Which is Stronger? Since there are so many different types of eyepieces available on the market, choosing the right one for your situation can prove to be a harrowing task. These are considered to be the least expensive eyepieces for serious astronomy and are offered in focal lengths from about 6mm to 40mm. They are usable, but your eye will be extremely close to the top lens glass. A large field lens makes the ocular easy to look into. When I was getting my start in the hobby, I bought an ultra-cheap ($15?) If that surface is wobbly the scope will be almost useless. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. Then you can judge for yourself if it is worth it. A key thing to remember is that eyepieces are universal. In the beginning, you are not going to know what the atmospheric conditions might be in your area. They have decent eye relief and little curvature of field. If we combine a Barlow with an 8-24 mm zoom eyepiece, we have an amazing range. Buy Astromania 1.25" 4mm Plossl Telescope Eyepiece - 4-Element Plossl Design . I want to help you select the best eyepieces for your budget and your telescope. When discussing eyepieces, you will hear people comment on how well the eyepiece is corrected. 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 will give you a maximum target for planning purposes. Pay attention to the eye relief, especially if you will be observing with glasses. Why not go back to the people who sold you the scope and get their help. Not really. Every new skill takes time. Save my name, email, and website in this browser for the next time I comment. https://www.amazon.com/Orion-8879-1-25-Inch-Enhanced-Telescope/dp/B000BMPBLK/ref=sr_1_8?crid=3KKUJRXYYN7DI&dchild=1&keywords=telescope+diagonal+1.25&qid=1610887695&sprefix=telescope+diagonal%2Caps%2C512&sr=8-8, Excellent article and very good recommendations. I took notes and now can shop with confidence I also like to have my face physically in contact with the eyepiece (or the eyepiece cup) so the tight eye relief of the shorter focal lengths actually works really well for me. 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. Even though there are more sophisticated types of EPs, Plossls hit the right spot between high-quality optics and price. 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. Pentax K-70 Astrophotography: The Ultimate Camera on a Budget! When you use a Barlow lens with an eyepiece, you get the magnification, but the eye relief is not affected. However, I have eyepieces that have larger exit pupils than 7 mm and they work well. The image quality is very good and the additional field of view and longer eye relief makes them very comfortable to use. 30 = 60 = 1.3 I consider the Plossl to be the minimum standard for a good eyepiece. Be aware of the focal ratio of your scope. If money is not a concern, you cant go wrong with Tele Vue eyepieces, any Tele Vue eyepieces. Their eye relief is limited to about 70-80% of their focal length. 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? Some of these series also offer 2 eyepieces for telescopes that can accept 2 eyepieces. These "other" ones I speak of, aren't technically that, they are a 5 element eyepiece, of a different design. 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. Higher than 3X is usually reserved for astrophotography. Using your example: We will use a 100 mm telescope with a 600 mm focal length and Another way to look at it is that a 30 mm eyepiece in a 3X Barlow works like a 10 mm eyepiece.. Most likely it will be used as a loaner eyepiece to go with one of my two loaner telescopes. The magnification and field of view is the same as a 10 mm eyepiece (AFoV being unchanged) in a 600 mm telescope but the eye relief is that of a 30 mm eyepiece. 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 for AP you should really start your planning with the mount. Non-eyeglass wearers can usually tolerate Plossls as short as about 10-12mm before their eyelashes start brushing the ocular lens. Thanks for a very helpful guide. Save my name, email, and website in this browser for the next time I comment. did i pass? 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. If you are very demanding and must have the very best, this is where you want to be. But in this scope, the 32 mm doesnt work well. I possess an embarrassing array of fine eyepieces with names like Ethos and Nagler and Delos. In this case, I am going to define this by the focuser and eyepiece size. So perhaps you do your line up like this. My 20, 26, and 32mm Plossls will probably stay around. If your scope uses eyepieces that are closer to 1, then you have an old style .965 that is now obsolete. