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. 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. Learn more about our story and the team behind the scene. Being a total novice, I love the StarSense app and technology. When you use a Barlow lens with an eyepiece, you get the magnification, but the eye relief is not affected. Better edge correction with a short-focus telescope is one of the things you pay extra money for, and sophisticated eyepiece designs have as many as eight elements. They have decent eye relief and little curvature of field. Heres the short answer Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. I have a 4 element (traditional) and a 5 element 32mm Meade, both from the same era in Japan, and the 5 element is much better by quite a bit. While it covers the same range as the Celestron zoom, it offers better optics, better mechanical operation, and a wider field of view. Free shipping for many products! They have good center sharpness but exhibit some field curvature and astigmatism. But are they really? Plossl eyepieces are great. But you need to know, first, if you will be wearing glasses when you observe. What Is A Plossl Eyepiece?(Thoroughly Explained!) - Scope The Galaxy Their 50 to 52 degree AFOV is wide enough for general observing. A super Plossl eyepiece is a top-performing eyepiece that can be used for a variety of tasks, from viewing objects in the distance to looking at microscopic things. Field of view, is about finding, framing, drift time, and context. https://telescopicwatch.com/best-barlow-lens-and-how-to/, Celestron 8-24 Zoom Review I think some of these kits even include 4mm eyepieces, and thats ridiculous! Celestron 2026 Erecting Prism Barlow Lens Set is another great choice for those looking to get a variety of magnifications. Read our full affiliate disclosure here. Tele Vue offers several series with apparent fields of view from 50 degrees to 120 degrees. As we go up in price range, we gain capabilities that may not be immediately obvious. . 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. The eye relief is the distance between your eyes and the eyepiece where you are able to view the whole image comfortably. These eyepieces are technically called Symmetrics, since Plossls can have different focal lengths for each doublet, but they are always marketed as Plossl. A couple of them felt fancier, but the jump in performance was either insignificant or non-existent. You are asking about a very specific eyepiece in a very specific scope combined sometimes with a Barlow. They have a 50-56 degrees field of view, better eye relief, and cost more than Kellners. Im just starting out with astronomy and this really helped my understanding. As you saw in the article, they eyepieces that would be best for you, or your child, is based on your budget and what your goals are. I really like the simplicity and compactness of these simpler designs (ie: Plssls, Orthos, Kellners, etc). Many brands of eyepieces are available, including SVBony UltraWide, Astromania UltraWide Angle, Agena Astro StarGuider Enhanced UltraWide Angle and others. There are inexpensive adapters that will let you use standard 1.25 eyepieces in a .965 focuser/diagonal. In that respect, they are similar to the Explore Scientific 82 degree mentioned earlier. It costs three to four times as much as the Celestron Zoom, but if you have the budget, this is the one to get. It comes with two Barlow lenses, one Newtonian eyepiece, and three Plossl eyepieces in the set. If we look at the range I provided above, we see that we could replace several eyepieces with one zoom. Meanwhile, Plossl eyepieces are much more common and easy to find. Was $38.99 - $99.99 Now $31.19 - $84.99 Compare Orion Edge-On Planetary 1.25" Eyepieces By default, expect a 40-degree field of view in a Kellner and a 50-52 degree field of view in a Plossl. Eyepiece Field of View Simulator astronomy.tools Field of View Simulator Change Telescope Reset Change Target Add Equipment https://telescopicwatch.com/best-astrophotography-telescopes/. Its quite long but that is what we are aiming for and hopefully, it was useful to you. Youll find yourself adjusting these type of factors less than. 