Plossl eyepieces are perfect for astronomical viewing because the field of view is wider. I also struggled to see features on both (gas bands on Jupiter and clear rings on saturn). Meanwhile, Plossl eyepieces are much more common and easy to find. Perhaps you have read about planetary eyepieces, DSO eyepieces, and other types of specific eyepieces. The 26 and 32 are usually the first ones I reach for. This 10 mm Orion Sirius Plossl Eyepiece is a great, moderately high power ocular for observing small planetary nebulas and globular star clusters, as well as for planetary probing when seeing conditions don't permit higher magnifications. It allows each eyepiece to provide two magnifications. Plossl against Kellner eyepieces in a previous article, 5 Budget Telescopes That Are Sneakily Powerful. Here we get into the BMW, Cadillac, Porsche, and Ferrari of eyepieces. A common problem are eyepiece kits, which are big boxes that some telescope suppliers will sell you with half a dozen eyepieces, most of which include annoyingly short focal length Plossl eyepieces. Differences and Similarities. A standard Plossl eyepiece is typically between 20mm to 25mm but can range anywhere from 15mm up to about 40mm in diameter. So if you need to go to Arcturus and then go 2 degrees to the right to find your target, you can use the FOV of the eyepiece to estimate 2 degrees. 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. It all comes down to cost-benefit. However, because they have more glass elements than other designs, like Kellners, their manufacturing becomes extremely important to get high-quality optics. For visual use, 1.5X, 2X, 2.5X, and 3X Barlow lenses are common. 50 150X, no Barlow The availability of good quality relatively wide field-of-view inexpensive eyepieces has kind of put them in the second tier of eyepieces, but they still hold their own in the longer focal lengths and excel if one does not demand a wide field-of-view. Eyepieces are a religion. Better edge correction with a short-focus telescope is one of the things you pay extra money for, and sophisticated eyepiece designs have as many as eight elements. 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! 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. https://www.widescreen-centre.co.uk/explore-scientific-70-eyepieces.html. https://telescopicwatch.com/best-telescope-mounts-for-astrophotography/, Then you look at the optical tubes. 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. Other brands have joined and have used the Super Plossl label, but they all keep the original 4-piece design. 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. The eye relief is the distance between your eyes and the eyepiece where you are able to view the whole image comfortably. I had a TV 20mm Plossl once. It's no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. I also really liked my E-Lux 32mm, a Kellner. 4mm Eyepiece vs 20mm Eyepiece. What apparent field of view and eye relief do I want? 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. A large field lens makes the ocular easy to look into. Omni 9mm Eyepiece - 1.25" Learn More. Correct image diagonals are easier for beginners and they are great for using the scope during the day, but experience people dont use them for astronomy. Apparent Field of View: This is a measure of how wide a view the eyepiece will provide as compared to alternate eyepieces. You can add the specialty single FL eyepieces later if you wish. Each eyepiece gives you a unique magnification based on the formula listed at the start: Why do you need more than two eyepieces? It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. These and the essentially identical AT Paradigm are universally praised as good quality eyepieces with a wider 60-degree apparent field of view. But the longer FL units are certainly useful. Just give yourself some time to learn the app and to understand the scope. Do I need an adapter if my scope has a Plossl lens? Finally, a wider field of view just makes it easier to find stuff. In the case of the Celestron, you get all the focal lengths from 24 to 8mm in one eyepiece that costs $100. They provide a range of magnifications with one eyepiece. Your email address will not be published. If you were considering a Meade Super Plossl, in that case just get the regular one also by Meade. Lower power almost always looks better than higher power. A Plossl eyepiece is one of the most decent general-purpose eyepieces that are available on the market. Tip Its almost always cheaper to buy directly from Agena Astro. It offers good color correction and high-contrast images. A Barlow lens can save you money and add flexibility. The TFOV of the Hyperion will be greater than the TFOV of the Plssl, but the magnification will be about the same. It was grueling, because I couldnt even get the entire field of viewI had to keep my eye hovering above the exit pupil. Now looking for a couple of decent eyepieces. The field of view of a p Plossl eyepiece is typically 60 to 120 degrees. Worth it is a tough question to answer. Plossls are available from many suppliers in a wide range of focal lengths in 1.25 and 2 sizes. When a beginner is choosing eyepieces on a budget, there are a number of possible designs they may choose between. 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. Plossl eyepieces are typically used for observing and viewing things at long distances, but they can also be useful when using a telescope to provide both magnifying power and erecting the images. I have several 10mm eyepieces in my eyepiece boxalmost all of them are eyepieces that came with some telescope I boughtand I will almost always choose to use one of the Kellners over one of the Plossls, because the Kellners have a longer eye relief, which is comparable to the focal length. They are all made by the same OEM manufacturer. I continue to be very pleased with the ES82 eyepieces. Telescopes Cost: Acceptable, Good, and Really Good Telescopes, Used Telescopes Buying Guide The Complete Guide, Different Types of Asteroids (C, S, and M) The Definitive Guide, Top 10 Night Sky Objects for Astronomy Beginners, Asteroid Mining Know Everything About It, German Equatorial Mounts (GEMs) Overview and Working. 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. It costs three to four times as much as the Celestron Zoom, but if you have the budget, this is the one to get. Fortunately, the investment can be leveraged with future scopes since eyepieces are standard sizes so they work in almost any telescope. I owned an XT8 Intelliscope which is the same optical tube on a PushTo mount. 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. 