In comparison, Aspherical lenses generally have no color distortion but might not work out well if the telescope user needs really high magnification. This is your Lexus, Acura, and Infinity types that offer more features, better build, and a bit more polish. Some of these series also offer 2 eyepieces for telescopes that can accept 2 eyepieces. Yes, Plossl eyepieces are some of the most popular with amateurs and professionals alike. Plossl eyepiece is good for astronomy and microscopy. Below .5 mm exit pupil, floaters in the eye become more apparent and can be bothersome. 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. Prices can run from $20 to $200 so the field is pretty broad. It doesnt matter what type of telescope you have, as long as your scope takes these standard sizes. I also have a 25mm plossl and am happy with that. the reality is that today's eyepieces are all quite good, particulalarly in an f/10 telescope. Many brands of eyepieces are available, including SVBony UltraWide, Astromania UltraWide Angle, Agena Astro StarGuider Enhanced UltraWide Angle and others. No other type can compare with it when it comes to that quality. If the above guide has helped you understand the terms and workings of eyepieces, scroll up and make a selection from our recommendation list. Required fields are marked *. Eye relief is the distance from the eye lens to your eyeball, and the higher the better (within reason). You can enjoy wide-angle views without giving up any of the clarity or sharpness when using Plossl eyepiece while Kellner will give you more magnified views but at less than half the brightness levels in comparison to other lens designs on this list if light pollution was involved. But with 2 eyepieces and a Barlow, you have the full effective range of your telescope. 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. This can be very helpful for star hopping. If that is the case, it will give me another reasonably good, inexpensive zoom to recommend to beginners. None of my fancy EPs have enough contrast for this application. Orion Sirius Plossl 10mm telescope eyepiece 1.25" in very good to excellent 185794462395 For planetary viewing, comfort is essential in helping to increase viewing time . Why not go back to the people who sold you the scope and get their help. There is always more to learn but it helps if you go in with a good base understanding, and that was my goal. Im also uncertain about what to expect from an additional investment? Have Any Astronauts Been Lost in Space Forever. As of the past couple years, it seems possible that the choice between Kellners and Plossls has been made for usyou either get what you get with your beginner telescope, or you will have to find a Plossl. 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. Plossl eyepieces are very good and fairly inexpensive, typically between $25 and $50 each. As for Barlow Lenses, take a look at this article. They are also really sharp. 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.) If that surface is wobbly the scope will be almost useless. These are matters of individual preference and budget. You are asking about a very specific eyepiece in a very specific scope combined sometimes with a Barlow. 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. A Plssl is probably as good as any 32mm eyepiece in a 1.25 inch focuser. A decent barlow might cost as much or even more. No price limit? But these are only intended to get you started. SVBONY Direct . Tip Its almost always cheaper to buy directly from Agena Astro. Save my name, email, and website in this browser for the next time I comment. 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. https://www.amazon.com/s?k=Orion+Q70&ref=nb_sb_noss_2, Understanding Telescope Eyepieces- There are recommendations, based on budget, A Televue Plssl may be better than a generic one, but the difference is probably not worth the additional cost. Another useful aspect of a wider field of view is that, assuming the entire eyepiece is sharp enough to show good images right to the edge, you dont have to nudge the telescope to track the rotation of the Earth as often with a Plossl (50 degrees) compared to a Kellner (40 degrees). I loved my Baader Mark-IV 8mm-24mm Zoom+Barlow combo in my 8" EdgeHD. 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. 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. Most likely it will be used as a loaner eyepiece to go with one of my two loaner telescopes. In some cases, an object is so large (i.e., the Moon, the Pleiades, the Orion Nebula, the Andromeda Galaxy) that a narrow field of view can only show you part of the object, whereas a wider field of view could show the whole object at the same magnification. Most people will be fairly comfortable with eye relief of 12 mm or higher. 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. But some people demand the very best, and it is available, at a price. 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. Fortunately, the investment can be leveraged with future scopes since eyepieces are standard sizes so they work in almost any telescope. 