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. Amazon.com : SVBONY SV137 Barlow Lens 1.25 Inch 2X Barlow Lens Metal TeleVue Naglers, Plossl and Powermates | Astromart Sometimes you want to see a wider field of view to locate an astronomical object like a nebula by using nearby stars. Choosing the most appropriate can completely change your experience in using telescopes. In the beginning, you are not going to know what the atmospheric conditions might be in your area. There is a little bit more to it than that and there are other design . Planetary eyepieces: Ploessl or Orthoscopic and which brand Every new skill takes time. Another way to look at it is that a 30 mm eyepiece in a 3X Barlow works like a 10 mm eyepiece. You can build a full set of these with good results, but be aware of eye relief, especially if you wear glasses. This is where the second formula comes into play. Then you can judge for yourself if it is worth it. Sorry but I am not offering a configuration and pricing service. Age is not part of the equation. Over time, you may wish to add a specialty eyepiece here or there, but I would not make that a priority until you have filled out your magnification range. I once had to use a 6mm Plossl to attempt to perform a star-test collimation for a telescope at the observatory. All are good eyepieces and diagonals, and would be excellent for star party use. There are so many others at comparable or higher prices, many of which are quite good and some rather poor. Suggesting an F6 scope becomes an F18 would also imply things like reduced CA in a refractor. Again thank you very much for all the information in the page, excellent notes. In the case of the Celestron, you get all the focal lengths from 24 to 8mm in one eyepiece that costs $100. https://telescopicwatch.com/orion-skyquest-xt8-intelliscope-review/. Higher values are slower and lower values are fasterthis is a holdover from camera lens terminology and has to do with exposure times.). This type of design also helps provide for eye relief; its a better experience if your eyes. Videos for related products. I owned an XT8 Intelliscope which is the same optical tube on a PushTo mount. I would suggest you also get a 2 low power wide view. And you don't even have to get the full set if you don't want to. For example, if you put a 30 mm eyepiece in a 3X Barlow, it will triple the magnification you get from that eyepiece. Note that the full moon appears to be approximately .5 degrees across, so use that as a mental reference when looking at the numbers. In your case, I would do this for the 30 and the 20. A rubber safety cap protects the lens when not in use while also providing additional grip on this 35 mm Plossl eyepiece. When I started, I purchased less expensive eyepieces to learn about them and how I would use them. The tradeoff was that each lens surface added another internal reflection, reducing contrast and adding glare. Orion Sirius Plossl 1.25" Telescope Eyepieces But, at least get the 32mm Plssl. (Compare, for instance, 20mm of each type, or 10mm of each type.) 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. At least you'll have one budget eyepiece that will give you a larger part of the sky at low magnification. They deliver sharp images in almost all telescopes. They have a 60deg apparent field, long eye relief, adjustable eye shield and extremely well corrected. Plossl eyepieces are perfect for astronomical viewing because the field of view is wider. What happens if you use an eyepiece that has a the wrong exit pupil? People may have heard, and rightly so, that Huygens or Ramsdens are crummy eyepieces and that they should get a Plossl instead, and they may believe the same applies to Kellners, but the truth is that Kellners are often good eyepieces. I recommend it often to beginners on a tight budget. Both will provide the same magnification. Plossl telescope eyepieces are the most popular type of eyepiece on the market. Gosky 1.25inch Plossl Telescope Eyepiece - Amazon.com Each eyepiece gives you a unique magnification based on the formula listed at the start: Why do you need more than two eyepieces? Correct image diagonals are easier for beginners and they are great for using the scope during the day, but experience people dont use them for astronomy. Of course, the entire eyepiece must be manufactured and finished correctly to realize the design's full potential. 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. 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. SVBONY Eyepiece Review: Take Your Stargazing Up a Notch 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. Explore Scientific, like many eyepiece providers, have higher-priced and budget lines. This SVBONY eyepiece review should get you up to speed with the budget stargazing options. Or we say that F10 would be easier or less demanding on the eyepiece than the F5. . It may be a bit less than that in reality but for practical purposes that is close enough. The Baader offers wider fov, but at quite the price premium. Nice, thank you again for the additional inputs. The quality of a Plossl eyepiece completely depends on the brand and model, so be very careful in our selection. But what are the other differences? A key thing to remember is that eyepieces are universal. This is important to keep in mind because it means brands have to try really hard to one-up each other because the competition in a niche hobby such as astronomy can be fierce. 