are plossl eyepieces good

Do I need an adapter if my scope has a Plossl lens? Optics manufacturers began selling and popularizing Plossl eyepieces, albeit with a generally simplified design where each achromatic doublet had the same focal length. One last thing, as a kid I used my telescope to watch squirrels and birds (which was interesting because the image was flipped around :-) so, you might consider getting an eyepiece that flips things the right way around so that navigating terrestrial nature is easier to manage. Many brands of eyepieces are available, including SVBony UltraWide, Astromania UltraWide Angle, Agena Astro StarGuider Enhanced UltraWide Angle and others. The BHZ in a 2X Barlow will take an XT8 to 300X. Divide that by the magnification of that eyepiece in that scope. Typically a Barlow does not add or subtract from this, but there again we have bad Barlows and Good Barlows. 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. 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: In that respect, they are similar to the Explore Scientific 82 degree mentioned earlier. This will give you a maximum target for planning purposes. Poorly chosen eyepiece might give you poor experience and sometimes even make stargazing difficult. You can build a full set of these with good results, but be aware of eye relief, especially if you wear glasses. Plssl eyepieces are good all-around performers, producing sharp images at the center of the field, but they have only four lens elements. This is why many telescopes come standard with at least one Plossl eyepiece. Imagine you are looking at the moon with each of these eyepieces and consider what you would see. Theres a reason Plossls are usually kept at 52 degrees. Worth is a subjective evaluation, so here is my subjective input: 1. This will become more apparent the wider the AFOV is of the eyepiece, in my experience. This can be very helpful for star hopping. Even big telescopes are subject to limitations imposed by the atmosphere. Since each eye has a different focal point, I suspect pulling the eyepiece out until reaching focus and then tightening the set screw. But the conventional way of expressing it is in terms of eyepiece focal lengths. Differences and Similarities. 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! Any exit pupil between 7 mm and .5 mm is just fine. You are asking about a very specific eyepiece in a very specific scope combined sometimes with a Barlow. . The third choice of eyepieces is the Orion 12 mm Sirius Super Wide Angle Correct Image Eyepiece. 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. My other eyepieces, ES and Meade 82 degree, stayed in the eyepiece case most of the time. You alluded to them, but you never mentioned Tele Vue. Both will provide the same magnification. They have good center sharpness but exhibit some field curvature and astigmatism. Its quite long but that is what we are aiming for and hopefully, it was useful to you. I currently own a Mak127 ( that can't use 2"eyepieces) and a 80ED ( that one can hold 2"eyepieces). If you wear glasses when observing, you probably want 15mm or more of eye relief, which the 20mm Plssl provides, but the shorter fl ones dont. Super Plossl eyepieces are generally a little smaller than this at around 16-20 mm in size, which is why theyre sometimes referred to as wide-angle or low power plossls. These tend to run toward the more expensive price range. What Is A Barlow Lens For A Telescope? A Plssl is probably as good as any 32mm eyepiece in a 1.25 inch focuser. (often referred to as Pseudo Masuyama). You mentioned regarding ORTHO eyepieces: Excellent specialty eyepieces, usually for planets. Save my name, email, and website in this browser for the next time I comment. They have a narrow AFOV but have a reputation for being very sharp.. It also produces an erect image, meaning you see what youre viewing rather than seeing everything upside down or sideways as some types do. These will normally be higher priced and may be outside the price range we show here. It allows each eyepiece to provide two magnifications. They deliver sharp images in almost all telescopes. Ive added comments on where you may find and use them. Recall that your lowestpower eyepiece's exit pupil should not exceed 6mm. I often had to drop back to about 180X because of poor seeing and transparency. You can accomplish a longer eye relief by barlowing a longer f/l plossl, so that is something to think about as well. I do not miss beating my eyelashes against a 9.7mm Meade Plossl that I used to own. Etc.? 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. Meanwhile, Plossl eyepieces are much more common and easy to find. You could say Super Plossls are not much more than a marketing tactic these days. In my scopes a simple zoom eyepiece like the Celestron 24-8mm or the Baader has replaced the higher powered plossls. Plossls are extremely versatile and can be used for all use cases. With a 130mm-F5 I would use a Plossl 32mm for its low-mag-wide-view. I think you will change your mind. https://telescopicwatch.com/orion-skyquest-xt8-intelliscope-review/. Again, I only do this for my low power wide views. 130 mm scope will have a max of 260X for planning purposes. Most modern telescopes use a focuser, or diagonal, that accepts 1.25 eyepieces. If I had to give them all up and keep only one eyepiece, It would be the BH Zoom. No, adapters are not needed but they may come in handy when you want to change the focal length or add other lenses such as filters or Barlow lenses. I did sell them all when I adopted Dioptrx, and the Naglers are amazing! In my opinion, you do not. Can you give me any specific recommendations on what to buy and from where? Thanks for your comment. 