It also produces an erect image, meaning you see what youre viewing rather than seeing everything upside down or sideways as some types do. They are also really sharp. I often recommend it. A 6mm Plossl has a tiny eye lens. Thanks, Angelo M. You picked a great first scope. I foolishly destroyed it while experimenting with solar projection, because I hadnt realized the metal-and-glass construction was aided by a plastic retaining ring on the field stop, and I hadnt realized you do not need to change the eyepiece focal length when doing solar projection. We will talk more about the field of view later, but note that if you can use 2 eyepieces, you will typically only have one or two for very low power wide field views. In my scopes a simple zoom eyepiece like the Celestron 24-8mm or the Baader has replaced the higher powered plossls. I loved my Baader Mark-IV 8mm-24mm Zoom+Barlow combo in my 8" EdgeHD. Once I knew how much I liked the zoom I upgraded to the Baader Hyperion Zoom. Plus the FOV expands as you zoom to the higher powers. They are referring to how much or how little distortion is visible as you look from the center of the image out toward the edge. Thanks. But some people demand the very best, and it is available, at a price. Today, most beginner telescopes of any quality are sold with either Kellner or Plossl eyepieces. You could base this on 3, 4, 5, 6 or more focal lengths/magnifications. You can do the calculation which will show that the 70 will have a significantly wider field of view as compared to the 52. I want to help you select the best eyepieces for your budget and your telescope. At least you'll have one budget eyepiece that will give you a larger part of the sky at low magnification. A very good quality eyepiece for a reasonable sum. The Plossl has good color correction plus is free of the ghost images that plague the Kellner. The image quality is very good and the additional field of view and longer eye relief makes them very comfortable to use. If you look up transparency and seeing in the context of telescopes you can learn more about how atmospheric conditions will affect what magnifications you will choose on any given night. Magnification or power = focal length telescope / focal length eyepiece, Focal ratio = focal length telescope / aperture telescope, maximum practical aperture = aperture X 2, Edges of the optics are blackened for increased contrast, which prevents internal reflections, Anti-reflection, fully multi-coated optics provide enhanced light transmission for bright and clear images. This number can range from 30 degrees to 120 degrees. Higher than 3X is usually reserved for astrophotography. If money is not a concern, you cant go wrong with Tele Vue eyepieces, any Tele Vue eyepieces. Ive read, and re-read, and re-re-read this page. In terms of eyepieces, my best advice is provided in the article. For example, if you put a 30 mm eyepiece in a 3X Barlow, it will triple the magnification you get from that eyepiece. In my opinion, there are no wrong exit pupils. Also work very well with my binoculars that have removable focal reducers built into. Put the zoom on the Barlow for the high range. (Svbonys Plossls, for example, are optically identical to Orions Sirius Plossls). I cannot thank you enough! In that respect, they are similar to the Explore Scientific 82 degree mentioned earlier. 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. For super Plossl eyepiece, the field of view is typically 40 to 60 degrees. You have to decide how fussy you are about the edges and what your budget can tolerate. Plossl eyepieces have a wide FOV and are known for their clarity and sharpness. Overall, I would highly recommend the goldline eyepieces. The reason a plano-convex lens is good for using with a telescope is that it provides for both magnifying and erecting the images. Not everything in the sky benefits from high magnification. How does that field of view impact the viewing experience? There was an old Meade Super-Plossl design that used an additional lens element and could reach a wider field of view. I also really liked my E-Lux 32mm, a Kellner. If you wear glasses when observing, you probably want 15mm or more of eye relief, which the 20mm Plssl provides, but the shorter fl ones dont. Comparing to Plossl, the Expanse eyepiece is a lot more expensive. If your telescopes focal length is different, just change the focal length in the formula. 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. This design has some advantages over other designs, such as the Kellner eyepiece or Orthoscopic eyepieces. 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. But these are only intended to get you started. Since it's such a popular eyepiece and allows for quality, planet-viewing, that makes it a great instrument for attracting newcomers to the hobby, especially children. Personally I think they're still worth it. I want these as possible as wide, magnification and astrophotography purpose. 4. My own lineup (with a C8) is 32mm Plossl, 18.2mm DeLite, and 10.5mm Pentax (the last one not chosen to match, but rather because it belonged to a deceased friend). She has been looking at the sky for years and hopes to introduce more people to the wonderful hobby that is astronomy. 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. Their 50 to 52 degree AFOV is wide enough for general observing. The ocular for your highest visual acuity - for viewing deep-sky objects and the like - should have an exit pupil around . This may be enough for many eyeglass wearers. 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. 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. Fully coated optics provide crisp and bright views of the cosmos. Those are significantly more expensive than the 1.25 focal lengths. There is the 56mm Meade Plossl which magically turns my short FL refractors into their own finder scopes. Note that as we get into the higher magnifications, the millimeter jumps between eyepiece focal lengths gets smaller. If you want a very good eyepiece with a bit wider field of view but are on a budget, these are very good choices. This has nothing to do with your scope or eyepiece. I agree. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. I hope I can say that someday. In comparison, Aspherical lenses generally have no color distortion but might not work out well if the telescope user needs really high magnification. 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). Thanks in advance I really appreciate it! These come in focal lengths from 2.3 mm to 25 mm. Age is not part of the equation. This gives us more flexibility at the low end of the magnification range. This type of eyepiece provides you with wide-field views without any distortion due to its use as an achromatic lens system which reduces chromatic aberrations by combining two lenses made from different types of glass materials together on each surface. 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! But, at least get the 32mm Plssl. In general terms, the higher the AFOV number, the more the eyepiece will cost. Sirius Plossls offer a 52-deg apparent field of view for clear, sharp images. Kellner vs Plossl - Comparison table. Omni 15mm Eyepiece - 1.25" Learn More. 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. I possess an embarrassing array of fine eyepieces with names like Ethos and Nagler and Delos. I would like to know what is best for a 7 year old that would be getting his first telescope. 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. 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? Explore Scientific, like many eyepiece providers, have higher-priced and budget lines. I dont think so. 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. 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. Here are a few types of eyepieces you may read about and their typical AFOV. The only one not in the article is the Orion Q70 which is available in 38 mm, 32 mm and 26 mm. 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. It offers good color correction and high-contrast images. However, I have eyepieces with much smaller exit pupils and they work fine. These are exceptional eyepieces, and only available on the used market nowadays. Look at the apparent field of view specs and understand what this means for the field of view. I have Celestron and the Baader Hyperion. Save my name, email, and website in this browser for the next time I comment. But you may only be able to achieve that rarely. Read the full Earning Disclosure here. 130 mm scope will have a max of 260X for planning purposes. The Orthoscopic Plossl eyepiece is for those who are interested in performing close-up work on specimens up to three inches away from them and still get high magnification. Plossl eyepieces have an eye relief equal to about 80% of their focal length. This design features 4 lenses that are paired in two close-set doublets for the eye lens and the field lens. With a refractor, SCT or MCT, it is usually better to get a correct image diagonal than a correcting eyepiece. It has made learning the Constellations and star-hopping more fun and engaging for my whole family exactly what I was hoping for. Orion Sirius Plossl 10mm telescope eyepiece 1.25" in very good to excellent 185794462395 Is there anyway you could include links to the eyepieces you mentioned in the last paragraph of your reply as Im totally new so worried about buying the wrong thing! Many approach the quality of the premium brands. I do not miss beating my eyelashes against a 9.7mm Meade Plossl that I used to own. But just because an eyepiece is 2 doesnt mean it has a wider field of view than one that is 1.25. 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. This is a good thing, because normally the shorter the focal length of the eyepiece, the less eye relief you have. But you need to know, first, if you will be wearing glasses when you observe. 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. This can be debated 100 ways, but that is my advice. I am not aware of any such solutions for Newtonian reflectors. At that price point, it couldnt compete with other 5-element devices like Erfle and Nagler eyepieces that had better performance. The 66-degree AFOV of the Gold Line series provides a 32% wider field than Plossl eyepieces. 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. Which is Stronger? You might be able to find a Kellner, or perhaps a high-quality Orthoscopic. For visual use, 1.5X, 2X, 2.5X, and 3X Barlow lenses are common. 2x Barlow Cheap to try, and if you don't like it, easy enough to sell also. For our experience level, would you recommend changing anything right now? You can use the same eyepiece on planets and deep-sky objects (DSOs). Again, this is more noticeable in lower focal ratio scopes. A couple of them felt fancier, but the jump in performance was either insignificant or non-existent. Press Esc to cancel. But for AP you should really start your planning with the mount. These sizes have become the industrys standard sizes. These are considered to be the least expensive eyepieces for serious astronomy and are offered in focal lengths from about 6mm to 40mm. A 2 barrel on the eyepiece will allow the manufacturer to create an eyepiece that provides a wider field of view. Any exit pupil between 7 mm and .5 mm is just fine. Think of these as your Ford, Chevy, and Toyota of eyepieces. Eye relief is the distance from the eye lens to your eyeball, and the higher the better (within reason). Was compairing the Apertura standard 15mm Plossl with their 15mm super wide angle eyepiece (70 afov). 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. They are most useful in medium and longer focal lengths for terrestrial, planetary, and lunar viewing. 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. 