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But will the Baader CO with 1.5-2-3x Barlows deliver a visibly sharper and more contrast view of the Moon and planets than the zoom lens with a 2x Barlow, to compensate for the zooms convenience that is the question! Tele Vue has eyepieces that approach $1000. For super Plossl eyepiece, the field of view is typically 40 to 60 degrees. . Other eyepieces of more advanced design can have better eye relief and field of view. 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. Plossl eyepieces have an eye relief equal to about 80% of their focal length. Though not the Meade. In retrospect, I should have included Tele Vue. This Super Plossl design was better than regular Plossl eyepieces, but not by much. . Ive read, and re-read, and re-re-read this page. A typical zoom eyepiece has a focal length range of 8 mm to 24 mm. In your case, I would do this for the 30 and the 20. Celestron Omni Plossl Eyepiece | First Light Optics Gosky Plossl 40 mm Telescope Eyepiece - 1.25inch This is probably the worst eyepiece I can recommend. In the case of the Celestron, you get all the focal lengths from 24 to 8mm in one eyepiece that costs $100. Plossl eyepiece is good for astronomy and microscopy. Understanding and using a Barlow Lens Scott. 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. Something in the 30 to 38 mm range with a 65 to 70 degree AFOV. > Click here to jump to the Best Eyepieces section. My other eyepieces, ES and Meade 82 degree, stayed in the eyepiece case most of the time. You really understood the material. This is where the cheap eyepiece will frequently fail to deliver a good image, around the edges. Im just starting out with astronomy and this really helped my understanding. 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. I like my 38/70. 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. It appears to be a custom-made 90 degree binocular built from two 90 degree diagonals and binocular-size objectives attached in place of the usual OTA. 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. The one exception I would keep in mind would be when working with Newtonian reflector telescopes below F5. While I also have the Baader Hyperion Zoom, mentioned later, I continue to make use of the Celestron, especially in my smaller scopes. Even if the scope comes with the more acceptable Kelner or . The price can run to over $1000 per eyepiece. Not everything in the sky benefits from high magnification. The sharp/crisp view you get from your 40mm Plossl comes down to the relatively low magnification it provides. I had a TV 20mm Plossl once. 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. Higher than 3X is usually reserved for astrophotography. If that is the case, it will give me another reasonably good, inexpensive zoom to recommend to beginners. Here we have very good eyepieces with some extra features. Learn more about our story and the team behind the scene. You alluded to them, but you never mentioned Tele Vue. 2019-2023 Little Astronomy. By having a range of magnifications, you can optimize the image, which means you need more eyepieces. Their 50 to 52 degree AFOV is wide enough for general observing. They are all made by the same OEM manufacturer. We have compared Plossl against Kellner eyepieces in a previous article. In simple terms, high focal ratio scopes, say those over F6, tend to be less demanding on eyepieces than those below F6. still, i somehow managed to avoid the eyepiece pitfalls when buying used off ebay. As we continue, what would you recommend adding first? 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. Generally, to maximize the number of stars you see in an eyepiece with a given telescope, both the magnification and field of view should be maximized. If you read the article you know how to calculate the magnification and field of view. Celestron 2026 Erecting Prism Barlow Lens Set is well suited as an astronomical viewing lens kit or for enjoying terrestrial sights like nature walks, sporting events, and more! 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. That is a wonderful expression. Many thanks, Sophie. Plossl eyepieces are perfect for astronomical viewing because the field of view is wider. 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 . 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. 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. 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. 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 these are only intended to get you started. 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. 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. The Big Bang Optics was started because of our love for astronomy and to help others like us find the best telescope and accessories. Plossl eyepieces are very good and fairly inexpensive, typically between $25 and $50 each. I have an SCT and my eyepiece case only hasPlssls (and one Ortho) in it. However, your budget must guide your purchases. When discussing eyepieces, you will hear people comment on how well the eyepiece is corrected. But what are the differences between these two and how do you know which one to choose? Plossl eyepiece is one of the reasonable options when it comes to telescope eyepieces for stargazing or astronomy. The difference in TFOV will be significant at this focal length. very happy. Plossl eyepieces have a wide FOV and are known for their clarity and sharpness. But the one I am recommending here is the Tele Vue Nagler series. 