Hi Ed, A Plssl is probably as good as any 32mm eyepiece in a 1.25 inch focuser. Most people prefer the wider TFOV. I foolishly destroyed it while experimenting with solar projection, because I hadnt realized the metal-and-glass construction was aided by a plastic retaining ring on the field stop, and I hadnt realized you do not need to change the eyepiece focal length when doing solar projection. To get the best performance, you have to be willing to pay the price. If you go this route, you can always add single focal length eyepieces along the way to serve specialized purposes. I have used both Kellner & Plossl eyepieces and a few others, and I can tell you that they all are quite different from each other in terms of the quality of the image that they produce. Do you think the Baader Hyperion Zoom would work OK with the Skywatcher 150p? The third choice of eyepieces is the Orion 12 mm Sirius Super Wide Angle Correct Image Eyepiece. Plossl eyepieces have an eye relief equal to about 80% of their focal length. 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. That's hard to beat IMO. Plossl against Kellner eyepieces in a previous article, 5 Budget Telescopes That Are Sneakily Powerful. Are plossl eyepieces still worth it? I continue to be very pleased with the ES82 eyepieces. Not all are Plossls, but excellent eps at f/10. Astrophotography with Nikon D3200: Can It Be Better? Of course, for the cost of the two Plossls, you could justify having them as spares or outreach EPs. Thus the 30 mm eyepiece in a 600 mm telescope produces 600/30 = 20X magnification while with the Barlow, we have 1800/30 = 60X. Because of this setup, you might also hear a Plossl eyepiece referred to as a symmetrical eyepiece. 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. Or is this overkill and am I better off saving money and going forward something like the Celestron Zoom? (Svbonys Plossls, for example, are optically identical to Orions Sirius Plossls). https://www.amazon.com/s?k=Orion+Q70&ref=nb_sb_noss_2, Understanding Telescope Eyepieces- There are recommendations, based on budget, Then there is the rule of thumb to avoid duplicating focal lengths when acquiring eyepieces. Do you need a 10 mm planetary and a 10 mm DSO eyepiece? Typically, these will be 25 mm and 10 mm or something close to that. Or take one of your eyepieces and measure across the bottom of the barrel. 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. 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. Something in the 30 to 38 mm range with a 65 to 70 degree AFOV. Finally, the worldwide pandemic has led to shortages and price jumps on many items. I have had a good experience with the SVBony brand and the Agena Astro brand. I already got the 10mm super wide because of the added eye relief but at 15mm both have the same eye relief. 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. We are a reader-supported organization. But what are the other differences? Overall, I would highly recommend the goldline eyepieces. 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. However, some eyepieces have an eye relief as short as 5 mm. 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. 17mm Plossl, unbranded, used, no caps, in bolt case; previous owner said it was a very good EP; $18 25mm Plossl, Orion Sirius, fully MgF2 coated on every air-to-glass surface; used; $23 (these are a step up from . Or, you may find that you like the 8 mm and 6 mm used with the Barlow and can avoid the expense of two eyepieces. You will get varying opinions on this but I would not worry too much about this. I had a newer - purchased in 2016 Meade 32mm (white lettering) that was no better than the older 32mm 4000. And new proprietary designs come out from time to time. short answer: yes. Thanks for your comment. ES 82 degree series plus 1 meade uwa @20 mm with 1800 focal length optical tube lowest mag 51 x / highest mag 300. Was $38.99 - $99.99 Now $31.19 - $84.99 Compare Orion Edge-On Planetary 1.25" Eyepieces 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 . But the conventional way of expressing it is in terms of eyepiece focal lengths. In that respect, they are similar to the Explore Scientific 82 degree mentioned earlier. To achieve six magnifications, you can have six eyepieces. Can you suggest the total . So, basically a Plossl eyepiece is a type of eyepiece that enables the viewer to see a wider field of view than would normally be the case, but at the cost of him/her having to physically put his eye very close to the lens of the eyepiece. Press Esc to cancel. Plossl eyepieces are great. That is why I suggest, if you can use 2 eyepieces, you will want one or two low power wide view 2 eyepieces. Just give yourself some time to learn the app and to understand the scope. Super Plossls offer a smaller field of view, which makes them good for close-up views and examining small objects. 