Thank you so much for taking the time to provide all this information! These are matters of individual preference and budget. So, even if you have a Maksutov-Cassegrain scope, you should get a good experience from this eyepiece. Also worth mentioning i wear glasses which I will wear while observing. 1:10 . Plossl eyepieces have a wide FOV and are known for their clarity and sharpness. Customer reviews Average Rating (16 Reviews): Write a Review and share your opinions! The design uses a planoconvex, two cemented-element eye lens and a large convex field lens. Something in the 30 to 38 mm range with a 65 to 70 degree AFOV. And the zoom provides every magnification in that range without having to change eyepieces. To achieve a maximum of 200X (2X the aperture of 100 mm), we solve for the focal length. 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. I consider the Plossl to be the minimum standard for a good eyepiece. They all work, but as you go up in price, you gain features or performance or both. However, sometimes i am at the end of the range of the binocular focus adjustment. That is the critical factor. Super Plossls offer a smaller field of view, which makes them good for close-up views and examining small objects. But in this scope, the 32 mm doesnt work well. They also have good eye relief, making them comfortable to use for extended periods. Orion Sirius Plossl 1.25" eyepieces are ideal for all types of telescopes: reflector, refractor, and catadioptrics such as Maksutov-Cassegrains. If you just want a quick answer, skip to the conclusion at the end of the article. Plossl eyepiece is one of the reasonable options when it comes to telescope eyepieces for stargazing or astronomy. As a result, this can cause aberrations in the image as you move from the center of the view toward the edges. short answer: yes. Let us know in the comments if there is anything else you want to ask or share your thoughts on this post, always looking forward to feedback from others who will benefit from it as well! OHHH, now i get it! As to a more immersive experience, yes, I would say a wider FOV does provide a more immersive experience. I am a BIG fan of zoom eyepieces, especially if you dont have many. 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. I agree with your comment on zooms for kids. Aspheric and Plossl Plossl are both lens designs that can be used in most telescopes. Well-made lenses are expensive though, so in general the more lenses, the higher the price of the eyepiece. This eyepiece was even better at correcting false color fringing, but because of internal reflections, the glare was even worse. 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. When I was getting my start in the hobby, I bought an ultra-cheap ($15?) Between Kellners and Plossls, this means a 32mm Plossl, which maximizes the field of view in the 1.25 barrel diameter format, will show more stars than either a 32mm Kellner with the same magnification but a smaller true field of view, or a 40mm Kellner (or 40mm 1.25 Plossl, which has a 40 degree apparent field of view) with a lower magnification and the same true field of view. In the world of eyepieces, when you want the very best, turn to Tele Vue, but be prepared to pay a truly premium price. I need your advice on it. How Good Are Super Plossl Eyepieces for Astronomy? Those that still come with Huygens and Ramsdens are generally cheap and low quality, since practically the only reason to use those designs in modern times is that they are extremely cheap to manufacture. Well, I'll just say it. Most telescopes come with one or two eyepieces, which gives you one or two magnification options. So, I am going to organize the guide around five questions and four formulas. But the longer FL units are certainly useful. 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. But, if you have a plan, you can fill in those slots, working toward a well-balanced set of magnifications. 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. A large field lens makes the ocular easy to look into. For modern eyepieces, the differences between Plossl and Super Plossl is going to depend on the manufacturer. To determine a magnification range, we will start with the aperture of the telescope, the size of the front lens, or the mirror in the back. I couldnt find any suggestions on your site about diagonal recommendations. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Stargazing Help came into existence when some young minds got mesmerized by outer space while camping. Any exit pupil between 7 mm and .5 mm is just fine. Understanding and using a Barlow Lens NEW. If the above guide has helped you understand the terms and workings of eyepieces, scroll up and make a selection from our recommendation list. This can be especially helpful in telescopes of focal ratios below F8. Pay attention to the eye relief, especially if you will be observing with glasses. The ES is actually slightly cheaper than the Orion but my understanding from your reviews and replies is that ES might actually be the better eyepiece have I got that right? 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. I see that there are some optical limits to how wide an FOV a 1.25 EP can manage at bigger (like 32mm) focal lengths. So its best for use during duller times when there isnt much brightness visible. In the early days of telescopic astronomy, refractor telescopes were designed with a single lens at the front and a single lens at the back. If money is not a concern, you cant go wrong with Tele Vue eyepieces, any Tele Vue eyepieces. A rubber safety cap protects the lens when not in use while also providing additional grip on this 35 mm Plossl eyepiece. 