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? Again, I only do this for my low power wide views. Those that still come with Huygens and Ramsdens are generally cheap and low quality, since practically the only reason to use those designs in modern times is that they are extremely cheap to manufacture. Best Telescope Eyepieces 2022 (TOP 7 Reviews) - Buyer's Guide The only reason it's in this list because of its price and a long focal point. Astrophotography with Nikon D3200: Can It Be Better? At 32mm, a Plssl will give you as wide a field of view as any 1.25mm eyepiece can. I also just bought the Celestron Starsense 102mm refractor (650mm focal length, f/6.5) as a first scope for me and my kids. The result in magnification is the same and the eye relief associated with the eyepiece is retained or, in some cases, actually lengthened a bit. I often had to drop back to about 180X because of poor seeing and transparency. The components of a Plossl eyepiece are the two groups of lenses. All focal lengths offer 50 field-of-view except the 40mm which offers 42 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. Today, most beginner telescopes of any quality are sold with either Kellner or Plossl eyepieces. LCAS - The Good Old Plossl Eyepiece Can you give me any specific recommendations on what to buy and from where? This is a fairly inexpensive zoom that I wanted to try. Nothing will stop you from trying to go higher, but in all likelihood, the image will be poor and not worth the cost of eyepieces to achieve it. Looking forward to first use. I want these as possible as wide, magnification and astrophotography purpose. No price limit? Take the AFOV of the eyepiece (provided by the mfg) in your case 82 degrees This number can range from 30 degrees to 120 degrees. What's the difference between two Plssl eyepieces? At this point, a Plossl and a Kellner are so close in price and performance that you may as well get the Plossl. eyepiece shows signs of use with caps and bolt case, 32 mm Plossl very good cond. Generally, dont mess around with solar projection unless youre okay with damaging the instrument. I am not aware of an ES branded 70 degree series in the USA, but they do have a Bresser branded 70-degree series. To say it a different way, in general, an F5 scope will place more demands on the eyepiece around the edge of the field of view than an F10 scope. It comes with 1.25 Plossls 25mm (26x) and 10mm (66x) eyepieces. No price limit. Most modern telescopes use a focuser, or diagonal, that accepts 1.25 eyepieces. The generic GSO Plssl from many manufacturers, including Astronomics (Astro Tech) and Agnena Astro, is as good as the Celestron and a few bucks cheaper. Explore Scientific, like many eyepiece providers, have higher-priced and budget lines. Thank you so much for taking the time to provide all this information! Are Plossl eyepieces good? In comparison, Aspherical lenses generally have no color distortion but might not work out well if the telescope user needs really high magnification. What follows are specific eyepieces that I have tried, own, or have read so many good reports about that I feel very comfortable recommending them. On many occasions, that will be too high power for the atmospheric conditions. 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. Of course, the entire eyepiece must be manufactured and finished correctly to realize the design's full potential. Videos for related products. Buy Astromania 1.25" 4mm Plossl Telescope Eyepiece - 4-Element Plossl Design . In High School, they told me that F=MA In college I learned that F=dp/dt But F=MA works well enough for most situations and that is how I think of it. A 15mm Plssl might be worth it, if you dont wear glasses. https://telescopicwatch.com/celestron-8-24mm-zoom-eyepiece-review/. 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. Thanks for going through the entire post. This is my all-time favorite eyepiece and the one I use more than all the others put together. All registered. That is why I suggest, if you can use 2 eyepieces, you will want one or two low power wide view 2 eyepieces. NEW. Tele Vue offers several series with apparent fields of view from 50 degrees to 120 degrees. My most used eyepiece is an 8-24 mm zoom. Note that we also gained a 16 mm magnification at no additional cost. OHHH, now i get it! Ever since, I have been attempting to cram in every fact about the Universe, I can find into my head. An exit pupil larger than 6 mm may start to show a shadow of the secondary mirror. Note that the Explore Scientific 68 and 82 degree eyepieces are also available in 2 size for your low power wide view requirements. These come in focal lengths from 2.3 mm to 25 mm. Sooooo helpful! Omni 12mm Eyepiece - 1.25" Learn More. now it all makes sense, you did a great job explaining all this information it was a lot to take in but i have it now. Then you can judge for yourself if it is worth it. I think you will love it! On the inside, they are exactly the same design. If you want to buy him $200 eyepieces so he can grow into them, that works. I dont think so. I do not miss beating my eyelashes against a 9.7mm Meade Plossl that I used to own. 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. 