Then there is the rule of thumb to avoid duplicating focal lengths when acquiring eyepieces. But these are only intended to get you started. Compared with a zoomable telescope eyepiece, they are pretty much the same in terms of the quality of the image. A Plossl eyepiece lens provides more eye relief than anything else out there! If you were considering a Meade Super Plossl, in that case just get the regular one also by Meade. Thanks in advance I really appreciate it! Kellner eyepieces have 3 lenses cemented together and have a 35-50 degree field of view. How you divide up your magnification range is up to you. Im fairly picky so would extend budget for better eyepieces if its worth it. Do you think the Baader Hyperion Zoom would work OK with the Skywatcher 150p? I must also warn you that some of these bad Plossls may actually turn out to be worse than any run-of-the-mill Kellner. For it's cost, a 32mm Plssl eyepiece is hard to beat. Disclosure: This post contains affiliate links and I may earn a small commission (at no extra cost to you) if you click through and make a purchase. 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? But some people demand the very best, and it is available, at a price. It costs a lot to get that last 10% of performance. Look at the apparent field of view specs and understand what this means for the field of view. My understanding of eyepieces was very limited until I read this article, you explain things in a clear and understandable way which made my understanding so much clearer. thanks Ed. Astromania 1.25" 4mm Plossl Telescope Eyepiece - amazon.com Take a look at your manual or users guide. In essence the design differences between Kellner and Plossl comes down to the number of lenses within the eyepiece barrel. Newer multi-coatings are better, I suppose, but newer does not always mean better in the ocular game. A Televue Plssl may be better than a generic one, but the difference is probably not worth the additional cost. 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. Worth it is a tough question to answer. I am very near-sighted, barely see the big E on the vision chart without glasses. But, at least get the 32mm Plssl. They work great every day and get you where you want to go, but dont have what the higher priced models have. Now put the zoom on a 3X barlow and you have: Using the zoom approach with a Barlow your eyepiece set would consisit of a 32 mm low power eyepiece. https://telescopicwatch.com/best-astrophotography-telescopes/. Basic question - what is a Plossl eyepiece? - Getting Started General Differences and Similarities. Lets give an example. I dont own nor have I used it, but Orion has a very good reputation. Omni 15mm Eyepiece - 1.25" Learn More. 600 mm / 200X = 3 mm This will be the focal length of our highest power eyepiece. The TFOV will be as wide as your 40mm Plssl, but with greater magnification and a slightly darker sky background. But for the targets requiring higher mag Im still undecided between: Or, if you are buying from an online like Amazon, then look at the eyepieces I recommend and see if any suit your needs. Most people prefer the wider TFOV. And remember, when all else fails, read the instructions. Orion 12 mm Sirius Super Wide Angle Correct Image Eyepiece has a rubber eyecup that holds in light, which enables you to enjoy this powerful telescope eyepiece at night without glare or reflections from any external sources. Brilliant article and I thank you for it, I was literally really confused prior to reading it. How do you focus - I would have expected helical focusers in the eyepiece holders but don't see any? 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. Plossl vs Kellner Eyepieces: Which Is The Best? - The Big Bang Optics Like going from a 32 TV to a 65? 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. Aspheric and Plossl Plossl are both lens designs that can be used in most telescopes. (often referred to as Pseudo Masuyama). Us big kids like zooms too. A 32mm Plssl is worth it. As I discussed earlier, the zoom lets you explore your target over a wide range of magnifications without having to change eyepieces. One learns by observing. What's the difference between two Plssl eyepieces? You can read a thorough review of Goldline eyepieces here. Free shipping for many products! They provide a range of magnifications with one eyepiece. I have used these in my F6 and F5 Dobs and find them a good value for the price. 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! Meade telescope maksutov eyepiece ETX-105EC Super Plossl 6.4mm 1.25" w capsule. The ocular for your highest visual acuity - for viewing deep-sky objects and the like - should have an exit pupil around . did i pass? This also makes them more resistant to any form of dust getting inside the eyepiece. 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. Age is not part of the equation. Note to spectacle wearers: Plossl eyepieces with 15mm and longer focal lengths are good choices for spectacle wearers but for shorter focal lengths the Celestron XCel LX series have greater eye-relief so are better suited. Plossls are extremely versatile and can be used for all use cases. The BHZ in a 2X Barlow will take an XT8 to 300X. Note that the price categories are approximate, as prices can vary between retailers. This is just a planning target. You see the object in a wider expanse of space with more stars. You really understood the material. I believe the 5000 UWA's are good as well. Those are significantly more expensive than the 1.25 focal lengths. 