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 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. If your focuser/diagonal only accepts 1.25 eyepieces, I would recommend you use a 32mm as your longest focal length, lowest power eyepiece. I have a 4 element (traditional) and a 5 element 32mm Meade, both from the same era in Japan, and the 5 element is much better by quite a bit. A zoom eyepiece works like the zoom lens on a camera. Each eyepiece gives you a unique magnification based on the formula listed at the start: Why do you need more than two eyepieces? For the price, I think the eyepiece is still a good pick. Also, children do not often have highly developed motor skillsso I would avoid the frustration of switching out eyepieces, and consider a zoom lens. Those are significantly more expensive than the 1.25 focal lengths. But what are the differences between these two and how do you know which one to choose? Combining a cheap eyepiece with a cheap barlow isn't a elegant solution. You can buy eyepieces specifically focused on a particular scope or you can buy eyepieces that you expect to use with this and all future scopes. 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. Eyepiece Field of View Simulator astronomy.tools Field of View Simulator Change Telescope Reset Change Target Add Equipment (Focal ratio is a term that refers to the telescopes focal length divided by its aperture. The first group is made up of a convex lens and concave lens, while the second one has four small cylindrical lenses that work together to magnify what you see through them for your viewing pleasure. Every review suggests replacing the 10mm Kellner eyepiece (and possibly 25mm Kellner) that comes with it. However, because they have more glass elements than other designs, like Kellners, their manufacturing becomes extremely important to get high-quality optics. 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? 6mm Kellner eyepiece that I enjoyed a lot. So its best for use during duller times when there isnt much brightness visible. I currently own a Mak127 ( that can't use 2"eyepieces) and a 80ED ( that one can hold 2"eyepieces). I found an ES 70 degree AFOV 35mm eyepiece and am wondering whether I should get this or the Orion 38 70. There is the 56mm Meade Plossl which magically turns my short FL refractors into their own finder scopes. When discussing eyepieces, you will hear people comment on how well the eyepiece is corrected. If well made, Plossls are bright, with good contrast, and a flat field, and excellent sharpness. Free shipping for many products! Again, does it create a more immersive viewing experience? Typically, these will be 25 mm and 10 mm or something close to that. Non-eyeglass wearers can usually tolerate Plossls as short as about 10-12mm before their eyelashes start brushing the ocular lens. 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. Gold line eyepieces are available in 6mm, 9mm, 15mm, and 20mm focal lengths. I have to say that your questions are answered in the article. 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. 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. 2019-2023 Little Astronomy. As the clear cut worlds best eyepiece manufacturer, their name should at least be mentioned in an article like this. Like going from a 32 TV to a 65? We will use a 100 mm telescope with a 600 mm focal length that only takes 1.25 eyepieces. However, you may see them at higher prices for the short term. My Meade 4000 56 and 60 degree Meade Plossls are pretty sharp to my eyes and do pretty well for me. A large field lens makes the ocular easy to look into. My most used eyepiece is an 8-24 mm zoom. These are the best in optical performance and build quality. Higher values are slower and lower values are fasterthis is a holdover from camera lens terminology and has to do with exposure times.). The Regular Plossl eyepiece is made to be a basic type of scope for viewing objects that are nearbysay within two feet or so from where youre looking through it. Looking from different sorts I found the Baader Aspheric 31mm and 36mm.these two eyepieces allow me to switch between 2" and 1.25"just by changing the barrel. So we say that an F5 scope benefits from better corrected eyepieces more than the F10 scope. These will normally be higher priced and may be outside the price range we show here. If you want to buy him $200 eyepieces so he can grow into them, that works. Thus the 30 mm eyepiece in a 600 mm telescope produces 600/30 = 20X magnification while with the Barlow, we have 1800/30 = 60X. 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. Eyepieces under $100 each are generally considered budget or low-cost eyepieces. You mentioned regarding ORTHO eyepieces: Excellent specialty eyepieces, usually for planets. They have a 60deg apparent field, long eye relief, adjustable eye shield and extremely well corrected. You can email me also. Over $250, I will label premium eyepieces. If you are investing for the future, get the BH zoom. Good value. 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. I would suggest you also get a 2 low power wide view. All the rest will likely be 1.25. For super Plossl eyepiece, the field of view is typically 40 to 60 degrees. I want these as possible as wide, magnification and astrophotography purpose. 