If that is the case, it will give me another reasonably good, inexpensive zoom to recommend to beginners. No, adapters are not needed but they may come in handy when you want to change the focal length or add other lenses such as filters or Barlow lenses. They have good center sharpness but exhibit some field curvature and astigmatism. Finally, a wider field of view just makes it easier to find stuff. . I dont dabble in AP. But the one I am recommending here is the Tele Vue Nagler series. https://telescopicwatch.com/celestron-8-24mm-zoom-eyepiece-review/. 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. The Big Bang Optics was started because of our love for astronomy and to help others like us find the best telescope and accessories. Perhaps you have read about planetary eyepieces, DSO eyepieces, and other types of specific 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! Field of view, is about finding, framing, drift time, and context. No price limit. And, the quality of the eyepiece clearly comes into play here. Apparent Field of View: This is a measure of how wide a view the eyepiece will provide as compared to alternate eyepieces. Astrophotography with Nikon D3200: Can It Be Better? On many occasions, that will be too high power for the atmospheric conditions. Most telescopes come with one or two eyepieces. Also, note that the pricing is based on 1.25 eyepieces. Yes, eyepieces is a large and complex topic. Visual astronomy is all about aperture, the more the better. Take a look at your manual or users guide. Oh the pain of uh having access to really cool eyepieces.). 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. A standard Plossl eyepiece is typically between 20mm to 25mm but can range anywhere from 15mm up to about 40mm in diameter. It is pretty much worth it for everyone that has a telescope with a 1.25 inch focuser to have a 32mm Plssl. Edited April 23, 2010 by russ teh_orph Members 28 198 Author One of the TMB Planetary eyepieces are extremely nice for 50. Also, children do not often have highly developed motor skillsso I would avoid the frustration of switching out eyepieces, and consider a zoom lens. My other eyepieces, ES and Meade 82 degree, stayed in the eyepiece case most of the time. Other brands have joined and have used the Super Plossl label, but they all keep the original 4-piece design. They are not that expensive I would pay about $100 for both eye pieces. I am not aware of any such solutions for Newtonian reflectors. While it covers the same range as the Celestron zoom, it offers better optics, better mechanical operation, and a wider field of view. 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. You use the 8-24 zoom for the midrange. A Barlow lens is an optical device that goes between the eyepiece and the focuser. At 32mm, a Plssl will give you as wide a field of view as any 1.25mm eyepiece can. I tested out my BH zoom yesterday for the first time and it is a great eyepiece so thank you for the recommendation! I have seen elsewhere discussions about the exit pupil of eyepieces. Orion Q70 38 mm works well. I wants to install one in house(fixed place) another I need movable. But, if you have a plan, you can fill in those slots, working toward a well-balanced set of magnifications. Celestron Telescope Eyepieces - CHUCKHAWKS.COM If we look at the range I provided above, we see that we could replace several eyepieces with one zoom. philhas Members 61 459 Location: North East England 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! However, there can be a problem bringing the eyepiece into focus. Despite the narrow field of view and short eye relief, it showed shockingly good views of Saturn, Jupiter, and even the Moon. 32 mm = 18.75X 16 mm = 37.5X (32 mm eyepiece with a 2X barlow), 12 mm = 50X (If you have a 25 mm that came with your scope, use Barlow for 12.5 mm), 4 mm = 150X (8 mm eyepiece with a 2X Barlow), 3 mm = 200X (6 mm eyepiece with a 2X Barlow), 24 mm = 25X (the low power end of the zoom), 8 mm = 75X (24 mm zoom setting in a 3X Barlow), 2.66 mm = 225X (8 mm zoom setting in a 3X Barlow), True field of view or FOV = Apparent field of view (AFOV) eyepiece / magnification. Kellner eyepieces work perfectly with small and medium-sized telescopes. A 6mm Plossl has a tiny eye lens. The larger barrel allows them to create an eyepiece with a higher AFOV. 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. I am going to use 6. 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. 