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. Here's the short answer - Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. Kellner eyepieces were first designed by Carl Kellner in 1849. I really enjoy usingPlssls. 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. https://telescopicwatch.com/celestron-starsense-explorer-dx-102-130-reviewed/, If I was to upgrade these lenses, I was planning on working toward something like this: They also have good eye relief, making them comfortable to use for extended periods. This design has some advantages over other designs, such as the Kellner eyepiece or Orthoscopic eyepieces. Look those up, seeing and transparency in the context of astronomy. These are the best in optical performance and build quality. With modern multi-coated optics that thwart internal reflections, Plossls and Kellners have little difference in glare or transmission/opacity. What should one opt for a 2 EP over a 1.25? A Plssl is probably as good as any 32mm eyepiece in a 1.25 inch focuser. What Does It Do. Many brands of eyepieces are available, including SVBony UltraWide, Astromania UltraWide Angle, Agena Astro StarGuider Enhanced UltraWide Angle and others. Plossl eyepieces have a wider field of view that can go from 50 to 56 degrees. Some people have more than 6 and some have as few as 3. 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. This determines how much light the telescope will gather. In my opinion, there are no wrong exit pupils. 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. See if you will observe with or without your glasses. Thanks so much. 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. 32 mm = 18.75X 16 mm = 37.5X (32 mm eyepiece with a 2X barlow), 12 mm = 50X (If you have a 25 mm that came with your scope, use Barlow for 12.5 mm), 4 mm = 150X (8 mm eyepiece with a 2X Barlow), 3 mm = 200X (6 mm eyepiece with a 2X Barlow), 24 mm = 25X (the low power end of the zoom), 8 mm = 75X (24 mm zoom setting in a 3X Barlow), 2.66 mm = 225X (8 mm zoom setting in a 3X Barlow), True field of view or FOV = Apparent field of view (AFOV) eyepiece / magnification. But with 2 eyepieces and a Barlow, you have the full effective range of your telescope. Again, does it create a more immersive viewing experience? The way a Plossl eyepiece works is by using the convex lens and concave lenses to create an image that has both total magnification of what youre viewing, as well as erect images. The "sharpness" you are seeing may well be better explained by the focal length of the ep than the quality of Plossls in general. 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. There are inexpensive adapters that will let you use standard 1.25 eyepieces in a .965 focuser/diagonal. My 20, 26, and 32mm Plossls will probably stay around. It also produces an erect image, meaning you see what youre viewing rather than seeing everything upside down or sideways as some types do. The field of view of the eyepiece has a few effects when it comes to actually using it in the telescope. A Kellner eyepiece has 1 double lens and 1 single lens. I dont own nor have I used it, but Orion has a very good reputation. Just start with 32 mm for your low-power eyepiece. That said, I should also tell you that not all Plossls are created equal. In most cases, these are eyepieces that are focused on wider AFOV or better correction for low focal ratio scopes. thanks Ed. 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). The difference isnt that severe, and I often track more often than is strictly necessary to keep the object centered anyway. When you add eyepieces to your collection, you will want to consider what field of view you want and how much you are willing to pay for it. Fully coated optics provide crisp and bright views of the cosmos. Hi Ed, that is really helpful sorry if this is a daft question but is the baader hyperion 2 or 1.25 or can it be both? Magnification or power = focal length telescope / focal length eyepiece, Focal ratio = focal length telescope / aperture telescope, maximum practical aperture = aperture X 2, Edges of the optics are blackened for increased contrast, which prevents internal reflections, Anti-reflection, fully multi-coated optics provide enhanced light transmission for bright and clear images. While it covers the same range as the Celestron zoom, it offers better optics, better mechanical operation, and a wider field of view. When I was getting my start in the hobby, I bought an ultra-cheap ($15?) This can be debated 100 ways, but that is my advice. Edge sharpness is just satisfactory, nothing to boast about, as is the apparent field of view. They all work, but as you go up in price, you gain features or performance or both. A 2 barrel on the eyepiece will allow the manufacturer to create an eyepiece that provides a wider field of view. From planetary viewing to deep sky watching. In this article, we will only focus on the differences between Plossl and Kellner eyepieces. You can do the calculation which will show that the 70 will have a significantly wider field of view as compared to the 52. Ideally, you want a minimum of three eyepieces for (1) low power (2) peak visual acuity and (3) high-power viewing. 