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. It also was considerably more expensive. It is pretty much worth it for everyone that has a telescope with a 1.25 inch focuser to have a 32mm Plssl. 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. 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. short answer: yes. Omni 9mm Eyepiece - 1.25" Learn More. These lenses are connected together. Great article on eyepieces but I am still undecided exactly what eyepiece & Barlow to buy and from where since some buying sites dont provide all the info you cite in your article. 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. 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. philhas Members 61 459 Location: North East England 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. An exit pupil larger than 6 mm may start to show a shadow of the secondary mirror. If that is the case, it will give me another reasonably good, inexpensive zoom to recommend to beginners. Plossl telescope eyepieces are the most popular type of eyepiece on the market. Focal length telescope / focal length eyepiece = magnification or power. They can also be found as Orion Expanse sporting a blue line rather than gold. . In this article, we will only focus on the differences between Plossl and Kellner eyepieces. She has been looking at the sky for years and hopes to introduce more people to the wonderful hobby that is astronomy. https://telescopicwatch.com/best-telescope-mounts-for-astrophotography/, Then you look at the optical tubes. (Focal ratio is a term that refers to the telescopes focal length divided by its aperture. About Us | Privacy Policy | ContactLittle Astronomy 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 advertising and linking to Amazon.com. I must say Im quite confused about eyepieces. Being a total novice, I love the StarSense app and technology. I really like the simplicity and compactness of these simpler designs (ie: Plssls, Orthos, Kellners, etc). 2. Explore Scientific, like many eyepiece providers, have higher-priced and budget lines. I have a variety of eyepieces, including Explore Scientific and Meade 82 degree series so I have choices. We have a range of 32 mm to 3 mm. I need your advice on it. A wide-angle view of 66 degrees makes it perfect for viewing large objects and even entire constellations while still being able to focus on smaller details with ease. What Does It Do. You are talking about the technical details of how a Barlow works, and I agree. Not all are Plossls, but excellent eps at f/10. However, because they have more glass elements than other designs, like Kellners, their manufacturing becomes extremely important to get high-quality optics. But these are only intended to get you started. Even if we were next-door neighbors this would take weeks of discussion and planning. Plossls tend to come with large, ground-standing Dobsonians, whereas youre more likely to find a Kellner sold with a tabletop Dobsonian. 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. Heres the short answer Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. If you want a very good eyepiece with a bit wider field of view but are on a budget, these are very good choices. In the beginning, you are not going to know what the atmospheric conditions might be in your area. None of my fancy EPs have enough contrast for this application. Do you need a 10 mm planetary and a 10 mm DSO eyepiece? I couldnt find any suggestions on your site about diagonal recommendations. NEW. In comparison, Aspherical lenses generally have no color distortion but might not work out well if the telescope user needs really high magnification. 32mm (20x & 40x). My understanding of eyepieces was very limited until I read this article, you explain things in a clear and understandable way which made my understanding so much clearer. So yeah, they are good.. and some are even better than others, and more collectible. With regards to budget, whatever works well and is on par with the quality & capability of the telescope. The BHZ 2 Adapter has threads on it so you can attach filters to it allowing you to use 2 filters with the zoom. Super Plossls offer a smaller field of view, which makes them good for close-up views and examining small objects. Despite this, I also have some Plossls which are indispensable. 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. These are the best in optical performance and build quality. To achieve a maximum of 200X (2X the aperture of 100 mm), we solve for the focal length. 6.7 = 268 = .3 The ES 82s are my favorite eyepieces, especially in the 1.25 format. I dont know if they make anything like this anymore, but as a kid, I had plastic slides with images on them (the Milky Way, Horse Head Nebula, etc.) Or, if you are buying from an online like Amazon, then look at the eyepieces I recommend and see if any suit your needs. Aspheric and Plossl Plossl are both lens designs that can be used in most telescopes. 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. That's hard to beat IMO. Combining a cheap eyepiece with a cheap barlow isn't a elegant solution. 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. Like going from a 32 TV to a 65? We will now discuss the specifications of eye relief and apparent field of view. Again, this is more noticeable in lower focal ratio scopes. I am a BIG fan of zoom eyepieces, especially if you dont have many. I recently purchased the SVBony 7-21 zoom from Amazon. This might contain more of what you need. They provide a range of magnifications with one eyepiece. 