Just give yourself some time to learn the app and to understand the scope. Some include: Parks Gold Series, Celestron Ultima's, Meade Series 4000 Super Plssls (depending on year / origin / style) and a few others that I don't remember. In addition, the eyepiece would be a Huygens or Ramsden design, where two lenses made of the same type of glass could be combined to yield minimal false color fringing, as long as the focal length of the telescope remained fairly long. They provide a range of magnifications with one eyepiece. If we combine a Barlow with an 8-24 mm zoom eyepiece, we have an amazing range. This number can range from 30 degrees to 120 degrees. Most telescopes come with one or two eyepieces. Wide view and well-corrected view, even in F5 scopes. For that purpose it is probably easier to find one to borrow. This is the link to the eyepiece I am looking at potentially buying, would you recommend this over the Orion one or vice versa do you think? In this case, I am going to define this by the focuser and eyepiece size. LCAS - The Good Old Plossl Eyepiece But I have one little niggle. But dont fear that you will waste your investment as eyepieces are standard sizes. It offers good color correction and high-contrast images. Understanding and using a Barlow Lens No price limit. In my opinion, you do not. 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. No other type can compare with it when it comes to that quality. So we say that an F5 scope benefits from better corrected eyepieces more than the F10 scope. Suggesting an F6 scope becomes an F18 would also imply things like reduced CA in a refractor. They are not that expensive I would pay about $100 for both eye pieces. Finally, a wider field of view just makes it easier to find stuff. Telescope Eyepieces | Orion Telescopes: Shop Depending on your budget, if you only have limited funds and are just starting to fill out your eyepiece collection I would go with the zoom, then zoom with Barlow. Most likely it will be used as a loaner eyepiece to go with one of my two loaner telescopes. As Im sure you know, a Barlow actually narrows the cone of light that enters the eyepiece, hence it affects the apparent focal length and thus the f/ratio of the telescope objective. They are a good brand with high-quality eyepieces, you just dont need to spend the extra money for almost no gain in performance. Or, if you are buying from an online like Amazon, then look at the eyepieces I recommend and see if any suit your needs. The magnification range that is appropriate to your scope. the reality is that today's eyepieces are all quite good, particulalarly in an f/10 telescope. And new proprietary designs come out from time to time. dnrmilspec is right. SVBONY Telescope Eyepiece Set Telescope Accessory Kit with 2x Barlow Lens 4 Element Plossl Design 6.3mm 32mm 40mm for Astronomical Telescopes. 40mm Orion Sirius Plossl Telescope Eyepiece | Orion Telescopes For what it is worth, a slow scope like your CPC9.25 (f/10?) Note that the price categories are approximate, as prices can vary between retailers. Orion SkyQuest XT8 Intelliscope Review And, in general terms, the higher the AFOV, the harder it is to make an eyepiece that will present a good image all across the field of view, which also drives up the cost. Skywatcher SP Plossl lenses - Discussions - Stargazers Lounge How Good Are Super Plossl Eyepieces for Astronomy? Stargazing Help is a participant in Amazon Associates program. Even if you did need a 4mm focal length (for high powers in an f/4 telescope, of course), neither a Kellner nor a Plossl would have long enough eye relief for that to be comfortably usable! I took notes and now can shop with confidence Lenses are fully multi-coated for excellent light transmission and reduced internal reflections. The bottom line is that it is best to have several magnification choices so you can optimize the view. 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. So its best for use during duller times when there isnt much brightness visible. The generic GSO Plssl from many manufacturers, including Astronomics (Astro Tech) and Agnena Astro, is as good as the Celestron and a few bucks cheaper. 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. In some cases, the eyepieces are waterproof to protect them from internal contamination caused by heavy dew conditions. However, for your extra money you get the finest manufacture, the best polish and coatings available. Very worth it for me, as I like to use bino-viewers. In this article, were going to talk about what is a Plossl eyepiece, what are its components, how do they work, how many types are there and how youd buy a good Plossl eyepiece. 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 Plossl eyepiece is a four-element design consisting of two doublets. As a kid, I loved looking at the moon (which can be seen any time of day, regardless of ones bedtime) so make sure that the field of view is wide enough to see the whole shebang. Can you help me. This would definitely matter to observers who wear eyglasses when viewing. Also worth mentioning i wear glasses which I will wear while observing. This type of design provides for both total magnifications as well as an erect image with little distortion. You use the 8-24 zoom for the midrange. Lets take a look. Then set your maximum based on your aperture and split it up. Well, I'll just say it. Depending on how fussy you are about having a completely clean image across the visual field, if you have a lower focal ratio scope you will want to look for eyepieces with a reputation for being better