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. I need some eyepieces with long FL for low magnifications. I often had to drop back to about 180X because of poor seeing and transparency. Can you suggest the total . This can be very helpful for star hopping. Very nice article. Here's the short answer - Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. Come join the newest, most engaging and inclusive astronomy forum geared for beginners and advanced telescope users, astrophotography devotees, plus check out our "Astro" goods vendors. As the clear cut worlds best eyepiece manufacturer, their name should at least be mentioned in an article like this. It's no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. It's one of the best choices you have when it comes to budget stargazing. Modified vs Unmodified DSLR Astrophotography: The Ultimate Showdown! I did sell them all when I adopted Dioptrx, and the Naglers are amazing! These are two very important considerations when you are looking for eyepieces. 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. Omni 9mm Eyepiece - 1.25" Learn More. Now we can establish a target magnification range. For that purpose it is probably easier to find one to borrow. If we want to get VERY specific to a combination then inherent aberrations of this scope and that eyepiece could produce a unique result. There was an old Meade Super-Plossl design that used an additional lens element and could reach a wider field of view. They are all made by the same OEM manufacturer. Here we focus on becoming a knowledge hub for astronomy and astrophotography enthusiasts. Higher values are slower and lower values are fasterthis is a holdover from camera lens terminology and has to do with exposure times.). 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. Free shipping for many products! 2x Barlow Are Plossl eyepieces any good? What Is A Barlow Lens For A Telescope? Take a look at your manual or users guide. Etc.? I must say Im quite confused about eyepieces. I have just one Meade product currently and that is a series 4000 1.25 inch UHC type filter which I use for outreach. This will give you a maximum target for planning purposes. But for AP you should really start your planning with the mount. However, your budget must guide your purchases. 1.25" 6.3mm 32mm 40mm Plossl eyepiece set give you a good variation in magnification for a wide range of targets with extra sharpness and long eye relief. I often recommend a 32 mm Plossl as a good low power wide view eyepiece for scopes with a 1.25 focuser. These eyepiecesproduce a 'standard apparent feld of view' of between 50 and 56 with most set at around 52. However the package includes a 1.25 to 2 adapter so if you have a 2 focuser you can treat this like a 2 eyepiece leaving the adapter normally included with the scope for use with other 1.25 eyepieces. Plossl eyepieces are perfect for astronomical viewing because the field of view is wider. As said, they are cheap to compare. Despite the narrow field of view and short eye relief, it showed shockingly good views of Saturn, Jupiter, and even the Moon. Unless you are a professional astronomer or extremely demanding, you can select your eyepieces based on magnification, the apparent field of view, eye relief, and price. Another useful aspect of a wider field of view is that, assuming the entire eyepiece is sharp enough to show good images right to the edge, you dont have to nudge the telescope to track the rotation of the Earth as often with a Plossl (50 degrees) compared to a Kellner (40 degrees). My Baader Hyperion Zoom is my most used and favorite eyepiece. Elena is a Canadian journalist and researcher. There is no shortage of accessories for the Nexstar series. Also, note that the pricing is based on 1.25 eyepieces. Plossls are extremely versatile and can be used for all use cases. Is it just about finding and framing, or do wide fov EPs create a more immersive experience? Thanks in advance I really appreciate it! 8.8 = 240 = .34 32 mm = 18.75X12 mm = 50X8 mm = 75X6 mm = 100X4 mm = 150X3 mm = 200X. However, i can read very well without my glasses with almost microscopic vision and can use my binoculars without glasses. Being a total novice, I love the StarSense app and technology. In this case, I am going to define this by the focuser and eyepiece size. 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. They include links to them where they can be ordered. And remember, when all else fails, read the instructions. I do not miss beating my eyelashes against a 9.7mm Meade Plossl that I used to own. Any 1.25 eyepiece will work with the BH Zoom 2 adapter. I would recommend the Orion Q70 series over that. Good 32mm Plssls run around $30-$40. Yes, Plossl eyepieces are some of the most popular with amateurs and professionals alike. For shorter focal lengths, the StarGuider BST series eyepieces have greater eye-relief, so are better suited. On the inside, they are exactly the same design. Again, I only do this for my low power wide views. This wider field of view will make it easier to find your targets, allow you to view larger deep-sky objects, and provide a more immersive experience for everything that you view. The difference in TFOV will be significant at this focal length. Lower power almost always looks better than higher power. Personally I think they're still worth it. Are plossl eyepieces still worth it? These tend to run toward the more expensive price range. Lets just say that once you get below F5, it is really hard for the eyepiece to deliver a clean image to the edge. The quality of a Plossl eyepiece completely depends on the brand and model, so be very careful in our selection. 6mm Kellner eyepiece that I enjoyed a lot. Are Plossl eyepieces good? They have a pop-up eye guard and they are threaded to accept filters. So your 600 mm example (f/6) becomes, in effect, an 1800 mm focal length, f/18 but it does not change the focal length of the eyepiece. A decent barlow might cost as much or even more. It comes with 1.25 Plossls 25mm (26x) and 10mm (66x) eyepieces. These are effectively simple designs like Plossls, Kellners, Konigs, and RKEs, with long focal lengths, that have a lens included to increase their focal length. The components of a Plossl eyepiece are the two groups of lenses. Not only is it good to share the experience but you can get first-hand advice on things like diagonals and may even be able to try one in your scope to see if it makes a difference. At least you'll have one budget eyepiece that will give you a larger part of the sky at low magnification. the reality is that today's eyepieces are all quite good, particulalarly in an f/10 telescope. I beleive this is the same as they ones you asked about. This means less time trying to figure out which way your images should be oriented before examining them. Many compare these favorably to eyepieces that are much higher priced. I really like the simplicity and compactness of these simpler designs (ie: Plssls, Orthos, Kellners, etc). 