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. So, I think it worth your while to try the Plssls. Lets take a look. Yes, Plossl eyepieces are some of the most popular with amateurs and professionals alike. If you go this route, you can always add single focal length eyepieces along the way to serve specialized purposes. Gold Line eyepieces also offer better eye relief than Plossl eyepieces, especially at the shorter focal lengths. The magnification range that is appropriate to your scope. I dont know if they make anything like this anymore, but as a kid, I had plastic slides with images on them (the Milky Way, Horse Head Nebula, etc.) Meanwhile, Plossl eyepieces are much more common and easy to find. Modified vs Unmodified DSLR Astrophotography: The Ultimate Showdown! Now here is something that some of us classic scope nuts know - there are plossls, and there are plossls. 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. At one time Plssls were premium eyepieces. The Big Bang Optics 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. 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. 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. The longer FL Plossls (>15mm) have some distinct advantages over more complex designs without the major disadvantage of Plossls which is short ER. Higher values are slower and lower values are fasterthis is a holdover from camera lens terminology and has to do with exposure times.). Some include: Parks Gold Series, Celestron Ultima's, Meade Series 4000 Super Plssls (depending on year / origin / style) and a few others that I don't remember. Some optics brands have taken the next step and launched some eyepieces they have labeled as Super Plossl. When you are shopping, if you need long eye relief, make sure you are selecting the correct ones. Here we have very good eyepieces with some extra features. For planetary viewing, comfort is essential in helping to increase viewing time . Then there is the rule of thumb to avoid duplicating focal lengths when acquiring eyepieces. 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. 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. You have a very wide choice of brands and styles to choose from. Again, for no other reason than to compare it to the 17mm Hyperion and draw your own conclusions about Plssls. If your focuser/diagonal only accepts 1.25 eyepieces, I would recommend you use a 32mm as your longest focal length, lowest power eyepiece. 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. This type of design also helps provide for eye relief; its a better experience if your eyes. 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. SVBONY Direct . 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. They include links to them where they can be ordered. 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. This general purpose design gives good colour correction and an adequate feld of view at reasonable cost and they are often bundled with new telescopes. 1. I found an ES 70 degree AFOV 35mm eyepiece and am wondering whether I should get this or the Orion 38 70. I had a newer - purchased in 2016 Meade 32mm (white lettering) that was no better than the older 32mm 4000. You can build a full set of these with good results, but be aware of eye relief, especially if you wear glasses. 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. Kellner eyepieces use three glass elements in two groups to minimize color fringing. The Big Bang Optics also participates in affiliate programs with Clickbank and other sites. But with 2 eyepieces and a Barlow, you have the full effective range of your telescope. Does this sound like something you would recommend based on the telescope I have? Recall that your lowestpower eyepiece's exit pupil should not exceed 6mm. And that is pretty much what Super Plossl are today. 11 = 163 = .5 All are good eyepieces and diagonals, and would be excellent for star party use. I saw Jupiter today and its 4 moons but when I looked at saturn I struggled to get a really clear image and it was very small. We will now discuss the specifications of eye relief and apparent field of view. Celestron 2026 Erecting Prism Barlow Lens Set is another great choice for those looking to get a variety of magnifications. https://telescopicwatch.com/best-barlow-lens-and-how-to/, Celestron 8-24 Zoom Review If you are going to wear your glasses when you observe, you want at least 18 mm of eye relief and 20 mm is better. This is why many telescopes come standard with at least one Plossl eyepiece. A 10mm or shorter Plssl is probably not worth it unless you want to see how you personally cope with short eye relief. When I had a 6mm Kellner, I found the eye relief annoyingly short, sure, but when compared to the 6mm Plossl that often comes with eyepiece kits, it was luxurious. We often end up spending more on eyepieces than we did on the telescope. I am looking for as much as best I can buy. A rubber safety cap protects the lens when not in use while also providing additional grip on this 35 mm Plossl eyepiece. It allows each eyepiece to provide two magnifications. For that purpose it is probably easier to find one to borrow. 100-300X, 2X Barlow. Some brands will add better lens coating, darker edges, or a higher quality case to their Super Plossl products, but strictly for performance, there isnt a difference between the two. Plossls provide very good eye relief for eyeglass wearers in focal lengths of about 25mm and longer. Many brands of eyepieces are available, including SVBony UltraWide, Astromania UltraWide Angle, Agena Astro StarGuider Enhanced UltraWide Angle and others. Their eye relief is limited to about 70-80% of their focal length. This might contain more of what you need. I often had to drop back to about 180X because of poor seeing and transparency. Over $250, I will label premium eyepieces. In this case, I am going to define this by the focuser and eyepiece size. You can email me also. 