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. It sounds cool, they must be better than regular Plossls with that name, right? Then set your maximum based on your aperture and split it up. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. Despite this, I also have some Plossls which are indispensable. Ive read reviews about my scope. The Celestron Omni Plossl eyepiece range offers a nice entry-level range into the higher quality 4-element Plossl design. Hi Ed, Your eyepieces do not need to be the same brand as your telescope. The larger barrel allows them to create an eyepiece with a higher AFOV. 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. I have seen some gatekeeping in this hobby about Kellners, and Im not sure I understand it. i didnt have all this simply-put information when i bought my orion st-80 as my christmas present to myself in 2020. i started out with several pair of binoculars i bought used off ebay, then bought the scope. I continue to be very pleased with the ES82 eyepieces. If you read the article you know how to calculate the magnification and field of view. Plossl eyepieces have an eye relief equal to about 80% of their focal length. Lets give an example. I have to say that your questions are answered in the article. And new proprietary designs come out from time to time. The "sharpness" you are seeing may well be better explained by the focal length of the ep than the quality of Plossls in general. This general purpose design gives good colour correction and an adequate feld of view at reasonable cost and they are often bundled with new telescopes. You have selected a very good starting telescope that will serve you for many years to come. Stargazing Help is a participant in Amazon Associates program. This series of eyepieces may provide better value in this price range. Again, does it create a more immersive viewing experience? Pay attention to the eye relief, especially if you will be observing with glasses. This makes them a bit more complex and expensive than other designs, but also gives them a wider field of view, reasonable eye relief, and reduces optic aberrations. Orion Q70 38 mm works well. You can still get eyepieces, but there are few choices. Kellner eyepieces have 3 lenses cemented together and have a 35-50 degree field of view. Orion Sirius Plossl 1.25" eyepieces are ideal for all types of telescopes: reflector, refractor, and catadioptrics such as Maksutov-Cassegrains. Telescope Eyepieces | Orion Telescopes: Shop We will now discuss the specifications of eye relief and apparent field of view. Is there much of a difference between the celestron and haader? Now looking for a couple of decent eyepieces. Best suited for telescopes with f-ratios f6 or slower. Worth is a subjective evaluation, so here is my subjective input: 1. Omni 32mm Eyepiece - 1.25" Learn More. I am very near-sighted, barely see the big E on the vision chart without glasses. No surprise there. This was very useful, I got a meade infinity 90mm ( after read the review here -. It had one of the best fields, edge to edge, in my SCT that I've ever seen. The Hyperions work well in SCTs and you can't beat that large eyelens and eye relief ,JMO. Your email address will not be published. These sport a 60-degree apparent field of view, about a 20% wider apparent field of view than Plossl eyepieces. And of course, NEVER look through a telescope pointed at the sun that does not have a safe solar filter covering the front. Here's the short answer - Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. Imagine you are looking at the moon with each of these eyepieces and consider what you would see. https://telescopicwatch.com/best-telescope-mounts-for-astrophotography/, Then you look at the optical tubes. If you do choose to go with a Plossl eyepiece, I highly recommend spending some extra cash to get yourself a decent good quality branded Plossl eyepiece rather than going for a cheap, generic eyepiece which is a Plossl only for the namesake. Today, most beginner telescopes of any quality are sold with either Kellner or Plossl eyepieces. Now we just divide it up and fill in some sample focal lengths. We are a team of active amateur astronomers, here to help you with all your astronomy and science related needs this is anything, from reviewing the latest telescopes to be released to talking about gravity and neurons. 3. These are exceptional eyepieces, and only available on the used market nowadays. They work great every day and get you where you want to go, but dont have what the higher priced models have. Pentax K-70 Astrophotography: The Ultimate Camera on a Budget! That can only be shown through actual testing. 