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. But some people demand the very best, and it is available, at a price. For shorter focal lengths, the StarGuider BST series eyepieces have greater eye-relief, so are better suited. Well-made lenses are expensive though, so in general the more lenses, the higher the price of the eyepiece. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. The one exception I would keep in mind would be when working with Newtonian reflector telescopes below F5. One of the TMB Planetary eyepieces are extremely nice for 50. My Baader Hyperion Zoom is my most used and favorite eyepiece. Many compare these favorably to eyepieces that are much higher priced. Kellners tend to have narrower apparent fields of view (40 degrees rather than 50 or 52 degrees in a Plossl), and in short focal length telescopes (focal ratio f/5 or shorter) they can have more false color fringing, but for the most part it is hard to notice the difference between a well-made Kellner and a well-made Plossl in terms of image quality. How do you focus - I would have expected helical focusers in the eyepiece holders but don't see any? Type above and press Enter to search. OHHH, now i get it! I have personally tested a few Super Plossl and compared them to their regular counterparts by the same brand. Typically, these will be 25 mm and 10 mm or something close to that. 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. These low-quality Plossls lack an internally blackened lens barrel with thread baffles and blackened lens edges and sophisticated anti-reflection multi-coatings, all of which are a necessity to produce an excellent image. However, I have eyepieces that have larger exit pupils than 7 mm and they work well. Plossl eyepieces are perfect for astronomical viewing because the field of view is wider. i dont have 1 of everything, and i bought the best i could afford on a low budget; meade and orion. A Barlow lens is an optical device that goes between the eyepiece and the focuser. https://telescopicwatch.com/celestron-8-24mm-zoom-eyepiece-review/. However, if you want to optimize your viewing experience, youll need to invest in a better-quality eyepiece. 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. They have a 50-56 degrees field of view, better eye relief, and cost more than Kellners. Most people will be fairly comfortable with eye relief of 12 mm or higher. Higher values are slower and lower values are fasterthis is a holdover from camera lens terminology and has to do with exposure times.). (Svbonys Plossls, for example, are optically identical to Orions Sirius Plossls). These are matters of individual preference and budget. A Barlow lens will not reduce the CA in a low FR achromat refractor so to speak of it changing the focal ratio would, I think, introduce confusion in most situations. While I also have the Baader Hyperion Zoom, mentioned later, I continue to make use of the Celestron, especially in my smaller scopes. With a 8" dobsonian, a 6mm is very versatile. 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. Through the 32mm eyepiece, objects will look larger, and though they may have a lower surface brightness, the surface brightness of the background sky will also be lower. Once I knew how much I liked the zoom I upgraded to the Baader Hyperion Zoom. This also makes them more resistant to any form of dust getting inside the eyepiece. 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. Their 50 to 52 degree AFOV is wide enough for general observing. A 10mm or shorter Plssl is probably not worth it unless you want to see how you personally cope with short eye relief. The 50 apparent field of view is plenty for me. I saw Jupiter today and its 4 moons but when I looked at saturn I struggled to get a really clear image and it was very small. The Hyperions work well in SCTs and you can't beat that large eyelens and eye relief ,JMO. Because the eyepiece was still similar enough to a Plossl and still kept the symmetrical design, they called it Super Plossl. But you need to know, first, if you will be wearing glasses when you observe. Eyepiece Field of View Simulator astronomy.tools Field of View Simulator Change Telescope Reset Change Target Add Equipment Hello sir, thanks for your article its realy helpful. Nothing will stop you from trying to go higher, but in all likelihood, the image will be poor and not worth the cost of eyepieces to achieve it. It was grueling, because I couldnt even get the entire field of viewI had to keep my eye hovering above the exit pupil. Such eyepieces are able to offer great performance, i.e., satisfactory degrees of deviations, to about a 50.degree field. 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. 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. dnrmilspec is right. Elena is a Canadian journalist and researcher. Omni 56mm Eyepiece - 2" Learn More. 8.5-ish mm (75x & 150x) For what it's worth: I believe the Omni 1.25 inch 2x Barlow is one of the Shorty Barlows manufactured by GSO. My most used eyepiece is an 8-24 mm zoom. It costs three to four times as much as the Celestron Zoom, but if you have the budget, this is the one to get. The only one not in the article is the Orion Q70 which is available in 38 mm, 32 mm and 26 mm. But what are the differences between these two and how do you know which one to choose? For planetary viewing, comfort is essential in helping to increase viewing time . Omni 12mm Eyepiece - 1.25" Learn More. 