1:10 . That said, I should also tell you that not all Plossls are created equal. 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. I couldnt find any suggestions on your site about diagonal recommendations. OHHH, now i get it! 32 mm = 18.75X12 mm = 50X8 mm = 75X6 mm = 100X4 mm = 150X3 mm = 200X. 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. 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. Now we just divide it up and fill in some sample focal lengths. Celestron Omni Eyepieces: The Omni series is the most economical eyepiece offering from Celestron. 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. They deliver sharp images in almost all telescopes. Tele Vue offers several series with apparent fields of view from 50 degrees to 120 degrees. This will give you a lower power and a medium to high power eyepiece, depending on the focal length of your scope. If you feel the need to buy something now, consider this Orion diagonal. The image quality is very good and the additional field of view and longer eye relief makes them very comfortable to use. As said, they are cheap to compare. I was looking on a OPT website and they have celestron 32mm and 15mm plossl. Here's the short answer - Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. 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. 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. Jupiter and Saturn are low in the sky now. A 10mm or shorter Plssl is probably not worth it unless you want to see how you personally cope with short eye relief. If well made, Plossls are bright, with good contrast, and a flat field, and excellent sharpness. I also struggled to see features on both (gas bands on Jupiter and clear rings on saturn). I think some of these kits even include 4mm eyepieces, and thats ridiculous! I have CPC 925 and I currently own Hyperion 10mm, Hyperion 17mm and Celestron plossl 40mm. That's how cost-efficient the entire package is! or a Baader Classic Ortho 18mm with both a 1.5/2x Barlow and 3x Barlow. It is pretty much worth it for everyone that has a telescope with a 1.25 inch focuser to have a 32mm Plssl. 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. Kellner eyepieces were first designed by Carl Kellner in 1849. As a result, this can cause aberrations in the image as you move from the center of the view toward the edges. Understanding and using a Barlow Lens Later in the article, I will also give my top recommendations for both the best Kellner as well as the best Plossl eyepieces. Because of this setup, you might also hear a Plossl eyepiece referred to as a symmetrical eyepiece. For one thing, a wider field of view is almost always more pleasant. Disclosure - If you buy something via our link, we may earn a commission with no additional expense to you. There is always more to learn but it helps if you go in with a good base understanding, and that was my goal. We have a range of 32 mm to 3 mm. 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. While it covers the same range as the Celestron zoom, it offers better optics, better mechanical operation, and a wider field of view. This saves money and helps you shop in an organized manner. Good value. The 5-lens-element pseudo-Masuyamas that telesonic mentioned are/were fine eyepieces. Eye Relief: This refers to how close your eye has to be to the lens in order to see the full field of view. This type of design also helps provide for eye relief; its a better experience if your eyes. 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. Again, for no other reason than to compare it to the 17mm Hyperion and draw your own conclusions about Plssls. After these, we have mostly proprietary designs from various eyepiece companies. The TFOV will be as wide as your 40mm Plssl, but with greater magnification and a slightly darker sky background. And you don't even have to get the full set if you don't want to. Omni 15mm Eyepiece - 1.25" Learn More. I want to help you select the best eyepieces for your budget and your telescope. 14 = 128 = .6 What apparent field of view and eye relief do I want? Higher values are slower and lower values are fasterthis is a holdover from camera lens terminology and has to do with exposure times.). PS. In the world of eyepieces, when you want the very best, turn to Tele Vue, but be prepared to pay a truly premium price. Find many great new & used options and get the best deals for Meade 32mm 2" 5-element Super Plossl Wide Field Eyepiece at the best online prices at eBay! They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. 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. 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. SVBONY Direct . I dont have a specific diagonal to recommend and I am not aware of any specific issues with the one that is included with the scope. I had one and sold it. This number can range from 30 degrees to 120 degrees. 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. 6.7 = 268 = .3 Now we have a maximum established. PayPal, cash, bank transfer are all acceptable. dnrmilspec is right. Yes, Plossl eyepieces are some of the most popular with amateurs and professionals alike. Their eye relief is limited to about 70-80% of their focal length. 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. 