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. Omni 9mm Eyepiece - 1.25" Learn More. A rubber safety cap protects the lens when not in use while also providing additional grip on this 35 mm Plossl eyepiece. No results, please adjust your filters. 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. 1.25" Power mates with T ring adapter. Their eye relief is limited to about 70-80% of their focal length. I usually recommend a 32 mm Plossl type eyepiece as that provides about the widest view you can achieve with a 1.25 focuser. I already got the 10mm super wide because of the added eye relief but at 15mm both have the same eye relief. Celestron Omni Eyepieces: The Omni series is the most economical eyepiece offering from Celestron. Typically a Barlow does not add or subtract from this, but there again we have bad Barlows and Good Barlows. So save yourself this future unnecessary expense and just buy a Plossl. We have a range of 32 mm to 3 mm. The focal length range for 1.25 Plossls is about 6mm to 45mm. Ah I see what you are saying, I had wondered whether this might have had an impact as Ive seen it mentioned before but dont fully understand it so will do some research, thank you . Plossl eyepieces have an eye relief equal to about 80% of their focal length. While I also have the Baader Hyperion Zoom, mentioned later, I continue to make use of the Celestron, especially in my smaller scopes. The Plossl eyepiece is a type of optical system that was invented by Ernst Abbe. But for the targets requiring higher mag Im still undecided between: Kellners are often sold with cheaper, even more entry-level telescopes than Plossls. The Astrovid 40X60mm Zoom Telescope Camera Lens Kit is a great choice for those looking to get a variety of lenses, at different magnifications. Super Plossls offer a smaller field of view, which makes them good for close-up views and examining small objects. (Compare, for instance, 20mm of each type, or 10mm of each type.) I started with the Celestron zoom. ORION SIRIUS PLOSSL 10mm telescope eyepiece 1.25" - $17.01. I guess my curiosity is mostly about the diagonal. They are 82-degree AFOV eyepieces. You have a very wide choice of brands and styles to choose from. Comparing to Plossl eyepieces, Super Plossl is somewhat better for astronomy. Plus the FOV expands as you zoom to the higher powers. 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. Glad you found it helpful. Despite this, I also have some Plossls which are indispensable. There is no shortage of accessories for the Nexstar series. They work great every day and get you where you want to go, but dont have what the higher priced models have. I have four telescopes, but I use the same eyepieces in all of them. At 32mm, a Plssl will give you as wide a field of view as any 1.25mm eyepiece can. It also was considerably more expensive. The ES 82s are my favorite eyepieces, especially in the 1.25 format. It should list what size eyepieces you can use. I have owned wider eyepieces, but ultimately I just prefer the Plssls (must be a mental defect). To achieve a maximum of 200X (2X the aperture of 100 mm), we solve for the focal length. This is why many telescopes come standard with at least one Plossl eyepiece. THANK YOU x 12! > Click here to jump to the Best Eyepieces section. Then you can judge for yourself if it is worth it. The 4000 SWA's were way overpriced for their performance IMHO. You can add the specialty single FL eyepieces later if you wish. She has been looking at the sky for years and hopes to introduce more people to the wonderful hobby that is astronomy. 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. I havent addressed .965 eyepieces in the recommendations. My friend has one and he really likes it, and it is his third telescope. This would definitely matter to observers who wear eyglasses when viewing. An Austrian inventor Georg Simon Plossl came up with the Plossl eyepiece design in 1860. Be sure to read the following as you consider your eyepiece purchases. 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. 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. So, if your scope is F6 or lower, you may want to consider some of the higher priced, better corrected eyepieces if you want the best image to the edge of the field. Very nice article. My love affair with space began in a field in India at the age of 7, when I looked up at the Milky Way for the first time. Am I correct? Plossl eyepieces have an eye relief equal to about 80% of their focal length. is pretty forgiving of eyepiece faults and a wide variety of eyepiece designs will work just fine in it. The atmosphere is typically the limiting factor as we get to higher magnifications. These are exceptional eyepieces, and only available on the used market nowadays. 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 one exception I would keep in mind would be when working with Newtonian reflector telescopes below F5. Below 20 however, the eye relief makes it difficult for me and my glasses so Ive been replacing my 5-15 EPs with 82 degree EPs with more relief. Does this sound like something you would recommend based on the telescope I have? They have a narrow AFOV but have a reputation for being very sharp.. They can also be found as Orion Expanse sporting a blue line rather than gold. 