The TFOV of the Hyperion will be greater than the TFOV of the Plssl, but the magnification will be about the same. A Barlow lens can save you money and add flexibility. (Focal ratio is a term that refers to the telescopes focal length divided by its aperture. 2019-2023 Little Astronomy. But the longer FL units are certainly useful. Imagine you are looking at the moon with each of these eyepieces and consider what you would see. 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. 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. Many approach the quality of the premium brands. The 26 and 32 are usually the first ones I reach for. The basic design hasnt changed much, but the real costs of manufacturing have dropped. Soft rubber eye guard that's custom fitted . The ocular for your highest visual acuity - for viewing deep-sky objects and the like - should have an exit pupil around . I have seen wider-field Plossls. The bottom line is that it is best to have several magnification choices so you can optimize the view. You can still get eyepieces, but there are few choices. If you would prefer to buy him $60 eyepieces or even $30 eyepieces because he is only 7 and he can upgrade later, that is also OK. eyepiece shows signs of use with caps and bolt case, 32 mm Plossl very good cond. For what it is worth, a slow scope like your CPC9.25 (f/10?) Yes, Plossl eyepieces are some of the most popular with amateurs and professionals alike. 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. 4. This is why we recommend you try to locate the object first at low power, then use a higher magnification if you likethe wider field of view on the sky provides more context in terms of asterisms and reference stars and makes it more likely that youll catch the object you are looking for. Perhaps another review would be helpful. So its best for use during duller times when there isnt much brightness visible. Where a difference can show up is that a lower number focal ratio scope will make it harder for an eyepiece to provide a uniformly good, in-focus image all the way across the field of view due to the steeper angle that the light arrives at the edges of the eyepiece with a low focal ratio scope, as compared to a high focal ratio scope. You can read a thorough review of Goldline eyepieces here. but the meat of the article is about understanding the considerations and specifications to know when selecting eyepieces. 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. The original Meade 5-piece Super Plossl hasnt been in production for decades and at this point is more of a collectors item than a high-performance eyepiece. Omni 56mm Eyepiece - 2" Learn More. If you are completely new to stargazing, Kellner eyepieces are absolutely fine. I was just wondering if plossls are still worth it or should get a better eyepiece in a 30mm range. These are things you will want to know and use. There is always more to learn but it helps if you go in with a good base understanding, and that was my goal. Good value. Here we have very good eyepieces with some extra features. I can recommend these with confidence. But for the targets requiring higher mag Im still undecided between: Do you have any additional comments to help me? AP is all about the mount and accurate tracking. As a result, this can cause aberrations in the image as you move from the center of the view toward the edges. No results, please adjust your filters. Note that the full moon appears to be approximately .5 degrees across, so use that as a mental reference when looking at the numbers. 75-225X, 1.5X Barlow Kellners can be as little as half the price of a Plossl in the same focal length, but they are generally very comparable, especially in recent years as telescope prices have fluctuated in response to changing supply chains and demand. Perhaps you have read about planetary eyepieces, DSO eyepieces, and other types of specific eyepieces. 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. Are Plossl eyepieces good? Below .5 mm exit pupil, floaters in the eye become more apparent and can be bothersome. Youll find yourself adjusting these type of factors less than. 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. Most people will be fairly comfortable with eye relief of 12 mm or higher. I often had to drop back to about 180X because of poor seeing and transparency. Although Kellner eyepieces will help you learn a lot in the beginning but soon will realize that youre missing out on something, and eventually you will be tempted to spend money on another good quality eyepiece. Thanks so much. I also really liked my E-Lux 32mm, a Kellner. So, even if you have a Maksutov-Cassegrain scope, you should get a good experience from this eyepiece. A Kellner eyepiece has 3 lenses, while a Plossl has 4. 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. Edge sharpness is just satisfactory, nothing to boast about, as is the apparent field of view. One last thing, as a kid I used my telescope to watch squirrels and birds (which was interesting because the image was flipped around :-) so, you might consider getting an eyepiece that flips things the right way around so that navigating terrestrial nature is easier to manage. Videos for related products. I have since moved up to a 12 Dob but I use the same eyepieces and the BH Zoom continues to be my most used. Thanks in advance I really appreciate it! A typical zoom eyepiece has a focal length range of 8 mm to 24 mm. The Plossl eyepiece is a type of optical system that was invented by Ernst Abbe. I recommend it often to beginners on a tight budget. Find many great new & used options and get the best deals for Meade telescope maksutov eyepiece ETX-105EC Super Plossl 6.4mm 1.25" w capsule at the best online prices at eBay! Celestron 2026 Erecting Prism Barlow Lens Set is another great choice for those looking to get a variety of magnifications. I dont think so. However, because they have more glass elements than other designs, like Kellners, their manufacturing becomes extremely important to get high-quality optics. 