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. There is no problem using a Celestron eyepiece in a Meade telescope, for example. Type above and press Enter to search. A Kellner eyepiece has 3 lenses, while a Plossl has 4. Lets illustrate with an example using a 1200 mm FL telescope. For it's cost, a 32mm Plssl eyepiece is hard to beat. Explore Scientific 68 34 mm or ES 82 30 mm would also be good choices at a significantly higher price but with better edge correction. Very often, those eyepieces will be in the outdated 0.965 format rather than the modern 1.25 or 2 diameter barrel format. And that is pretty much what Super Plossl are today. It doesnt matter what type of telescope you have, as long as your scope takes these standard sizes. Required fields are marked *. Very worth it for me, as I like to use bino-viewers. Again, I only do this for my low power wide views. These sport a 60-degree apparent field of view, about a 20% wider apparent field of view than Plossl eyepieces. About Us | Privacy Policy | ContactLittle Astronomy 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. I dont think so. Theres a wide range of quality when it comes to Plossls and trusting the brand you are getting one from matters a lot if you dont want to get an eyepiece with lots of reflection or optical issues. The reason a plano-convex lens is good for using with a telescope is that it provides for both magnifying and erecting the images. Plossl eyepieces have a wide FOV and are known for their clarity and sharpness. The field of view of a p Plossl eyepiece is typically 60 to 120 degrees. - 32mm plossl. So its best for use during duller times when there isnt much brightness visible. Below .5 mm exit pupil, floaters in the eye become more apparent and can be bothersome. Plssl's were top of the line at one time, and are still being sold today, so that says something too. I recently purchased the SVBony 7-21 zoom from Amazon. 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? 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. To achieve six magnifications, you can have six eyepieces. Celestron - 1.25" Eyepiece and Filter Accessory Kit - 14 Piece Telescope Accessory Set - Plossl Telescope Eyepiece - Barlow Lens - Colored Filters - Moon Filter - Sturdy Metal Carry Case. A 15mm Plssl might be worth it, if you dont wear glasses. Plossl eyepieces are great. What should one opt for a 2 EP over a 1.25? The atmosphere is typically the limiting factor as we get to higher magnifications. Good quality. 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. Free shipping for many products! 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. Tele Vue has eyepieces that approach $1000. thanks for all your help. https://www.widescreen-centre.co.uk/explore-scientific-70-eyepieces.html. These are highly sought after ep's, and hold their value well. 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. A four-element eyepiece was made by putting together two achromatic doublets with different focal lengths. 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. Each eyepiece gives you a unique magnification based on the formula listed at the start: Why do you need more than two eyepieces? Omni 15mm Eyepiece - 1.25" Learn More. And I continue to read excellent reports on the AT Paradigm and similar under different labels. Plossl eyepieces have 4 lenses that are paired in two doublets. https://telescopicwatch.com/?s=barlow, Best of luck with your new telescope. Omni 9mm Eyepiece - 1.25" Learn More. Worth is a subjective evaluation, so here is my subjective input: 1. Best suited for telescopes with f-ratios f6 or slower. There is a little bit more to it than that and there are other design . A Plossl eyepiece has a lens thats plano-convex, which means it is flat on one side and convex on the other. As to a more immersive experience, yes, I would say a wider FOV does provide a more immersive experience. Celestron 2026 Erecting Prism Barlow Lens Set is another great choice for those looking to get a variety of magnifications. I did sell them all when I adopted Dioptrx, and the Naglers are amazing! 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). I have seen wider-field Plossls. . Take a look at your manual or users guide. You mentioned regarding ORTHO eyepieces: Excellent specialty eyepieces, usually for planets. This was my first zoom eyepiece and the one that caused me to fall in love with zoom. I had a TV 20mm Plossl once. The Wiki article(s) were very good if anyone else is confused. Meade went back to the drawing board and they removed the fifth element, keeping the original Plossl design, however, they kept the Super Plossl brand and added some premium materials. Sorry but I am not offering a configuration and pricing service. The combination of high-quality optics and accessible prices have made them the favorite design for amateur astronomers and even professionals. Despite this, I also have some Plossls which are indispensable. Focus on the magnifications rather than the mm of the eyepieces. Offering a wide 52 apparent field of view, these 10mm, 17mm, and 25mm Orion Sirius Plossl Telescope Eyepieces provide extremely sharp images of impressively high contrast. You can email me also. For visual use, 1.5X, 2X, 2.5X, and 3X Barlow lenses are common. They also offer a generous 16 mm of eye relief which is most important in the shorter focal lengths. Does having a 70 vs 52 fov make a noticeable difference for double the 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 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. Well, I'll just say it. There are some very good choices in this range. My most used eyepiece is an 8-24 mm zoom. Even if we were next-door neighbors this would take weeks of discussion and planning. You use the 8-24 zoom for the midrange. Celestron's 4-element Plossl eyepiece features include blackened lens edges to minimize internal reflection and maximize contrast, fully multi-coated optics for maximum light transmission. 