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. 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. I am not aware of any such solutions for Newtonian reflectors. That is up to you and your budget. Differences and Similarities. short answer: yes. 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. Most telescopes come with one or two eyepieces. If you were considering a Super Plossl made by an entry-level brand, just use those extra funds to instead get a regular Plossl made by a more reputable manufacturer. 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. Scott. Pentax 10.5mm Eye Piece Excellent Condition (#314374986239) r***d (1910 . Another way to look at it is that a 30 mm eyepiece in a 3X Barlow works like a 10 mm eyepiece. I am very near-sighted, barely see the big E on the vision chart without glasses. This was very useful, I got a meade infinity 90mm ( after read the review here -. 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. 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. I have a variety of eyepieces, including Explore Scientific and Meade 82 degree series so I have choices. Kellner eyepieces, on the other hand, are generally pretty close to each other in terms of quality so theres little chance you will get much variance in image definition between brands. The magnification range that is appropriate to your scope. OK that makes sense, many thanks. Look those up, seeing and transparency in the context of astronomy. You can buy a range of these from Modern Astronomy. Thanks for your comment. I have just one Meade product currently and that is a series 4000 1.25 inch UHC type filter which I use for outreach. For your application and the eyepieces you have or are going to get, you really dont need anything else. Read our full affiliate disclosure here. Note that the price categories are approximate, as prices can vary between retailers. If you go this route, you can always add single focal length eyepieces along the way to serve specialized purposes. At one time Plssls were premium eyepieces. This determines how much light the telescope will gather. Note that as we get into the higher magnifications, the millimeter jumps between eyepiece focal lengths gets smaller. Understanding and using a Barlow Lens Save my name, email, and website in this browser for the next time I comment. Stargazing Help is a participant in Amazon Associates program. These are two very important considerations when you are looking for eyepieces. However, Orion has managed to make one that is quite compatible with most styles of telescope. In general terms, the higher the AFOV number, the more the eyepiece will cost. If one Super Plossl specifies it uses a 5 lens design, then you can definitely consider it a true Super Plossl that might offer better performance, but no brand has released any of those for decades. I wont go into all the types of aberrations that can be there. These eyepieces are technically called Symmetrics, since Plossls can have different focal lengths for each doublet, but they are always marketed as Plossl. It's one of the best choices you have when it comes to budget stargazing. Divide that by the magnification of that eyepiece in that scope. Save my name, email, and website in this browser for the next time I comment. With an f/10 telescope, Plossls are as sharp as any other kind of eyepiece of the same focal length. Also, as the apparent field of view gets wider, the image will require more correction. A key thing to remember is that eyepieces are universal. This also makes them more resistant to any form of dust getting inside the eyepiece. Fully coated with magnesium fluoride on every air-to-glass surface for excellent light transmission and high contrast views. For astronomical observations, such as viewing craters on the moons surface from Earth, high-magnification models are preferred because they offer more detail. 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. Omni 6mm Eyepiece - 1.25" Learn More. When I was getting my start in the hobby, I bought an ultra-cheap ($15?) 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! This makes them a bit more complex and expensive than other designs, but also gives them a wider field of view, reasonable eye relief, and reduces optic aberrations. 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. Best suited for telescopes with f-ratios f6 or slower. This is the link to the eyepiece I am looking at potentially buying, would you recommend this over the Orion one or vice versa do you think? Just give yourself some time to learn the app and to understand the scope. Despite the narrow field of view and short eye relief, it showed shockingly good views of Saturn, Jupiter, and even the Moon. The stock 9 and 15mm Omnis were very good. 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? The longer FL Plossls (>15mm) have some distinct advantages over more complex designs without the major disadvantage of Plossls which is short ER. 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. 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. If money is not a concern, you cant go wrong with Tele Vue eyepieces, any Tele Vue eyepieces.
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