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. 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. It is as simple as that. It's no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. Achromatic vs Apochromatic refracting telescopes. Offering a wide 43 apparent field of view, this 40mm Orion Sirius Plossl Telescope Eyepiece provides extremely sharp images of impressively high contrast. Well, I'll just say it. Remember that visual and AP have very different requirements, so plan on at least two different optical tubes. When a beginner is choosing eyepieces on a budget, there are a number of possible designs they may choose between. Its made up of four lenses in two groups. 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. I am not aware of an ES branded 70 degree series in the USA, but they do have a Bresser branded 70-degree series. This can be debated 100 ways, but that is my advice. 2019-2023 Little Astronomy. After these, we have mostly proprietary designs from various eyepiece companies. Every new skill takes time. However, your budget must guide your purchases. Thus the 30 mm eyepiece in a 600 mm telescope produces 600/30 = 20X magnification while with the Barlow, we have 1800/30 = 60X. If the above guide has helped you understand the terms and workings of eyepieces, scroll up and make a selection from our recommendation list. 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. If we combine a Barlow with an 8-24 mm zoom eyepiece, we have an amazing range. I tested out my BH zoom yesterday for the first time and it is a great eyepiece so thank you for the recommendation! They are referring to how much or how little distortion is visible as you look from the center of the image out toward the edge. Most telescopes come with one or two eyepieces, which gives you one or two magnification options. 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. very happy. A four-element eyepiece was made by putting together two achromatic doublets with different focal lengths. A 32mm plossl eyepiece and a 2x barlow lens should be enough to give you a good range of eyepieces for every use case. Orion Sirius Plossl 1.25" eyepieces are ideal for all types of telescopes: reflector, refractor, and catadioptrics such as Maksutov-Cassegrains. I have just one Meade product currently and that is a series 4000 1.25 inch UHC type filter which I use for outreach. (Compare, for instance, 20mm of each type, or 10mm of each type.) Be sure to read the following as you consider your eyepiece purchases. Thanks all. Look those up, seeing and transparency in the context of astronomy. 50 150X, no Barlow Looking forward to first use. You can use the same eyepiece on planets and deep-sky objects (DSOs). But what are the other differences? The three-lens eyepiece that came out of this was much better at controlling false color fringing and other distortions, even in telescopes with short focal lengths. 32 mm = 18.75X12 mm = 50X8 mm = 75X6 mm = 100X4 mm = 150X3 mm = 200X. The Hexagon Zoom Eyepiece is made from durable plastic material that resists scratching and it has an eye relief distance of 15mm. So, even if you have a Maksutov-Cassegrain scope, you should get a good experience from this eyepiece. Their eye relief is limited to about 70-80% of their focal length. If you are a glasses wearer and plan to keep your glasses on while you are observing, then you will likely want eyepieces with at least 17 mm of eye relief, and some glasses wearers prefer at least 20 mm. I do not miss beating my eyelashes against a 9.7mm Meade Plossl that I used to own. Inexpensive Plossls that are manufactured using low-quality lenses are susceptible to internal reflections when viewing bright objects at high magnification. still, i somehow managed to avoid the eyepiece pitfalls when buying used off ebay. 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. Generally, Plssl eyepieces are best suited to Newtonian and fast telescopes. As we go along, I will refer back to these, so dont worry if you cant answer the questions or understand the formulas now. Goldline series of eyepieces provides the best value in this price range, better than Plossls. The 5-lens-element pseudo-Masuyamas that telesonic mentioned are/were fine eyepieces. Plossl eyepieces are great. 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. I usually recommend a 32 mm Plossl type eyepiece as that provides about the widest view you can achieve with a 1.25 focuser. These have the advantage that the front section with the optics can be unthreaded and threaded on to the filter threads of a 1.25 inch eyepiece. This means less time trying to figure out which way your images should be oriented before examining them. That is a wonderful expression. 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. A Televue Plssl may be better than a generic one, but the difference is probably not worth the additional cost. For the price, I think the eyepiece is still a good pick. 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. And that is pretty much what Super Plossl are today. It uses two symmetrical pairs of glass elements (one convex and one concave) to pass the light. These come in focal lengths from 2.3 mm to 25 mm. In the next section, we will talk about the AFOV of an eyepiece. - 32mm plossl. These are highly sought after ep's, and hold their value well. The atmosphere is typically the limiting factor as we get to higher magnifications.

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