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. 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. Now looking for a couple of decent eyepieces. You can buy eyepieces specifically focused on a particular scope or you can buy eyepieces that you expect to use with this and all future scopes. Optics manufacturers began selling and popularizing Plossl eyepieces, albeit with a generally simplified design where each achromatic doublet had the same focal length. The Plossl was also called a Kellner Type III in some earlier references; in the 1950's, Edmund Scientific sold a "Kellner" eyepiece made from war surplus lenses, but it actually consisted of two achromats in the classic Plossl configuration. Omni 12mm Eyepiece - 1.25" Learn More. Our previous exchange convinced me to start out with an 80mm refractor. Perhaps you should seek out help from your local astronomy club. Poorly chosen eyepiece might give you poor experience and sometimes even make stargazing difficult. 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. Field of view, is about finding, framing, drift time, and context. 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. For visual use, 1.5X, 2X, 2.5X, and 3X Barlow lenses are common. Note that as we get into the higher magnifications, the millimeter jumps between eyepiece focal lengths gets smaller. Heres the short answer Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. Now we just divide it up and fill in some sample focal lengths. But you need to know, first, if you will be wearing glasses when you observe. The longer FL Plossls (>15mm) have some distinct advantages over more complex designs without the major disadvantage of Plossls which is short ER. Other eyepieces of more advanced design can have better eye relief and field of view. You can build a full set of these with good results, but be aware of eye relief, especially if you wear glasses. Plossl eyepieces are great. Plossl eyepieces have wider fields of view than Kellners. None of my fancy EPs have enough contrast for this application. I often recommend it. If you read the article you know how to calculate the magnification and field of view. no caps come in bolt case. Explore Scientific, like many eyepiece providers, have higher-priced and budget lines. 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. 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. Plossl eyepieces are often included in better telescope packages as the starter eyepieces. Gosky Plossl 40 mm Telescope Eyepiece - 1.25inch This is probably the worst eyepiece I can recommend. or a Baader Classic Ortho 18mm with both a 1.5/2x Barlow and 3x Barlow. You might be able to find a Kellner, or perhaps a high-quality Orthoscopic. A wide range of focal lengths are available, all in 1.25-inch size. 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. 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. There is the 56mm Meade Plossl which magically turns my short FL refractors into their own finder scopes. If you do not have your Hyperions yet I recommend you wait until you have these and try them out before you buy the Plossls. Does this sound like something you would recommend based on the telescope I have? Lets illustrate with an example using a 1200 mm FL telescope. Edited April 23, 2010 by russ teh_orph Members 28 198 Author If your focuser/diagonal only accepts 1.25 eyepieces, I would recommend you use a 32mm as your longest focal length, lowest power eyepiece. One of the TMB Planetary eyepieces are extremely nice for 50. Your email address will not be published. The atmosphere is typically the limiting factor as we get to higher magnifications. 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. It was named after Peter Barlow who invented it in the 1800s, so it is usually capitalized. 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. You can use the same eyepiece on planets and deep-sky objects (DSOs). But are they really? Plossl eyepieces are often included in better telescope packages as the starter eyepieces. i did buy an astro-tech 3.2 paradigm ed from a cloudynights.com forum member. 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 . Below 20 however, the eye relief makes it difficult for me and my glasses so Ive been replacing my 5-15 EPs with 82 degree EPs with more relief. As I discussed earlier, the zoom lets you explore your target over a wide range of magnifications without having to change eyepieces. To get the best performance, you have to be willing to pay the price. We can see that 2 eyepieces have an advantage over 1.25 eyepieces when designers are making wide-view eyepieces. Jupiter and Saturn are low in the sky now. You probably dont need to worry about upgrading them as soon as you get your telescope, unless you can see an optical problem in the one youre using or you find the short eye relief for the short-focus eyepiece uncomfortable. 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: Explore Scientific recently extended this offering by adding a series of 82 degree eyepieces labeled LER, or Long Eye Relief. 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. Once we are done, they will make sense. Note that the Explore Scientific 68 and 82 degree eyepieces are also available in 2 size for your low power wide view requirements. I owned an XT8 Intelliscope which is the same optical tube on a PushTo mount. Plossl eyepieces have a wider field of view that can go from 50 to 56 degrees. There are so many others at comparable or higher prices, many of which are quite good and some rather poor.
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