corrected in low focal ratio scopes. Warranty Limited Warranty against defects in materials or workmanship for one year from date of purchase. Tip Its almost always cheaper to buy directly from Agena Astro. This is just a planning target. If you read the article you know how to calculate the magnification and field of view. These are the workhorse eyepieces of today. Once I knew how much I liked the zoom I upgraded to the Baader Hyperion Zoom. At this point, a Plossl and a Kellner are so close in price and performance that you may as well get the Plossl. So, even if you have a Maksutov-Cassegrain scope, you should get a good experience from this eyepiece. Youd have to look into more complex designs which include a barlow lens, or simply use a longer focal length eyepiece with a quality barlow. . I agree with your comment on zooms for kids. 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. 1.25" Power mates with T ring adapter. Lets just say that once you get below F5, it is really hard for the eyepiece to deliver a clean image to the edge. Pay attention to the eye relief, especially if you will be observing with glasses. philhas Members 61 459 Location: North East England Most modern telescopes use a focuser, or diagonal, that accepts 1.25 eyepieces. My most used eyepiece is an 8-24 mm zoom. All are good eyepieces and diagonals, and would be excellent for star party use. It had one of the best fields, edge to edge, in my SCT that I've ever seen. They all work, but as you go up in price, you gain features or performance or both. There is always more to learn but it helps if you go in with a good base understanding, and that was my goal. 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. I am a BIG fan of zoom eyepieces, especially if you dont have many. At shorter focal lengths they have less eye relief, and at all focal lengths they have a narrower field of view, than newer types. 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! Plossl eyepieces have an eye relief equal to about 80% of their focal length. I currently own a Mak127 ( that can't use 2"eyepieces) and a 80ED ( that one can hold 2"eyepieces). Plossls tend to come with large, ground-standing Dobsonians, whereas youre more likely to find a Kellner sold with a tabletop Dobsonian. Planetary eyepieces: Ploessl or Orthoscopic and which brand 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. These sizes have become the industrys standard sizes. Celestron Telescopes Reviews: Should you buy? - Little Astronomy I had a TV 20mm Plossl once. 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. 5-Minute Read, How To Increase The Magnification Of A Telescope; 5-Minute Read. Stargazinghelp.com 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 linking to Amazon.com. How does that field of view impact the viewing experience? 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. It includes two high-magnification Plossl eyepieces and five lower magnification zoom oculars with an adjustable focus in the kit. Eye relief is the distance from the eye lens to your eyeball, and the higher the better (within reason). These are highly sought after ep's, and hold their value well. Rating (max 5): Generally, Plssl eyepieces are best suited to Newtonian and fast telescopes. The combination of high-quality optics and accessible prices have made them the favorite design for amateur astronomers and even professionals. The image quality is very good and the additional field of view and longer eye relief makes them very comfortable to use. ES 82 degree series plus 1 meade uwa @20 mm with 1800 focal length optical tube lowest mag 51 x / highest mag 300. Any exit pupil between 7 mm and .5 mm is just fine. 100-300X, 2X Barlow. Non-eyeglass wearers can usually tolerate Plossls as short as about 10-12mm before their eyelashes start brushing the ocular lens. 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. Differences and Similarities. IF you like your Hyperions , you could get a 2 inch visual back and 2 inch diagonal / or 2 inch SCT diagonal and add the 31 or 36 Baader eyepieces in 2 inch . Thanks for a very helpful guide. To get the best performance, you have to be willing to pay the price. 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. Note that as we get into the higher magnifications, the millimeter jumps between eyepiece focal lengths gets smaller. 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. 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. High-quality Plssl eyepieces provide high contrast and sharpness across the entire field of view. Scott. I want these as possible as wide, magnification and astrophotography purpose. But what are the other differences? There are so many others at comparable or higher prices, many of which are quite good and some rather poor. This might contain more of what you need. So yeah, they are good.. and some are even better than others, and more collectible. I would recommend the Baader Hyperion Zoom for any telescope. And the zoom provides every magnification in that range without having to change eyepieces. But some people demand the very best, and it is available, at a price. There is the 56mm Meade Plossl which magically turns my short FL refractors into their own finder scopes. 