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. . no caps come in bolt case. 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. It comes with two Barlow lenses, one Newtonian eyepiece, and three Plossl eyepieces in the set. However, i can read very well without my glasses with almost microscopic vision and can use my binoculars without glasses. Plossl eyepieces have a wide FOV and are known for their clarity and sharpness. Divide that by the magnification of that eyepiece in that scope. All registered. EP-mm = magnification = afov 4mm Eyepiece vs 20mm Eyepiece. Comparing to Plossl, the Expanse eyepiece is a lot more expensive. Plssl's were top of the line at one time, and are still being sold today, so that says something too. It's no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. If you are very demanding and must have the very best, this is where you want to be. 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. I decided to jump in with both feet and get an Orion ED80 (600mm f7.5 with a 2 focuser, So that I can move into astrophotography down the road. These tend to run toward the more expensive price range. Learn more about our story and the team behind the scene. At this point, a Plossl and a Kellner are so close in price and performance that you may as well get the Plossl. But in this scope, the 32 mm doesnt work well. Hi Ed, The 5-lens-element pseudo-Masuyamas that telesonic mentioned are/were fine eyepieces. Can you suggest the total . Many Kellners are made with field stops opened up to 50 degrees, in which case it can truly compare to a Plossl in any telescope with a focal ratio of f/6 or slower. So yeah, they are good.. and some are even better than others, and more collectible. In some cases, the eyepieces are waterproof to protect them from internal contamination caused by heavy dew conditions. 70 mm scope will have a max of 140X for planning purposes. You can find the eyepieces I use and recommend in this article. Is it just about finding and framing, or do wide fov EPs create a more immersive experience? All of the Omni eyepieces have a 1.25" barrel size with the exception of the super low power 56 mm, which has a barrel size of 2". This doublet design has an apparent field of view of 50-degrees or wider but can suffer from short eye relief making them difficult to use for some . When I was getting my start in the hobby, I bought an ultra-cheap ($15?) My friend has one and he really likes it, and it is his third telescope. They also offer a generous 16 mm of eye relief which is most important in the shorter focal lengths. If you don't like the reflections, there really aren't many other budget options at its focal length beside a Plossl which will be super uncomfortable to use, or spending over $100 for something like a Meade UWA. When you use a Barlow lens with an eyepiece, you get the magnification, but the eye relief is not affected. You have to decide how fussy you are about the edges and what your budget can tolerate. This is where the second formula comes into play. This series of eyepieces may provide better value in this price range. thanks for all your help. They have a pop-up eye guard and they are threaded to accept filters. Now we have a maximum established. Eyepieces are a religion. Plossl against Kellner eyepieces in a previous article, 5 Budget Telescopes That Are Sneakily Powerful. The original design for Plossl eyepieces has existed since 1860. A Plossl eyepiece lens provides more eye relief than anything else out there! These are matters of individual preference and budget. or a Baader Classic Ortho 18mm with both a 1.5/2x Barlow and 3x Barlow. Then you can judge for yourself if it is worth it. 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. Many thanks, Sophie. That's how cost-efficient the entire package is! 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. I must also warn you that some of these bad Plossls may actually turn out to be worse than any run-of-the-mill Kellner. At one time Plssls were premium eyepieces. 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. It is pretty much worth it for everyone that has a telescope with a 1.25 inch focuser to have a 32mm Plssl. I often recommend the use of a barlow to achieve the higher range of magnifications. Newer multi-coatings are better, I suppose, but newer does not always mean better in the ocular game. They are all 4-element Plossl eyepieces, and most have a 52-degree field of view that is common to the Plossl design. As new anti-reflection coatings were developed, it became possible to actually make use of complex lens arrangements (not just in relatively simple 4-element systems but also in convoluted, extreme wide-field eyepieces such as the TeleVue Nagler). When I started, I purchased less expensive eyepieces to learn about them and how I would use them. For what it's worth: I believe the Omni 1.25 inch 2x Barlow is one of the Shorty Barlows manufactured by GSO. You can email me also. Quality this good usually costs a lot more. They provide a range of magnifications with one eyepiece. 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. 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. 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. 11 = 163 = .5 6mm Kellner eyepiece that I enjoyed a lot. These companies rebranded them under their own names. . Lets give an example. They deliver sharp images in almost all telescopes. The computerized pad and motor work on AA batteries which can last you a few hours. 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. On many occasions, that will be too high power for the atmospheric conditions. Or, if you are buying from an online like Amazon, then look at the eyepieces I recommend and see if any suit your needs. Note to spectacle wearers: Plssl eyepieces with 15mm and longer focal lengths are good choices for spectacle wearers. Best Telescopes For 10 Year Old Kids: Reviews and Buying Guide, The Complete Guide to the Planets You Can See With a Telescope, The Best Barlow Lenses: Reviews and Buying Guide.
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