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? We have a range of 32 mm to 3 mm. Tele Vue has eyepieces that approach $1000. In my opinion, there are no wrong exit pupils. 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. And, the quality of the eyepiece clearly comes into play here. I dont have a specific diagonal to recommend and I am not aware of any specific issues with the one that is included with the scope. But dont fear that you will waste your investment as eyepieces are standard sizes. Do you have any additional comments to help me? 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). At this point, a Plossl and a Kellner are so close in price and performance that you may as well get the Plossl. That is why I suggest, if you can use 2 eyepieces, you will want one or two low power wide view 2 eyepieces. Are there any good low-cost 2 EPS out there? 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. Glad you found it helpful. A 15mm Plssl might be worth it, if you dont wear glasses. Are Plossl eyepieces any good? - KnowledgeBurrow.com You will see these under many brands, including Orion, Celestron, GSO, and others. To achieve these benefits, they may use special glass and more costly manufacturing. I do not miss beating my eyelashes against a 9.7mm Meade Plossl that I used to own. High-quality Plssl eyepieces provide high contrast and sharpness across the entire field of view. Focus on the magnifications rather than the mm of the eyepieces. These lenses are connected together. There is no shortage of accessories for the Nexstar series. i did buy an astro-tech 3.2 paradigm ed from a cloudynights.com forum member. I have seen elsewhere discussions about the exit pupil of eyepieces. Optics manufacturers began selling and popularizing Plossl eyepieces, albeit with a generally simplified design where each achromatic doublet had the same focal length. From planetary viewing to deep sky watching. Besides fov, How would you compare the optical quality of the Celestron to the Baader? Outstanding job Jack. 6mm Kellner eyepiece that I enjoyed a lot. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. 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. 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. There are certainly much better options out there but at a significant cost. It uses two symmetrical pairs of glass elements (one convex and one concave) to pass the light. Why two sizes? Excellent, thank you for the breakdown, very much appreciated. I dont think so. It's no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. 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. They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. Many compare these favorably to eyepieces that are much higher priced. They are 82-degree AFOV eyepieces. Something in the 30 to 38 mm range with a 65 to 70 degree AFOV. Can You See The ISS With A Telescope? 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. You might be able to find a Kellner, or perhaps a high-quality Orthoscopic. I often recommend the 2 in this series as excellent low-power wide view eyepieces, especially in scopes at focal ratios below F8. Plossls tend to come with large, ground-standing Dobsonians, whereas youre more likely to find a Kellner sold with a tabletop Dobsonian. A 6mm Plossl has a tiny eye lens. Save my name, email, and website in this browser for the next time I comment. This 10 mm Orion Sirius Plossl Eyepiece is a great, moderately high power ocular for observing small planetary nebulas and globular star clusters, as well as for planetary probing when seeing conditions don't permit higher magnifications. All focal lengths offer 50 field-of-view except the 40mm which offers 42 OHHH, now i get it! LCAS - The Good Old Plossl Eyepiece You can do the calculation which will show that the 70 will have a significantly wider field of view as compared to the 52. This will become more apparent the wider the AFOV is of the eyepiece, in my experience. We often end up spending more on eyepieces than we did on the telescope. When discussing eyepieces, you will hear people comment on how well the eyepiece is corrected. Quality this good usually costs a lot more. PayPal, cash, bank transfer are all acceptable. But for AP you should really start your planning with the mount. The TFOV will be as wide as your 40mm Plssl, but with greater magnification and a slightly darker sky background. We can see that 2 eyepieces have an advantage over 1.25 eyepieces when designers are making wide-view eyepieces. https://www.amazon.com/Orion-8879-1-25-Inch-Enhanced-Telescope/dp/B000BMPBLK/ref=sr_1_8?crid=3KKUJRXYYN7DI&dchild=1&keywords=telescope+diagonal+1.25&qid=1610887695&sprefix=telescope+diagonal%2Caps%2C512&sr=8-8, Excellent article and very good recommendations.
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