. 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 . Glad you found it helpful. Theres a wide range of quality when it comes to Plossls and trusting the brand you are getting one from matters a lot if you dont want to get an eyepiece with lots of reflection or optical issues. At shorter focal lengths they have less eye relief, and at all focal lengths they have a narrower field of view, than newer types. Omni 56mm Eyepiece - 2" Learn More. In this case, I am going to define this by the focuser and eyepiece size. I also have an older smoothtop 20mm Meade 4000 that is also 5 element, and it is a fine eyepiece too, compared to another 20mm of the same vintage. 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. It is all about your budget, your goals, and your objectives, as outlined in the article. They work great every day and get you where you want to go, but dont have what the higher priced models have. However, the BH Zoom is by far my most used eyepiece. I need some eyepieces with long FL for low magnifications. still, i somehow managed to avoid the eyepiece pitfalls when buying used off ebay. Meanwhile, Plossl eyepieces are much more common and easy to find. This can be very helpful for star hopping. Note that the price categories are approximate, as prices can vary between retailers. I agree. And certainly, if you are getting into AP you are going to need that big budget. Super Plossls offer a smaller field of view, which makes them good for close-up views and examining small objects. In essence the design differences between Kellner and Plossl comes down to the number of lenses within the eyepiece barrel. I also have a 25mm plossl and am happy with that. If I had to give them all up and keep only one eyepiece, It would be the BH Zoom. Note that the Explore Scientific 68 and 82 degree eyepieces are also available in 2 size for your low power wide view requirements. Good quality. I have Celestron and the Baader Hyperion. Get to know more about us here. Today, most beginner telescopes of any quality are sold with either Kellner or Plossl eyepieces. It costs three to four times as much as the Celestron Zoom, but if you have the budget, this is the one to get. A large field lens makes the ocular easy to look into. Again, for no other reason than to compare it to the 17mm Hyperion and draw your own conclusions about Plssls. The telescope comes with a 2x Barlow so I was thinking of getting one of the zooms you recommended. For astronomical observations, such as viewing craters on the moons surface from Earth, high-magnification models are preferred because they offer more detail. The components of a Plossl eyepiece are the two groups of lenses. They have a narrow AFOV but have a reputation for being very sharp.. When you are shopping, if you need long eye relief, make sure you are selecting the correct ones. I had a TV 20mm Plossl once. I guess my curiosity is mostly about the diagonal. Below .5 mm exit pupil, floaters in the eye become more apparent and can be bothersome. The focal length range for 1.25 Plossls is about 6mm to 45mm. 1.25" Power mates with T ring adapter. I havent been into the hobby for long but my experience is in line with whats been said. As said, they are cheap to compare. Then you can judge for yourself if it is worth it. Kellners can be as little as half the price of a Plossl in the same focal length, but they are generally very comparable, especially in recent years as telescope prices have fluctuated in response to changing supply chains and demand. 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. I beleive this is the same as they ones you asked about. Conclusion. Celestron 2026 Erecting Prism Barlow Lens Set is another great choice for those looking to get a variety of magnifications. Can you suggest the total . A Kellner eyepiece has 1 double lens and 1 single lens. Very often, those eyepieces will be in the outdated 0.965 format rather than the modern 1.25 or 2 diameter barrel format. 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. Over $250, I will label premium eyepieces. About Us | Privacy Policy | ContactLittle Astronomy 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. I just added the 4.7 mm. The Hexagon Zoom Eyepiece is made from durable plastic material that resists scratching and it has an eye relief distance of 15mm. 100-300X, 2X Barlow. Even if the scope comes with the more acceptable Kelner or . You noted eye relief is important for those wearing glasses. Tele Vue has eyepieces that approach $1000. Under my sky it was rare that I would be able to get over 225X and still maintain a good quality image, except on the Moon. philhas Members 61 459 Location: North East England Plossls tend to come with large, ground-standing Dobsonians, whereas youre more likely to find a Kellner sold with a tabletop Dobsonian. These eyepieces have about 35 to 50 degrees apparent fields of view and reasonable eye relief, though quite short for high magnifications. 