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. I am going to use 6. Was compairing the Apertura standard 15mm Plossl with their 15mm super wide angle eyepiece (70 afov). It has made learning the Constellations and star-hopping more fun and engaging for my whole family exactly what I was hoping for. The more light that is gathered, the more magnification that can be applied to the image, up to the limits that are imposed by the atmosphere. Like going from a 32 TV to a 65? My own lineup (with a C8) is 32mm Plossl, 18.2mm DeLite, and 10.5mm Pentax (the last one not chosen to match, but rather because it belonged to a deceased friend). The original design for Plossl eyepieces has existed since 1860. I have Celestron and the Baader Hyperion. Can you give me any specific recommendations on what to buy and from where? 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. 32 mm = 18.75X12 mm = 50X8 mm = 75X6 mm = 100X4 mm = 150X3 mm = 200X. Most people will be fairly comfortable with eye relief of 12 mm or higher. That is a wonderful expression. 20 = 90 = .8 Question: would it perform well with 1.5/2x and 3x Barlows? The atmosphere is typically the limiting factor as we get to higher magnifications. 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! Your email address will not be published. AP is all about the mount and accurate tracking. THANK YOU x 12! 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! It is all about your budget, your goals, and your objectives, as outlined in the article. This type of design provides for both total magnifications as well as an erect image with little distortion. A 32mm plossl eyepiece and a 2x barlow lens should be enough to give you a good range of eyepieces for every use case. However, for your extra money you get the finest manufacture, the best polish and coatings available. If your focuser/diagonal will accept 2 eyepieces, then I will suggest you get one or two 2 eyepieces for your low power wide view eyepieces. Suggesting an F6 scope becomes an F18 would also imply things like reduced CA in a refractor. 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. In some cases, the eyepieces are waterproof to protect them from internal contamination caused by heavy dew conditions. But, at least get the 32mm Plssl. These are often compared to the higher priced offerings. 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 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. This might contain more of what you need. I do not miss beating my eyelashes against a 9.7mm Meade Plossl that I used to own. A Kellner eyepiece has 3 lenses, while a Plossl has 4. You also get 7 1.25 filters which include the following, #80A Blue Filter, #58 Green Filter, #56 Light Green Filter, #25 Red Filter, #21 . In the next section, we will talk about the AFOV of an eyepiece. You can buy a range of these from Modern Astronomy. They deliver sharp images in almost all telescopes. High-quality Plssl eyepieces provide high contrast and sharpness across the entire field of view. Plssl's were top of the line at one time, and are still being sold today, so that says something too. 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. (Compare, for instance, 20mm of each type, or 10mm of each type.) Apparent Field of View: This is a measure of how wide a view the eyepiece will provide as compared to alternate eyepieces. If you just want a quick answer, skip to the conclusion at the end of the article. Outstanding job Jack. So speaking of the Barlow as if it modifies the FL of the eyepiece, while technically not correct, does provide an easier model to understand the net effect. Differences and Similarities. They also offer a generous 16 mm of eye relief which is most important in the shorter focal lengths. I have seen some gatekeeping in this hobby about Kellners, and Im not sure I understand it. 2. 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. It had one of the best fields, edge to edge, in my SCT that I've ever seen. Other eyepieces of more advanced design can have better eye relief and field of view. 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. Does this sound like something you would recommend based on the telescope I have? 