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. Combining a cheap eyepiece with a cheap barlow isn't a elegant solution. For shorter focal lengths, the StarGuider BST series eyepieces have greater eye-relief, so are better suited. I beleive this is the same as they ones you asked about. It may be a bit less than that in reality but for practical purposes that is close enough. But for AP you should really start your planning with the mount. If you feel the need to buy something now, consider this Orion diagonal. However, the BH Zoom is by far my most used eyepiece. Meade 32mm 2" 5-element Super Plossl Wide Field Eyepiece In the 1990s Meade instruments came up with a new design for the Meade 4000 line similar to Plossl that added a fifth glass element on top of the two pairs (4 total). If you go this route, you can always add single focal length eyepieces along the way to serve specialized purposes. In my scopes a simple zoom eyepiece like the Celestron 24-8mm or the Baader has replaced the higher powered plossls. So your 600 mm example (f/6) becomes, in effect, an 1800 mm focal length, f/18 but it does not change the focal length of the eyepiece. This type of design provides for both total magnifications as well as an erect image with little distortion. If you are on a strict budget, this is a good choice as a zoom eyepiece. Both will provide the same magnification. Edited April 23, 2010 by russ teh_orph Members 28 198 Author Im fairly picky so would extend budget for better eyepieces if its worth it. Even though there are more sophisticated types of EPs, Plossls hit the right spot between high-quality optics and price. 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. AP is all about the mount and accurate tracking. Once we are done, they will make sense. One more thing if you havent purchased a telescope yet, I would recommend a tabletop version, since they are easier for kids to move than the fiddley ones with spindly legs and complicated dials. Thanks, Angelo M. You picked a great first scope. Is there much of a difference between the celestron and haader? 1:10 . Come join the newest, most engaging and inclusive astronomy forum geared for beginners and advanced telescope users, astrophotography devotees, plus check out our "Astro" goods vendors. We will now discuss the specifications of eye relief and apparent field of view. Ive read reviews about my scope. The Plossl was also called a Kellner Type III in some earlier references; in the 1950's, Edmund Scientific sold a "Kellner" eyepiece made from war surplus lenses, but it actually consisted of two achromats in the classic Plossl configuration. Plossls are extremely versatile and can be used for all use cases. 6mm Kellner eyepiece that I enjoyed a lot. So its best for use during duller times when there isnt much brightness visible. Excellent, thank you for the breakdown, very much appreciated. This might contain more of what you need. 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. Best Telescope Eyepieces For Viewing Planets [Top 8 Picks For 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. Edge sharpness is just satisfactory, nothing to boast about, as is the apparent field of view. 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. I have owned wider eyepieces, but ultimately I just prefer the Plssls (must be a mental defect). Higher values are slower and lower values are fasterthis is a holdover from camera lens terminology and has to do with exposure times.). Best eyepieces for telescopes 2023 | Space Like going from a 32 TV to a 65? Now looking for a couple of decent eyepieces. Why not go back to the people who sold you the scope and get their help. The 5-lens-element pseudo-Masuyamas that telesonic mentioned are/were fine eyepieces. 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. All are good eyepieces and diagonals, and would be excellent for star party use. The Plossl is a good all-around eyepiece design, is well suited for generic use and is relatively inexpensive to make. Jupiter and Saturn are low in the sky now. The image will be reversed left to right so you will need to get used to that. If you just want eyepiece recommendations and dont care about the details, Im adding that section right below before we go into the specifications that answer the above questions and make use of the formulas. Kellners tend to have narrower apparent fields of view (40 degrees rather than 50 or 52 degrees in a Plossl), and in short focal length telescopes (focal ratio f/5 or shorter) they can have more false color fringing, but for the most part it is hard to notice the difference between a well-made Kellner and a well-made Plossl in terms of image quality. I dont dabble in AP. As the clear cut worlds best eyepiece manufacturer, their name should at least be mentioned in an article like this. They are 82-degree AFOV eyepieces. It costs a lot to get that last 10% of performance. Even when I upgraded to a 6mm Goldline, I kept the Kellner around because of pretty annoying kidney-bean blackout issues on the Moon with that eyepiece. As said, they are cheap to compare. These lenses are connected together. thanks Ed. The 50 apparent field of view is plenty for me. 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. Omni 15mm Eyepiece - 1.25" Learn More. I also have a 25mm plossl and am happy with that. I guess my curiosity is mostly about the diagonal. 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. How will my telescopes focal ratio affect my purchases? 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. Hi, I have recently bought a Orion XT8 and am trying to work out which eyepieces to add to what is provided with the scope. 4. For planetary viewing, comfort is essential in helping to increase viewing time . To achieve a maximum of 200X (2X the aperture of 100 mm), we solve for the focal length. I am very near-sighted, barely see the big E on the vision chart without glasses. A Plssl is probably as good as any 32mm eyepiece in a 1.25 inch focuser. What is a Plssl eyepiece? | BBC Sky at Night Magazine They are all 4-element Plossl eyepieces, and most have a 52-degree field of view that is common to the Plossl design. 40mm Orion Sirius Plossl Telescope Eyepiece | Orion Telescopes