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. Many approach the quality of the premium brands. Save my name, email, and website in this browser for the next time I comment. Or is this overkill and am I better off saving money and going forward something like the Celestron Zoom? By correcting for aberrations, the field of view of these eyepieces could be much larger than the soda-straw field of view in a Ramsden or Huygens, around 40 or perhaps up to 50 degrees. Plossl telescope eyepieces are the most popular type of eyepiece on the market. Note to spectacle wearers: Plossl eyepieces with 15mm and longer focal lengths are good choices for spectacle wearers but for shorter focal lengths the Celestron XCel LX series have greater eye-relief so are better suited. A Plossl eyepiece lens provides more eye relief than anything else out there! A very good quality eyepiece for a reasonable sum. They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. . Offered in both 2 and 1.25, these are excellent eyepieces. TeleVue Naglers, Plossl and Powermates | Astromart A Plossl eyepiece has a field of view thats very wide, so if youre looking at the full moon or some other object in space with it, chances are youll see the entire thing. The view being presented to your eye in a low power eyepiece minimizes everything from optical aberrations in the telescope, to distortions from thermals or atmospheric conditions. Plssl eyepieces are good all-around performers, producing sharp images at the center of the field, but they have only four lens elements. Thanks for your comment. short answer: yes. Lets take a look. 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). https://www.widescreen-centre.co.uk/explore-scientific-70-eyepieces.html. Do you think the Baader Hyperion Zoom would work OK with the Skywatcher 150p? As we go along, I will refer back to these, so dont worry if you cant answer the questions or understand the formulas now. 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 is the link to the one I plan to buy as I know some others come with add ons: https://www.rothervalleyoptics.co.uk/baader-hyperion-mark-iv-8-24mm-universal-zoom-eyepiece.html, Thats great you had an XT8i that makes me feel confident I got a good telescope . You use the 8-24 zoom for the midrange. Plossls are available from many suppliers in a wide range of focal lengths in 1.25 and 2 sizes. The Big Bang Optics participates in the Amazon Services LLC Associates Program, which is an affiliate advertising program designed to provide a means for websites to earn advertising fees by advertising and linking to amazon.com. Today, most beginner telescopes of any quality are sold with either Kellner or Plossl eyepieces. In essence the design differences between Kellner and Plossl comes down to the number of lenses within the eyepiece barrel. They also offer a generous 16 mm of eye relief which is most important in the shorter focal lengths. It may very well last you a lifetime and in the long term, you will definitely consider it to be a worthwhile investment. https://telescopicwatch.com/best-astrophotography-telescopes/. Plossl vs Kellner Eyepieces: The Ultimate Comparison For the price, I think the eyepiece is still a good pick. With regards to budget, whatever works well and is on par with the quality & capability of the telescope. Or we say that F10 would be easier or less demanding on the eyepiece than the F5. What Is a Plossl Eyepiece - Planet Seekers From planetary viewing to deep sky watching. If you just want a quick answer, skip to the conclusion at the end of the article. You will see these under many brands, including Orion, Celestron, GSO, and others. Do you need to have the best to enjoy astronomy? If there is a local club, I would suggest you visit and consider joining. I loved my Baader Mark-IV 8mm-24mm Zoom+Barlow combo in my 8" EdgeHD. This design features 4 lenses that are paired in two close-set doublets for the eye lens and the field lens. In general terms, the higher the AFOV number, the more the eyepiece will cost. The third choice of eyepieces is the Orion 12 mm Sirius Super Wide Angle Correct Image Eyepiece. Also, note that the pricing is based on 1.25 eyepieces. The computerized pad and motor work on AA batteries which can last you a few hours. Though not the Meade. Kellner and Plossl- both are two different types of eyepieces for telescopes. I have the 38 mm and recommend it often. Im also uncertain about what to expect from an additional investment? Plossl eyepiece is good for astronomy and microscopy. At shorter focal lengths they have less eye relief, and at all focal lengths they have a narrower field of view, than newer types. A Plossl eyepiece has a lens thats plano-convex, which means it is flat on one side and convex on the other. EP-mm = magnification = afov eyepiece shows signs of use with caps and bolt case, 32 mm Plossl very good cond. Overall, I would highly recommend the goldline eyepieces. To get the best performance, you have to be willing to pay the price. Because some objects look better at low power, some at medium power, some at high power, and some at very high power. On many occasions, that will be too high power for the atmospheric conditions. 50 150X, no Barlow I owned an XT8 Intelliscope which is the same optical tube on a PushTo mount. 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.