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. The only one not in the article is the Orion Q70 which is available in 38 mm, 32 mm and 26 mm. It comes with two Barlow lenses, one Newtonian eyepiece, and three Plossl eyepieces in the set. Note that the Explore Scientific 68 and 82 degree eyepieces are also available in 2 size for your low power wide view requirements. Kellners are the other popular design for amateur stargazing, go ahead and check out that article if you want to dive deeper into the subject. The one exception I would keep in mind would be when working with Newtonian reflector telescopes below F5. - 32mm plossl. Because some objects look better at low power, some at medium power, some at high power, and some at very high power. Because the eyepiece was still similar enough to a Plossl and still kept the symmetrical design, they called it Super Plossl. The biggest advantage is much better ER in a large ocular. How does that field of view impact the viewing experience? Worth it is a tough question to answer. Each eyepiece gives you a unique magnification based on the formula listed at the start: Why do you need more than two eyepieces? Compared with a zoomable telescope eyepiece, they are pretty much the same in terms of the quality of the image. Omni 6mm Eyepiece - 1.25" Learn More. Wide view and well-corrected view, even in F5 scopes. . 32mm (20x & 40x). thanks for all your help. 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. Again, this is more noticeable in lower focal ratio scopes. or a Baader Classic Ortho 18mm with both a 1.5/2x Barlow and 3x Barlow. But the longer FL units are certainly useful. I often recommend it. It's no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. You mentioned regarding ORTHO eyepieces: Excellent specialty eyepieces, usually for planets. This is why many telescopes come standard with at least one Plossl eyepiece. Plossl eyepieces have wider fields of view than Kellners. However, you may see them at higher prices for the short term. To say it a different way, in general, an F5 scope will place more demands on the eyepiece around the edge of the field of view than an F10 scope. 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? Omni 12mm Eyepiece - 1.25" Learn More. 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. There is no problem using a Celestron eyepiece in a Meade telescope, for example. Or, if you are buying from an online like Amazon, then look at the eyepieces I recommend and see if any suit your needs. It comes with 1.25 Plossls 25mm (26x) and 10mm (66x) eyepieces. Today, most beginner telescopes of any quality are sold with either Kellner or Plossl eyepieces. 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. a Celestron 8-24 Zoom with a 2x Barlow Put the zoom on the Barlow for the high range. 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.. The Astrovid 40X60mm Zoom Telescope Camera Lens Kit is a great choice for those looking to get a variety of lenses, at different magnifications. The image will be reversed left to right so you will need to get used to that. If you are new around here and you want to get started with the hobby, check out our astronomy for beginners guide or the recommended gear page. For the price, I think the eyepiece is still a good pick. Warranty Limited Warranty against defects in materials or workmanship for one year from date of purchase. 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. Tip Its almost always cheaper to buy directly from Agena Astro. Many compare these favorably to eyepieces that are much higher priced. You can accomplish a longer eye relief by barlowing a longer f/l plossl, so that is something to think about as well. There are some very good choices in this range. It costs a lot to get that last 10% of performance. 100-300X, 2X Barlow. They offer a 52-degree apparent field with clean, high-contrast images. What focal length eyepieces should I buy? Regular Plossl eyepieces with maybe just a slightly better coating or build quality. Newer multi-coatings are better, I suppose, but newer does not always mean better in the ocular game. The basic design hasnt changed much, but the real costs of manufacturing have dropped. I have to say that your questions are answered in the article. Some accept 2 and have an adapter that allows you to also use 1.25. A 6mm Plossl has a tiny eye lens. Finally, a wider field of view just makes it easier to find stuff. I would recommend the Baader Hyperion Zoom for any telescope. They are not that expensive I would pay about $100 for both eye pieces. This also makes them more resistant to any form of dust getting inside the eyepiece. If you are buying your first telescope, and you are choosing between the telescope that includes a Kellner or a telescope that comes with a Plossl, with all the other specs being similar, pick the telescope thats offering you the Plossl, even if its slightly more expensive.
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