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. Many thanks, Sophie. > Click here to jump to the Best Eyepieces section. 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. 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. Would a higher magnification eyepiece help do you think or am I already pushing my telescope (XT8) to highest sensible magnification I can with BH zoom on setting 8mm and 2x Barlow? You are looking through a LOT of atmosphere which distorts the image. This was my first zoom eyepiece and the one that caused me to fall in love with zoom. Now looking for a couple of decent eyepieces. If you upgrade the telescope or add a second one, the eyepieces will work on that telescope too. No other type can compare with it when it comes to that quality. You use the 8-24 zoom for the midrange. Note to spectacle wearers: Plssl eyepieces with 15mm and longer focal lengths are good choices for spectacle wearers. ES 82 degree series plus 1 meade uwa @20 mm with 1800 focal length optical tube lowest mag 51 x / highest mag 300. That is why I suggest, if you can use 2 eyepieces, you will want one or two low power wide view 2 eyepieces. This will give you a maximum target for planning purposes. 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. When I started, I purchased less expensive eyepieces to learn about them and how I would use them. I agree with your comment on zooms for kids. Plossl eyepieces are perfect for astronomical viewing because the field of view is wider. The TFOV of the Hyperion will be greater than the TFOV of the Plssl, but the magnification will be about the same. In the early days of telescopic astronomy, refractor telescopes were designed with a single lens at the front and a single lens at the back. This type of design provides for both total magnifications as well as an erect image with little distortion. They have decent eye relief and little curvature of field. This will become more apparent the wider the AFOV is of the eyepiece, in my experience. With modern multi-coated optics that thwart internal reflections, Plossls and Kellners have little difference in glare or transmission/opacity. That said, I should also tell you that not all Plossls are created equal. 70 mm scope will have a max of 140X for planning purposes. We may earn commissions by recommending products on this website. Free shipping for many products! 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. I have to say that your questions are answered in the article. As a result, this can cause aberrations in the image as you move from the center of the view toward the edges. However, some eyepieces have an eye relief as short as 5 mm. 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. 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. Lets illustrate with an example using a 1200 mm FL telescope. That's how cost-efficient the entire package is! The BHZ 2 Adapter has threads on it so you can attach filters to it allowing you to use 2 filters with the zoom. or a Baader Classic Ortho 18mm with both a 1.5/2x Barlow and 3x Barlow. Tele Vue offers several series with apparent fields of view from 50 degrees to 120 degrees. Learn more about our story and the team behind the scene. I still use my 30mm Celestron Ultima fairly often with some of my telescopes. 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. Now we can establish a target magnification range. 30 = 60 = 1.3 PayPal, cash, bank transfer are all acceptable. Imagine you are looking at the moon with each of these eyepieces and consider what you would see. https://telescopicwatch.com/best-telescope-mounts-for-astrophotography/, Then you look at the optical tubes. The Plossl eyepiece is a type of optical system that was invented by Ernst Abbe. So yeah, they are good.. and some are even better than others, and more collectible. To estimate the highest practical magnification for your telescope, you take the aperture in millimeters, mm, and multiply it by two. So its best for use during duller times when there isnt much brightness visible. Whether it is cars or telescope eyepieces, there are inexpensive ones, upgraded models, and very expensive ones. Eyepiece Field of View Simulator astronomy.tools Field of View Simulator Change Telescope Reset Change Target Add Equipment They are just OK, but I dont recommend them, especially in a low focal ratio scope. Can You See The ISS With A Telescope? I often recommend the use of a barlow to achieve the higher range of magnifications. 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. The TFOV will be as wide as your 40mm Plssl, but with greater magnification and a slightly darker sky background. From planetary viewing to deep sky watching. The 5-lens-element pseudo-Masuyamas that telesonic mentioned are/were fine eyepieces. 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. This is where the cheap eyepiece will frequently fail to deliver a good image, around the edges. i did buy an astro-tech 3.2 paradigm ed from a cloudynights.com forum member. But the conventional way of expressing it is in terms of eyepiece focal lengths. This SVBONY eyepiece review should get you up to speed with the budget stargazing options. You will see these under many brands, including Orion, Celestron, GSO, and others. 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. - 32mm plossl. 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. (often referred to as Pseudo Masuyama). Plossl telescope eyepieces are the most popular type of eyepiece on the market. Eyepieces are a religion. This Super Plossl design was better than regular Plossl eyepieces, but not by much. Or, if you are buying from an online like Amazon, then look at the eyepieces I recommend and see if any suit your needs. Gosky Plossl 40 mm Telescope Eyepiece - 1.25inch This is probably the worst eyepiece I can recommend. Wide view and well-corrected view, even in F5 scopes.