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. Between $100 and $250, I will call it mid-range. Now, for my one or two low power eyepieces, I also like to know the field of view provided by that eyepiece. 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. That is why I suggest, if you can use 2 eyepieces, you will want one or two low power wide view 2 eyepieces. 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. Plossl eyepiece is good for astronomy and microscopy. 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. It uses two symmetrical pairs of glass elements (one convex and one concave) to pass the light. Some accept 2 and have an adapter that allows you to also use 1.25. This is why many telescopes come standard with at least one Plossl eyepiece. In our example, we targeted 200X as the top magnification. It has made learning the Constellations and star-hopping more fun and engaging for my whole family exactly what I was hoping for. If we look at the range I provided above, we see that we could replace several eyepieces with one zoom. Yes, the wider field of view of a Plossl is very helpful, but 40 degrees of Kellners isnt a soda straw (unless you are used to looking through very wide field eyepiece. Scott. . I hear that, sometimes you find one that is sweeter than others. Hi Ed, However, there can be a problem bringing the eyepiece into focus. This series of eyepieces may provide better value in this price range. Any exit pupil between 7 mm and .5 mm is just fine. This means you will be able to see a greater expanse for the objects in space but with fewer magnification levels than Kellner or Plossl lenses. Just start with 32 mm for your low-power eyepiece. So I sincerely hope that this article helps you understand the similarities and differences between Plossl and Kellner eyepieces so that you can an informed decision and choose the best one for yourself. Those are significantly more expensive than the 1.25 focal lengths. I possess an embarrassing array of fine eyepieces with names like Ethos and Nagler and Delos. Do you have any additional comments to help me? Aspheric eyepiece is a variation of Plossl design, it has an anti-reflection coating on the front glass surface to ensure maximum light transmission and will also provide your instrument with better quality images if you need higher magnification levels. I was looking on a OPT website and they have celestron 32mm and 15mm plossl. At least you'll have one budget eyepiece that will give you a larger part of the sky at low magnification. The quality of a Plossl eyepiece completely depends on the brand and model, so be very careful in our selection. Comparing Orion Telescope & Binoculars options, it appears that a Kellner can be found for almost half the price of a Plossl of the same focal length, although there are also equally cheap Plossls available from various sellers on Amazon that are highly comparable. Are plossl eyepieces still worth it? The zoom can be used with any 1.25 focuser too. Plossl and Kellner eyepieces are two very common examples of a simple eyepiece design, and they are probably the most common type of eyepiece you are likely to come across when eyepieces have been bundled with a telescope; they are also a very common aftermarket accessory. This will become more apparent the wider the AFOV is of the eyepiece, in my experience. Field of view, is about finding, framing, drift time, and context. No results, please adjust your filters. 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 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? No price limit? This saves money and helps you shop in an organized manner. We enjoy binoculars for the moon, but having never looked through another telescope, my kids and I do not know what internal reflection, ghosting, vignettes, or diffraction spikes look like! Not everything in the sky benefits from high magnification. Note that as we get into the higher magnifications, the millimeter jumps between eyepiece focal lengths gets smaller. Is it just about finding and framing, or do wide fov EPs create a more immersive experience? You are asking about a very specific eyepiece in a very specific scope combined sometimes with a Barlow. That's hard to beat IMO. So you ended up with: 75-225X, 1.5X Barlow https://telescopicwatch.com/best-telescope-eyepieces/. Astrophotography with Nikon D3200: Can It Be Better? If youre still wondering between a Kellner vs Plossl, my advice to you would be invest a little extra cash and go for a good quality Plossl. The 4000 SWA's were way overpriced for their performance IMHO. Even if the scope comes with the more acceptable Kelner or . However, i can read very well without my glasses with almost microscopic vision and can use my binoculars without glasses. Yes, Plossl eyepieces are some of the most popular with amateurs and professionals alike. Imagine you are looking at the moon with each of these eyepieces and consider what you would see. Their 50 to 52 degree AFOV is wide enough for general observing. I also have a 25mm plossl and am happy with that. Not perfect to the edge but better than the Bresser, in my opinion. I am not aware of any such solutions for Newtonian reflectors. Pentax 10.5mm Eye Piece Excellent Condition (#314374986239) r***d (1910 . Omni 6mm Eyepiece - 1.25" Learn More. https://www.amazon.com/s?k=Orion+Q70&ref=nb_sb_noss_2, Understanding Telescope Eyepieces- There are recommendations, based on budget, Non-eyeglass wearers can usually tolerate Plossls as short as about 10-12mm before their eyelashes start brushing the ocular lens. Modified vs Unmodified DSLR Astrophotography: The Ultimate Showdown! I really like the simplicity and compactness of these simpler designs (ie: Plssls, Orthos, Kellners, etc). Press Esc to cancel. 1:10 . Also, note that the pricing is based on 1.25 eyepieces. I possess an embarrassing array of fine eyepieces with names like Ethos and Nagler and Delos. That is the critical factor. A Kellner eyepiece has 3 lenses, while a Plossl has 4. While eyepieces with relatively complex, proprietary, or bespoke designs are becoming more commonly available in the beginner price bracket, there is often good reason to choose a much simpler design. The ES 82s are my favorite eyepieces, especially in the 1.25 format. The Plossl has good color correction plus is free of the ghost images that plague the Kellner. I had a bino pair of TV 20mm Plossls, very fine for high power planetary observation with my long focus 8" Mak, then I also bought the older TV 21mm Plossl, after trying the 21mm I sold the more recent 20mm. but the meat of the article is about understanding the considerations and specifications to know when selecting eyepieces.
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