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. 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. With the XT8i I usually used the zoom configured with a 1.5X Barlow giving me a 75X to 225X which I found to be nearly perfect for that scope. With a refractor, SCT or MCT, it is usually better to get a correct image diagonal than a correcting eyepiece. https://telescopicwatch.com/orion-skyquest-xt8-intelliscope-review/. Omni 9mm Eyepiece - 1.25" Learn More. Plssl eyepieces are affordable and they're outstanding additions to amateur telescopes. Note that the Explore Scientific 68 and 82 degree eyepieces are also available in 2 size for your low power wide view requirements. 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. You are asking about a very specific eyepiece in a very specific scope combined sometimes with a Barlow. Plossl eyepieces are often included in better telescope packages as the starter eyepieces. 3. They can be recognized by a thin gold line just below the eye cup. Not really. Or take one of your eyepieces and measure across the bottom of the barrel. You can accomplish a longer eye relief by barlowing a longer f/l plossl, so that is something to think about as well. It also produces an erect image, meaning you see what youre viewing rather than seeing everything upside down or sideways as some types do. I havent addressed .965 eyepieces in the recommendations. All focal lengths offer 50 field-of-view except the 40mm which offers 42 Now looking for a couple of decent eyepieces. Number of Lenses. However, you may see them at higher prices for the short term. Required fields are marked *. In comparison, Aspherical lenses generally have no color distortion but might not work out well if the telescope user needs really high magnification. Put the zoom on the Barlow for the high range. This can be debated 100 ways, but that is my advice. Since each eye has a different focal point, I suspect pulling the eyepiece out until reaching focus and then tightening the set screw. I really enjoy usingPlssls. I cant answer that specifically as I have no experience with that eyepiece in that scope. I am looking for as much as best I can buy. Celestron Telescope Eyepieces - CHUCKHAWKS.COM Etc.? Good quality. 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. IF you like your Hyperions , you could get a 2 inch visual back and 2 inch diagonal / or 2 inch SCT diagonal and add the 31 or 36 Baader eyepieces in 2 inch . When you are shopping, if you need long eye relief, make sure you are selecting the correct ones. 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. So, for your 30 mm, 82/60 = 1.36 degrees. Understanding and using a Barlow Lens They are also really sharp. Are plossl eyepieces still worth it? Kellner Vs Plossl | What's The Difference? - Starry Nova I generally use my 40 to search for DSOs so Ill probably replace that one at some point too. https://telescopicwatch.com/celestron-8-24mm-zoom-eyepiece-review/. I often recommend the 2 in this series as excellent low-power wide view eyepieces, especially in scopes at focal ratios below F8. It doesnt matter what type of telescope you have, as long as your scope takes these standard sizes. The category is over $300 and some of these are way over $300. I usually recommend a 32 mm Plossl type eyepiece as that provides about the widest view you can achieve with a 1.25 focuser. If that is the case, it will give me another reasonably good, inexpensive zoom to recommend to beginners. Simple Plosels work well and unless you have money burning a hole in your pocket, I would start with simple affordable eyepieces. Hayppy that now I have more facts to put in my decision. Orion Sirius Plossl 10mm telescope eyepiece 1.25" in very good to excellent 185794462395 Look those up, seeing and transparency in the context of astronomy. The third choice of eyepieces is the Orion 12 mm Sirius Super Wide Angle Correct Image Eyepiece. 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. Regular Plossl eyepieces with maybe just a slightly better coating or build quality. They have a narrow AFOV but have a reputation for being very sharp.. . Also, atmospheric conditions can limit how much magnification you can use on a given night. Plssl eyepieces are good all-around performers, producing sharp images at the center of the field, but they have only four lens elements. Ever since, I have been attempting to cram in every fact about the Universe, I can find into my head. They are just OK, but I dont recommend them, especially in a low focal ratio scope. 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. Besides fov, How would you compare the optical quality of the Celestron to the Baader? 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. 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? 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. As the clear cut worlds best eyepiece manufacturer, their name should at least be mentioned in an article like this. 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. With a 130mm-F5 I would use a Plossl 32mm for its low-mag-wide-view. Any 1.25 eyepiece will work with the BH Zoom 2 adapter. 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. These eyepiecesproduce a 'standard apparent feld of view' of between 50 and 56 with most set at around 52. These are often compared to the higher priced offerings. I have four telescopes, but I use the same eyepieces in all of them. 