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? If we want to get VERY specific to a combination then inherent aberrations of this scope and that eyepiece could produce a unique result. The field of view of the eyepiece has a few effects when it comes to actually using it in the telescope. This means less time trying to figure out which way your images should be oriented before examining them. i dont have 1 of everything, and i bought the best i could afford on a low budget; meade and orion. The 4000 SWA's were way overpriced for their performance IMHO. 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). As a result, this can cause aberrations in the image as you move from the center of the view toward the edges. Choose three focal lengths. I havent been into the hobby for long but my experience is in line with whats been said. The longer FL Plossls (>15mm) have some distinct advantages over more complex designs without the major disadvantage of Plossls which is short ER. If you wish to find a short-focal length eyepiece with a longer, more comfortable eye relief, you could use a long-focus eyepiece with a separate, high-quality barlow lens (an achromatic or apochromatic fully multi-coated barlow would be necessary), or you could purchase one of the several designs incorporating a smyth/barlow lens into the eyepiece design. The magnification range that is appropriate to your scope. 50 150X, no Barlow I often recommend it. But the conventional way of expressing it is in terms of eyepiece focal lengths. A wide range of focal lengths are available, all in 1.25-inch size. I do not miss beating my eyelashes against a 9.7mm Meade Plossl that I used to own. Note that the price categories are approximate, as prices can vary between retailers. Lets just say that once you get below F5, it is really hard for the eyepiece to deliver a clean image to the edge. If you read the article you know how to calculate the magnification and field of view. But, at least get the 32mm Plssl. They have good center sharpness but exhibit some field curvature and astigmatism. They also improve a bit when it comes to eye relief. We have compared Plossl against Kellner eyepieces in a previous article. This is just a planning target. 130 mm scope will have a max of 260X for planning purposes. I often recommend the use of a barlow to achieve the higher range of magnifications. It sounds cool, they must be better than regular Plossls with that name, right? SV207 30mm Super Plossl Eyepiece. 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. 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 . By default, expect a 40-degree field of view in a Kellner and a 50-52 degree field of view in a Plossl. I am not aware of any such solutions for Newtonian reflectors. The third choice of eyepieces is the Orion 12 mm Sirius Super Wide Angle Correct Image Eyepiece. Hello sir, thanks for your article its realy helpful. Most modern telescopes use a focuser, or diagonal, that accepts 1.25 eyepieces. Quality this good usually costs a lot more. For me personally, even though I don't use glasses to observe, I still don't want to dig out the view through a plossl or ortho eyepiece which tend to have short eye relief. Field of view, is about finding, framing, drift time, and context. 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. With an f/10 telescope, Plossls are as sharp as any other kind of eyepiece of the same focal length. Plossl eyepieces have a wider field of view that can go from 50 to 56 degrees. Hayppy that now I have more facts to put in my decision. This is your Lexus, Acura, and Infinity types that offer more features, better build, and a bit more polish. Plossl eyepieces have an eye relief equal to about 80% of their focal length. Once I knew how much I liked the zoom I upgraded to the Baader Hyperion Zoom. But with 2 eyepieces and a Barlow, you have the full effective range of your telescope. Sony A7III vs A7RIII Astrophotography: Which One to Shoot Infinity! 4. Because the eyepiece was still similar enough to a Plossl and still kept the symmetrical design, they called it Super Plossl. 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. The Plossl is a good all-around eyepiece design, is well suited for generic use and is relatively inexpensive to make.

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