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. The combination of high-quality optics and accessible prices have made them the favorite design for amateur astronomers and even professionals. The 21mm is simply amazing, I can't believe that TV decided to discontinue this little gem, it is better than the newer version in every category including eye comfort, the overall shape along with fit and finish is one of the best from TV. Even if the scope comes with the more acceptable Kelner or . I am considering buying another eyepiece, maybe 6mm, and a Barlow, maybe 2x, to give me a wider and higher range of magnification. > Click here to jump to the Best Eyepieces section. All registered. A Kellner eyepiece has 1 double lens and 1 single lens. 50 150X, no Barlow It costs a lot to get that last 10% of performance. Now, for my one or two low power eyepieces, I also like to know the field of view provided by that eyepiece. It was grueling, because I couldnt even get the entire field of viewI had to keep my eye hovering above the exit pupil. And I am a visually observing focused person. Best suited for telescopes with f-ratios f6 or slower. Simple Plosels work well and unless you have money burning a hole in your pocket, I would start with simple affordable eyepieces. But you may only be able to achieve that rarely. This is why many telescopes come standard with at least one Plossl eyepiece. Celestron 2026 Erecting Prism Barlow Lens Set is another great choice for those looking to get a variety of magnifications. 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. Second? If we want to get VERY specific to a combination then inherent aberrations of this scope and that eyepiece could produce a unique result. A rubber safety cap protects the lens when not in use while also providing additional grip on this 35 mm Plossl eyepiece. Another really helpful article, Ed. Of course, for the cost of the two Plossls, you could justify having them as spares or outreach EPs. My Meade 4000 56 and 60 degree Meade Plossls are pretty sharp to my eyes and do pretty well for me. Meade telescope maksutov eyepiece ETX-105EC Super Plossl 6.4mm 1.25" w Choose three focal lengths. As to a more immersive experience, yes, I would say a wider FOV does provide a more immersive experience. Celestron Omni Eyepieces: The Omni series is the most economical eyepiece offering from Celestron. They also offer more eye relief than Plossls at the shorter focal lengths. AP is all about the mount and accurate tracking. They can be recognized by a thin gold line just below the eye cup. It also produces an erect image, meaning you see what youre viewing rather than seeing everything upside down or sideways as some types do. And new proprietary designs come out from time to time. Every new skill takes time. It all comes down to cost-benefit. The Plossl eyepiece is a type of optical system that was invented by Ernst Abbe. By default, expect a 40-degree field of view in a Kellner and a 50-52 degree field of view in a Plossl. 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. Do you need to have the best to enjoy astronomy? 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. Pentax 10.5mm Eye Piece Excellent Condition (#314374986239) r***d (1910 . That is a wonderful expression. Lets look at the minimum. 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. You could base this on 3, 4, 5, 6 or more focal lengths/magnifications. I have to say that your questions are answered in the article. Thanks for your comment. None of my fancy EPs have enough contrast for this application. They are all made by the same OEM manufacturer. Most telescopes come with one or two eyepieces, which gives you one or two magnification options. A Plssl is probably as good as any 32mm eyepiece in a 1.25 inch focuser. We also joined our local Astronomy Club and look forward to joining others under the night sky when the opportunity presents itself again. On the inside, they are exactly the same design. Kellner eyepieces were first designed by Carl Kellner in 1849. It allows each eyepiece to provide two magnifications. How important a consideration is this when deciding on an eyepiece? Again, does it create a more immersive viewing experience? So, I am going to organize the guide around five questions and four formulas. Very often, those eyepieces will be in the outdated 0.965 format rather than the modern 1.25 or 2 diameter barrel format. This SVBONY eyepiece review should get you up to speed with the budget stargazing options. They are most useful in medium and longer focal lengths for terrestrial, planetary, and lunar viewing. 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. 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. This is a fairly inexpensive zoom that I wanted to try. Amazon.com : SVBONY SV137 Barlow Lens 1.25 Inch 2X Barlow Lens Metal You can do the calculation which will show that the 70 will have a significantly wider field of view as compared to the 52. If you had to choose 1 low-power 2 EP for chasing deep sky objects (again, at 600mm f7.5), what size piece would you go for? A long eye relief is also important for those who wear eyeglasses at the eyepiece, whether thats a member of the general public at a star party or an astronomer with astigmatism, which, unlike near- or far-sightedness, cannot be corrected with the telescopes own focuser. Whether it is cars or telescope eyepieces, there are inexpensive ones, upgraded models, and very expensive ones. Jupiter and Saturn are low in the sky now. How will my telescopes focal ratio affect my purchases? 