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. As we go up in price range, we gain capabilities that may not be immediately obvious. Even big telescopes are subject to limitations imposed by the atmosphere. A Kellner eyepiece has 3 lenses, while a Plossl has 4. Most people will be fairly comfortable with eye relief of 12 mm or higher. How do you focus - I would have expected helical focusers in the eyepiece holders but don't see any? These lenses are connected together. ORION SIRIUS PLOSSL 10mm telescope eyepiece 1.25" - $17.01. In this article, we will only focus on the differences between Plossl and Kellner eyepieces. Because of this setup, you might also hear a Plossl eyepiece referred to as a symmetrical eyepiece. For the price, I think the eyepiece is still a good pick. Most telescopes come with one or two eyepieces, which gives you one or two magnification options. We may earn commissions by recommending products on this website. a Celestron 8-24 Zoom with a 2x Barlow Buy Astromania 1.25" 4mm Plossl Telescope Eyepiece - 4-Element Plossl Design . Cheap to try, and if you don't like it, easy enough to sell also. Kellner eyepieces were first designed by Carl Kellner in 1849. You could base this on 3, 4, 5, 6 or more focal lengths/magnifications. It should list what size eyepieces you can use. All focal lengths offer 50 field-of-view except the 40mm which offers 42 Look those up, seeing and transparency in the context of astronomy. 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. We also joined our local Astronomy Club and look forward to joining others under the night sky when the opportunity presents itself again. Lenses are fully multi-coated for excellent light transmission and reduced internal reflections. 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. They are all 4-element Plossl eyepieces, and most have a 52-degree field of view that is common to the Plossl design. Thanks, Angelo M. You picked a great first scope. They deliver sharp images in almost all telescopes. This is where the second formula comes into play. What should one opt for a 2 EP over a 1.25? Since each eye has a different focal point, I suspect pulling the eyepiece out until reaching focus and then tightening the set screw. You will see these under many brands, including Orion, Celestron, GSO, and others. You can do the calculation which will show that the 70 will have a significantly wider field of view as compared to the 52. Since there are so many different types of eyepieces available on the market, choosing the right one for your situation can prove to be a harrowing task. > Click here to jump to the Best Eyepieces section. I am not aware of any such solutions for Newtonian reflectors. 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. When I was getting my start in the hobby, I bought an ultra-cheap ($15?) How will my telescopes focal ratio affect my purchases? There is no problem using a Celestron eyepiece in a Meade telescope, for example. I think you will love it! Plssl eyepieces are affordable and they're outstanding additions to amateur telescopes. 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Stargazing Help came into existence when some young minds got mesmerized by outer space while camping. https://telescopicwatch.com/celestron-8-24mm-zoom-eyepiece-review/. Not everything in the sky benefits from high magnification. Despite one being fundamentally superior to the other in terms of image correction, Kellners and Plossls are generally quite comparable in terms of the image you actually see. Are Plossl eyepieces any good? Is it just about finding and framing, or do wide fov EPs create a more immersive experience? 1:10 . 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. As you learn more about astronomy and you gain more experience with time, you may want to move to Plossls or even higher-quality eyepieces. However, Orion has managed to make one that is quite compatible with most styles of telescope. Also, atmospheric conditions can limit how much magnification you can use on a given night. I would like to know what is best for a 7 year old that would be getting his first telescope. Some accept 2 and have an adapter that allows you to also use 1.25. Again, this is more noticeable in lower focal ratio scopes. 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. 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. 6mm Kellner eyepiece that I enjoyed a lot. The Japan made 16mm Meade 3000 was a very nice medium power plossl and the 40mm in that series was surprisingly nice as well. I purchased the Celestron Starsense 102mm refractor, focal length 660mm, stated highest useful magnification is 240x; it should arrive in about 2 weeks. Tele Vue offers several series with apparent fields of view from 50 degrees to 120 degrees. All registered. Was compairing the Apertura standard 15mm Plossl with their 15mm super wide angle eyepiece (70 afov). It comes with 1.25 Plossls 25mm (26x) and 10mm (66x) eyepieces. But I think you will feel more confident about your purchases and be less likely to be disappointed if you read through the guide. Best Telescopes For 10 Year Old Kids: Reviews and Buying Guide, The Complete Guide to the Planets You Can See With a Telescope, The Best Barlow Lenses: Reviews and Buying Guide. Every new skill takes time. 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. 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. Excellent article, thank you very much for taking the time to publish it. The Big Bang Optics was started because of our love for astronomy and to help others like us find the best telescope and accessories. They also improve a bit when it comes to eye relief. As is outstanding in the workmanship, a Plossl type eyepiece is a moderately wide field eyepiece involving two colorless doublets in which the crown components generally face each other. Fully coated optics provide crisp and bright views of the cosmos. Yes, Plossl eyepieces are some of the most popular with amateurs and professionals alike. However, your budget must guide your purchases.