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. The Plossl eyepiece is a type of optical system that was invented by Ernst Abbe. The Wiki article(s) were very good if anyone else is confused. I still use my 30mm Celestron Ultima fairly often with some of my telescopes. These companies rebranded them under their own names. At one time Plssls were premium eyepieces. I cannot thank you enough! High-quality Plssl eyepieces provide high contrast and sharpness across the entire field of view. We may earn commissions by recommending products on this website. Very nice article. This gives us more flexibility at the low end of the magnification range. They also have good eye relief, making them comfortable to use for extended periods. I still have it and still use it from time to time. . 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 have the 38 mm and recommend it often. Sony A7III vs A7RIII Astrophotography: Which One to Shoot Infinity! They are most useful in medium and longer focal lengths for terrestrial, planetary, and lunar viewing. I would recommend the Baader Hyperion Zoom for any telescope. Here we get into the BMW, Cadillac, Porsche, and Ferrari of eyepieces. So, basically a Plossl eyepiece is a type of eyepiece that enables the viewer to see a wider field of view than would normally be the case, but at the cost of him/her having to physically put his eye very close to the lens of the eyepiece. Kellner eyepieces work perfectly with small and medium-sized telescopes. Most telescopes come with one or two eyepieces, which gives you one or two magnification 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. I have an SCT and my eyepiece case only hasPlssls (and one Ortho) in it. 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 design of a Plossl eyepiece consists of an objective lens with one side that is convex (wider than its length) while the other side is plano-convex or flat in shape. 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. I tested out my BH zoom yesterday for the first time and it is a great eyepiece so thank you for the recommendation! This design features 4 lenses that are paired in two close-set doublets for the eye lens and the field lens. 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. Disclosure - If you buy something via our link, we may earn a commission with no additional expense to you. Im also uncertain about what to expect from an additional investment? The eye relief is the distance between your eyes and the eyepiece where you are able to view the whole image comfortably. Of course, the entire eyepiece must be manufactured and finished correctly to realize the design's full potential. You will get varying opinions on this but I would not worry too much about this. These are the workhorse eyepieces of today. 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. You have selected a very good starting telescope that will serve you for many years to come. However, for your extra money you get the finest manufacture, the best polish and coatings available. 2. In that respect, they are similar to the Explore Scientific 82 degree mentioned earlier. I also struggled to see features on both (gas bands on Jupiter and clear rings on saturn). Omni 32mm Eyepiece - 1.25" Learn More. I often recommend a 32 mm Plossl as a good low power wide view eyepiece for scopes with a 1.25 focuser. 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. But you need to know, first, if you will be wearing glasses when you observe. For the $66/$42 of these kits, you can get one or two decent eyepieces (depending on where you buy). If you are on a strict budget, this is a good choice as a zoom eyepiece. The Plossl eyepiece has 4 lenses, consisting of 2 identical double lenses. To determine a magnification range, we will start with the aperture of the telescope, the size of the front lens, or the mirror in the back. Rating (max 5): 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. I like my 38/70. 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. 75-225X, 1.5X Barlow I need some eyepieces with long FL for low magnifications. You can use the same eyepiece on planets and deep-sky objects (DSOs). However, Orion has managed to make one that is quite compatible with most styles of telescope. Typically a Barlow does not add or subtract from this, but there again we have bad Barlows and Good Barlows. Does this sound like something you would recommend based on the telescope I have? 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. Any exit pupil between 7 mm and .5 mm is just fine. 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. Plossl telescope eyepieces are the most popular type of eyepiece on the market. I often had to drop back to about 180X because of poor seeing and transparency. It allows each eyepiece to provide two magnifications. I use some plssl eyepieces, since I still have quite a few in my kit, and yes, the others are correct. the shorter the focal length eyepiece = the shorter the eye relief. Orion Sirius Plossl 10mm telescope eyepiece 1.25" $17.01 Ive read reviews about my scope. Personally I think they're still worth it. 40mm Orion Sirius Plossl Telescope Eyepiece | Orion Telescopes Tip Its almost always cheaper to buy directly from Agena Astro. OK that makes sense, many thanks. If your focuser/diagonal will accept 2 eyepieces, then I will suggest you get one or two 2 eyepieces for your low power wide view 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. Plossl vs Kellner Eyepieces. - Little Astronomy Heres the short answer Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. Again, I only do this for my low power wide views. 