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, at least get the 32mm Plssl. 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. 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. Though not the Meade. Today, most beginner telescopes of any quality are sold with either Kellner or Plossl eyepieces. Your email address will not be published. Their 50 to 52 degree AFOV is wide enough for general observing. This was my first zoom eyepiece and the one that caused me to fall in love with zoom. I often recommend the use of a barlow to achieve the higher range of magnifications. So, I think it worth your while to try the Plssls. Interesting points Philip. However, your budget must guide your purchases. When you are shopping, if you need long eye relief, make sure you are selecting the correct ones. Aspheric and Plossl Plossl are both lens designs that can be used in most telescopes. Eyepiece Field of View Simulator astronomy.tools Field of View Simulator Change Telescope Reset Change Target Add Equipment 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. I just ordered Hyperion 13mm and 21mm but I really like how sharp and crisp view is in plossl 40mm. Newer multi-coatings are better, I suppose, but newer does not always mean better in the ocular game. Required fields are marked *. Tip Its almost always cheaper to buy directly from Agena Astro. Get to know more about us here. In 1860, Georg Simon Plossl invented the Plossl eyepiece. I have personally tested a few Super Plossl and compared them to their regular counterparts by the same brand. Most people prefer the wider TFOV. I have seen some gatekeeping in this hobby about Kellners, and Im not sure I understand it. 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. Of course, the entire eyepiece must be manufactured and finished correctly to realize the design's full potential. Soft rubber eye guard that's custom fitted . Another way to look at it is that a 30 mm eyepiece in a 3X Barlow works like a 10 mm eyepiece. I had one and sold it. Other eyepieces of more advanced design can have better eye relief and field of view. 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. very happy. What happens if you use an eyepiece that has a the wrong exit pupil? Overall, I would highly recommend the goldline eyepieces. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. I have the 38 mm and recommend it often. To achieve six magnifications, you can have six eyepieces. 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. In the case of the Celestron, you get all the focal lengths from 24 to 8mm in one eyepiece that costs $100. These will eventually be used in an 8in dob whenever it arrives. 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 are new around here and you want to get started with the hobby, check out our astronomy for beginners guide or the recommended gear page. At least you'll have one budget eyepiece that will give you a larger part of the sky at low magnification. The "sharpness" you are seeing may well be better explained by the focal length of the ep than the quality of Plossls in general. 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. 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. What focal length eyepieces should I buy? So perhaps you do your line up like this. I want these as possible as wide, magnification and astrophotography purpose. Outstanding job Jack. If you are on a strict budget, this is a good choice as a zoom eyepiece. Lower power almost always looks better than higher power. 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. It doesnt matter what type of telescope you have, as long as your scope takes these standard sizes. My Barlow is a 2X with a removeable Barlow element that can be screwed right onto an eyepiece giving a 1.5X effect. I think some of these kits even include 4mm eyepieces, and thats ridiculous! With a 130mm-F5 I would use a Plossl 32mm for its low-mag-wide-view. Or take one of your eyepieces and measure across the bottom of the barrel. The field of view of the eyepiece has a few effects when it comes to actually using it in the telescope. no caps come in bolt case. These are just a few examples of eyepieces that I have used, and some that I own. 40mm Orion Sirius Plossl Telescope Eyepiece | Orion Telescopes They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. Kellner eyepieces use three glass elements in two groups to minimize color fringing. Sony A7III vs A7RIII Astrophotography: Which One to Shoot Infinity! Age is not part of the equation. 