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 . I can say that most of my plossls have been replaced by other eyepieces for various reasons. I recently purchased the SVBony 7-21 zoom from Amazon. This will become more apparent the wider the AFOV is of the eyepiece, in my experience. Pentax K-70 Astrophotography: The Ultimate Camera on a Budget! As for tabletop scopes, dont forget that you need a table, stool, or bench to place them. Here we focus on becoming a knowledge hub for astronomy and astrophotography enthusiasts. Omni 9mm Eyepiece - 1.25" Learn More. The sharp/crisp view you get from your 40mm Plossl comes down to the relatively low magnification it provides. In general terms, the higher the AFOV number, the more the eyepiece will cost. When you use a Barlow lens with an eyepiece, you get the magnification, but the eye relief is not affected. Good quality plossl eyepieces - Discussions - Stargazers Lounge Do you need a 10 mm planetary and a 10 mm DSO eyepiece? Now we just divide it up and fill in some sample focal lengths. Celestron 2026 Erecting Prism Barlow Lens Set is well suited as an astronomical viewing lens kit or for enjoying terrestrial sights like nature walks, sporting events, and more! The difference isnt that severe, and I often track more often than is strictly necessary to keep the object centered anyway. And you don't even have to get the full set if you don't want to. Despite this, I also have some Plossls which are indispensable. For visual use, 1.5X, 2X, 2.5X, and 3X Barlow lenses are common. 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! Divide that by the magnification of that eyepiece in that scope. Orion Sirius Plossl 10mm telescope eyepiece 1.25" in very good to excellent 185794462395 condition as described, a good transaction. My Meade 4000 56 and 60 degree Meade Plossls are pretty sharp to my eyes and do pretty well for me. https://www.amazon.com/Explore-Scientific-68%C2%B0-40mm-Eyepiece/dp/B007LMG3F6/ref=sr_1_1?dchild=1&keywords=explore+scientific+68&qid=1606584676&sr=8-1, Thanks for your reply, I think I will go for the Orion Q70 . Have Any Astronauts Been Lost in Space Forever. 50 150X, no Barlow I am very near-sighted, barely see the big E on the vision chart without glasses. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Since 2011, we've published astronomy related content and reviews to help guide the community better. As to a more immersive experience, yes, I would say a wider FOV does provide a more immersive experience. An exit pupil larger than 6 mm may start to show a shadow of the secondary mirror. These companies rebranded them under their own names. Because some objects look better at low power, some at medium power, some at high power, and some at very high power. 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. These are often compared to the higher priced offerings. 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. These are the best in optical performance and build quality. Celestron Omni Plossl Eyepiece | First Light Optics A key thing to remember is that eyepieces are universal. But those EPs mentioned were all great too! EP-mm = magnification = afov As is outstanding in the workmanship, a Plossl type eyepiece is a moderately wide field eyepiece involving two colorless doublets in which the crown components generally face each other. Heres the short answer Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. I once had to use a 6mm Plossl to attempt to perform a star-test collimation for a telescope at the observatory. Telescope Eyepieces Guide - High Point Scientific I have to say that your questions are answered in the article. Goldline series of eyepieces provides the best value in this price range, better than Plossls. I have owned wider eyepieces, but ultimately I just prefer the Plssls (must be a mental defect). This SVBONY eyepiece review should get you up to speed with the budget stargazing options. Edge sharpness is just satisfactory, nothing to boast about, as is the apparent field of view. With the XT8i I usually used the zoom configured with a 1.5X Barlow giving me a 75X to 225X which I found to be nearly perfect for that scope. Its quite long but that is what we are aiming for and hopefully, it was useful to you. Thanks for going through the entire post. Pentax 10.5mm Eye Piece Excellent Condition (#314374986239) r***d (1910 . AP is all about the mount and accurate tracking. If the above guide has helped you understand the terms and workings of eyepieces, scroll up and make a selection from our recommendation list. 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. Kellner eyepieces have 3 lenses cemented together and have a 35-50 degree field of view. . The Expanse is a lens that provides an extra sharp image, and it also has a wider field of view compared to the Plossl eyepiece. And I continue to read excellent reports on the AT Paradigm and similar under different labels. By the 1980s, amateur astronomy equipment suppliers were still selling new telescopes with Huygens and Ramsden eyepieces, not merely because they were cheap but because they lacked internal reflections. Plossls are the clear winner here in most cases, unless you have one of the wider-field 50-degree Kellners. Can you suggest the total . 70 mm scope will have a max of 140X for planning purposes. The Plossl eyepiece has 4 lenses, consisting of 2 identical double lenses. This was my first zoom eyepiece and the one that caused me to fall in love with zoom. The result in magnification is the same and the eye relief associated with the eyepiece is retained or, in some cases, actually lengthened a bit. https://telescopicwatch.com/?s=barlow, Best of luck with your new telescope. The difference in TFOV will be significant at this focal length. Newer multi-coatings are better, I suppose, but newer does not always mean better in the ocular game.
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are plossl eyepieces good