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. https://www.widescreen-centre.co.uk/explore-scientific-70-eyepieces.html. If well made, Plossls are bright, with good contrast, and a flat field, and excellent sharpness. Well, I'll just say it. 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. This can be very helpful for star hopping. On the inside, they are exactly the same design. I must say Im quite confused about eyepieces. Kellners are the other popular design for amateur stargazing, go ahead and check out that article if you want to dive deeper into the subject. Some experience with Baader Aspheric 31mm/36mm? - Eyepieces - Cloudy Nights How will my telescopes focal ratio affect my purchases? With regards to budget, whatever works well and is on par with the quality & capability of the telescope. Save my name, email, and website in this browser for the next time I comment. Note to spectacle wearers: Plssl eyepieces with 15mm and longer focal lengths are good choices for spectacle wearers. This will give you a maximum target for planning purposes. There are three types of Plossl eyepiece: the regular, Super, and Orthoscopic. There are certainly much better options out there but at a significant cost. Pay attention to the eye relief, especially if you will be observing with glasses. I can recommend these with confidence. A common problem are eyepiece kits, which are big boxes that some telescope suppliers will sell you with half a dozen eyepieces, most of which include annoyingly short focal length Plossl eyepieces. In our example, we targeted 200X as the top magnification. 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. 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. An Austrian inventor Georg Simon Plossl came up with the Plossl eyepiece design in 1860. Again, for no other reason than to compare it to the 17mm Hyperion and draw your own conclusions about Plssls. If you are buying your first telescope, and you are choosing between the telescope that includes a Kellner or a telescope that comes with a Plossl, with all the other specs being similar, pick the telescope thats offering you the Plossl, even if its slightly more expensive. That is why I suggest, if you can use 2 eyepieces, you will want one or two low power wide view 2 eyepieces. Scott. Recall that your lowestpower eyepiece's exit pupil should not exceed 6mm. 100-300X, 2X Barlow. If you do choose to go with a Plossl eyepiece, I highly recommend spending some extra cash to get yourself a decent good quality branded Plossl eyepiece rather than going for a cheap, generic eyepiece which is a Plossl only for the namesake. Know what diameter eyepieces your scope takes. That said, I should also tell you that not all Plossls are created equal. When I was getting my start in the hobby, I bought an ultra-cheap ($15?) 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. Within the budget-friendly realm are the 6mm and 9mm Goldlines/Redlines (66-degree Ultra-Wide-Angle) for telescopes with a focal ratio of f/8 or longer, and the excellent 58-degree Planetary eyepieces, sold by a variety of sellers on Amazon and by Agena Astro, which come in a wide variety of focal lengths and are optically superb for their price. 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. 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? I think some of these kits even include 4mm eyepieces, and thats ridiculous! 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. This was very useful, I got a meade infinity 90mm ( after read the review here -. 1200 mm FL scope / 10 mm FL eyepiece = 120X, 40 degree AFOV / 120X = .33 degrees (less than 1 full moon wide), 60 degree AFOV / 120X = .5 degree FOV (about one full moon with no space around it), 82 degree AFOV / 120X = .68 degree FOV (about one full moon with a star field around it to frame it). The Plossl's are very easy to modify, allowing me to use the bino-viewer on, all my refracting telescopes without having to cut down the tube length, p.s. 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. 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. How does that field of view impact the viewing experience? Note that the full moon appears to be approximately .5 degrees across, so use that as a mental reference when looking at the numbers. If you want to observe the fine details of a specimen, Plossl eyepiece has a higher magnification than an ocular with lower lenses. However, the BH Zoom is by far my most used eyepiece. 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. However, I have eyepieces with much smaller exit pupils and they work fine. Choosing the best eyepiece for you - Astronomy Now Kellner vs Plossl Eyepieces (Pros And Cons) - Scope The Galaxy . Generally, dont mess around with solar projection unless youre okay with damaging the instrument. A 32mm plossl eyepiece and a 2x barlow lens should be enough to give you a good range of eyepieces for every use case. It had one of the best fields, edge to edge, in my SCT that I've ever seen. What Is a Plossl Eyepiece - Planet Seekers As said, they are cheap to compare. For example, if you put a 30 mm eyepiece in a 3X Barlow, it will triple the magnification you get from that eyepiece.

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