8.8 = 240 = .34 Compared with a zoomable telescope eyepiece, they are pretty much the same in terms of the quality of the image. She has been looking at the sky for years and hopes to introduce more people to the wonderful hobby that is astronomy. A key thing to remember is that eyepieces are universal. The Hyperions work well in SCTs and you can't beat that large eyelens and eye relief ,JMO. I once had to use a 6mm Plossl to attempt to perform a star-test collimation for a telescope at the observatory. This doublet design has an apparent field of view of 50-degrees or wider but can suffer from short eye relief making them difficult to use for some . 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. Note to spectacle wearers: Plssl eyepieces with 15mm and longer focal lengths are good choices for spectacle wearers. https://telescopicwatch.com/celestron-starsense-explorer-dx-102-130-reviewed/, If I was to upgrade these lenses, I was planning on working toward something like this: Etc.? 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 like my 38/70. In my scopes a simple zoom eyepiece like the Celestron 24-8mm or the Baader has replaced the higher powered plossls. Plossl vs Super Plossl Eyepieces: The Differences - Stargazing Help A couple of them felt fancier, but the jump in performance was either insignificant or non-existent. 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. 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. Meanwhile, Plossl eyepieces are much more common and easy to find. I expect such eyepieces are available but I have never seen or used one. You are asking about a very specific eyepiece in a very specific scope combined sometimes with a Barlow. The 50 apparent field of view is plenty for me. Higher priced eyepieces usually include more elements in the optical path that are there to help reduce or eliminate aberrations that can be seen around the edges of lower cost eyepieces. You are talking about the technical details of how a Barlow works, and I agree. I have CPC 925 and I currently own Hyperion 10mm, Hyperion 17mm and Celestron plossl 40mm. If you are investing for the future, get the BH zoom. But some people demand the very best, and it is available, at a price. This is a good thing, because normally the shorter the focal length of the eyepiece, the less eye relief you have. Kellner eyepieces have 3 lenses cemented together and have a 35-50 degree field of view. Also, atmospheric conditions can limit how much magnification you can use on a given night. They deliver sharp images in almost all telescopes. Top 10 Best Best Plossl Eyepieces 2023 - Complete Buying Guide 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. 32mm (20x & 40x). But your point is well taken. Thanks for going through the entire post. The Big Bang Optics is compensated for referring traffic and business to these companies. short answer: yes. In the world of eyepieces, when you want the very best, turn to Tele Vue, but be prepared to pay a truly premium price. The ES 82s are my favorite eyepieces, especially in the 1.25 format. 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. Omni 6mm Eyepiece - 1.25" Learn More. These have the advantage that the front section with the optics can be unthreaded and threaded on to the filter threads of a 1.25 inch eyepiece. Meade 32mm 2" 5-element Super Plossl Wide Field Eyepiece This series of eyepieces may provide better value in this price range. Read the full Earning Disclosure here. With your glasses on, you simply cant get your eye close enough to an eyepiece that only has 10 mm of eye relief. 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? They also offer a generous 16 mm of eye relief which is most important in the shorter focal lengths. All the rest will likely be 1.25. From planetary viewing to deep sky watching. The bottom line is that it is best to have several magnification choices so you can optimize the view. Your email address will not be published. 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. 2019-2023 Little Astronomy. It's no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. For your application and the eyepieces you have or are going to get, you really dont need anything else. As I discussed earlier, the zoom lets you explore your target over a wide range of magnifications without having to change eyepieces. As Im sure you know, a Barlow actually narrows the cone of light that enters the eyepiece, hence it affects the apparent focal length and thus the f/ratio of the telescope objective. We will use 10 mm as the eyepiece focal length, but we will look at three different 10 mm eyepieces, each with a different apparent field of view, AFOV.
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