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. I often recommend the 2 in this series as excellent low-power wide view eyepieces, especially in scopes at focal ratios below F8. You are looking through a LOT of atmosphere which distorts the image. Not perfect to the edge but better than the Bresser, in my opinion. For visual use, 1.5X, 2X, 2.5X, and 3X Barlow lenses are common. Plus the FOV expands as you zoom to the higher powers. So its best for use during duller times when there isnt much brightness visible. Despite this, I also have some Plossls which are indispensable. Plossl eyepieces are typically used for observing and viewing things at long distances, but they can also be useful when using a telescope to provide both magnifying power and erecting the images. Take the AFOV of the eyepiece (provided by the mfg) in your case 82 degrees I also just bought the Celestron Starsense 102mm refractor (650mm focal length, f/6.5) as a first scope for me and my kids. 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. Using this approach, you would buy a 2X Barlow and hold off on the 4 mm and 3 mm to see if you can reach these magnifications often enough to justify buying an eyepiece. https://telescopicwatch.com/?s=barlow, Best of luck with your new telescope. High-quality Plssl eyepieces provide high contrast and sharpness across the entire field of view. Required fields are marked *. A 32mm Plssl is worth it. Plossl eyepieces have an eye relief equal to about 80% of their focal length. Meade telescope maksutov eyepiece ETX-105EC Super Plossl 6.4mm 1.25" w capsule. 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 are certainly much better options out there but at a significant cost. The "sharpness" you are seeing may well be better explained by the focal length of the ep than the quality of Plossls in general. It costs a lot to get that last 10% of performance. Remember that visual and AP have very different requirements, so plan on at least two different optical tubes. If you cant use 2, that 32 mm Plossl, which has a 50 degree AFOV, will give you about as wide a field of view as you can get in a 1.25 eyepiece. 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 . . Hi - I bought these from another AM'er 1 year or so back, thinking I will get into visual astro, But never found the inclination, So here it is for sale 9mm Nagler type 6 mint with box and caps,16mm Nagler type 5,optics are exc. How Good Are Super Plossl Eyepieces for Astronomy? The only reason it's in this list because of its price and a long focal point. This SVBONY eyepiece review should get you up to speed with the budget stargazing options. But just because an eyepiece is 2 doesnt mean it has a wider field of view than one that is 1.25. ORION SIRIUS PLOSSL 10mm telescope eyepiece 1.25" - $17.01. It was named after Peter Barlow who invented it in the 1800s, so it is usually capitalized. The original Meade 5-piece Super Plossl hasnt been in production for decades and at this point is more of a collectors item than a high-performance eyepiece. Orion SkyQuest XT8 Intelliscope Review You have to decide how fussy you are about the edges and what your budget can tolerate. Take a look at your manual or users guide. In the next section, we will talk about the AFOV of an eyepiece. If that is the case, it will give me another reasonably good, inexpensive zoom to recommend to beginners. 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. I really like the simplicity and compactness of these simpler designs (ie: Plssls, Orthos, Kellners, etc). Elena is a Canadian journalist and researcher. 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. (Svbonys Plossls, for example, are optically identical to Orions Sirius Plossls). There are inexpensive adapters that will let you use standard 1.25 eyepieces in a .965 focuser/diagonal. Most modern telescopes use a focuser, or diagonal, that accepts 1.25 eyepieces. For shorter focal lengths, the StarGuider BST series eyepieces have greater eye-relief, so are better suited. These lenses are connected together. Gold Line eyepieces also offer better eye relief than Plossl eyepieces, especially at the shorter focal lengths. This is my all-time favorite eyepiece and the one I use more than all the others put together. I am not aware of an ES branded 70 degree series in the USA, but they do have a Bresser branded 70-degree series. Eyepieces are a religion. Plossl eyepieces have an eye relief equal to about 80% of their focal length. Pentax K-70 Astrophotography: The Ultimate Camera on a Budget! I've got a one-off plossl like that in my kit that I'll probably never sell, (aside from my 5 element ones) and it's one that is rarely seen. The TFOV of the Hyperion will be greater than the TFOV of the Plssl, but the magnification will be about the same. I also really liked my E-Lux 32mm, a Kellner. 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. You could base this on 3, 4, 5, 6 or more focal lengths/magnifications. 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. 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. 11 = 163 = .5 Major telescope brands such as Celestron supplies Kellner eyepieces with their r least expensive telescopes and still may. Now we just divide it up and fill in some sample focal lengths. So yeah, they are good.. and some are even better than others, and more collectible. A Televue Plssl may be better than a generic one, but the difference is probably not worth the additional cost. Conclusion. There is one aspect in which a Kellner can actually outperform a Plossl: eye relief. 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 companies rebranded them under their own names. I often had to drop back to about 180X because of poor seeing and transparency. That is a really interesting picture. They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. In 1860, Georg Simon Plossl invented the Plossl eyepiece. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. Divide that by the magnification of that eyepiece in that scope. You might be able to find a Kellner, or perhaps a high-quality Orthoscopic. The price can run to over $1000 per eyepiece. Heres the short answer Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. Omni 15mm Eyepiece - 1.25" Learn More. Required fields are marked *. 130 mm scope will have a max of 260X for planning purposes. 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 guess my curiosity is mostly about the diagonal. condition as described, a good transaction. They work great every day and get you where you want to go, but dont have what the higher priced models have. 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. But dont fear that you will waste your investment as eyepieces are standard sizes. 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. With a refractor, SCT or MCT, it is usually better to get a correct image diagonal than a correcting eyepiece. As for Barlow Lenses, take a look at this article. Our previous exchange convinced me to start out with an 80mm refractor. The Wiki article(s) were very good if anyone else is confused. However, i can read very well without my glasses with almost microscopic vision and can use my binoculars without glasses. We have compared Plossl against Kellner eyepieces in a previous article. It's no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. The Plossl has good color correction plus is free of the ghost images that plague the Kellner. Now, for my one or two low power eyepieces, I also like to know the field of view provided by that eyepiece. 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. 3. 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. However, Orion has managed to make one that is quite compatible with most styles of telescope. A Kellner eyepiece has 1 double lens and 1 single lens. I would suggest you also get a 2 low power wide view. The downside to this type of lens is that they can cause chromatic aberration which creates colored spots around bright objects such as planets or stars due to the different wavelengths not going through equally. These and the essentially identical AT Paradigm are universally praised as good quality eyepieces with a wider 60-degree apparent field of view. 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. 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. However, I have eyepieces with much smaller exit pupils and they work fine. Edge sharpness is just satisfactory, nothing to boast about, as is the apparent field of view. After these, we have mostly proprietary designs from various eyepiece companies. You can find the eyepieces I use and recommend in this article. Omni 9mm Eyepiece - 1.25" Learn More. I have used these in my F6 and F5 Dobs and find them a good value for the price. But with 2 eyepieces and a Barlow, you have the full effective range of your telescope. It comes with two Barlow lenses, one Newtonian eyepiece, and three Plossl eyepieces in the set. Do you think it would be sensible for me to look at getting a higher magnification specific eyepiece? Do I need an adapter if my scope has a Plossl lens? They also offer more eye relief than Plossls at the shorter focal lengths. This type of design provides for both total magnifications as well as an erect image with little distortion. I can say that most of my plossls have been replaced by other eyepieces for various reasons. 75-225X, 1.5X Barlow In that respect, they are similar to the Explore Scientific 82 degree mentioned earlier. Lower power almost always looks better than higher power. My most used eyepiece is an 8-24 mm zoom. . Finally, the worldwide pandemic has led to shortages and price jumps on many items. Also, children do not often have highly developed motor skillsso I would avoid the frustration of switching out eyepieces, and consider a zoom lens. Plossl eyepieces are perfect for astronomical viewing because the field of view is wider. We have a range of 32 mm to 3 mm. Eye Relief: This refers to how close your eye has to be to the lens in order to see the full field of view. I need your advice on it. Look at the apparent field of view specs and understand what this means for the field of view. The tradeoff was that each lens surface added another internal reflection, reducing contrast and adding glare. A 20mm Plssl is probably worth it, if for no other reason than to compare the views it gives to the 21mm Hyperion you have. With a 8" dobsonian, a 6mm is very versatile. short answer: yes. You are talking about the technical details of how a Barlow works, and I agree. Why not go back to the people who sold you the scope and get their help. Finally, a wider field of view just makes it easier to find stuff. I owned an XT8 Intelliscope which is the same optical tube on a PushTo mount. This eye piece provides the maximum true field of view in the 1.25 inch format. They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. AP is all about the mount and accurate tracking. 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. The 66-degree AFOV of the Gold Line series provides a 32% wider field than Plossl eyepieces. Im fairly picky so would extend budget for better eyepieces if its worth it. Lets give an example. Is there much of a difference between the celestron and haader? thanks for all your help. I beleive this is the same as they ones you asked about. 4mm Eyepiece vs 20mm Eyepiece. In stargazing, eyepieces are as important as telescopes are. Interesting points Philip. From planetary viewing to deep sky watching. Thanks. 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! With a 130mm-F5 I would use a Plossl 32mm for its low-mag-wide-view. To achieve these benefits, they may use special glass and more costly manufacturing. One learns by observing. You can read a thorough review of Goldline eyepieces here. The field of view of a p Plossl eyepiece is typically 60 to 120 degrees. You alluded to them, but you never mentioned Tele Vue. In my opinion, you do not. There is no shortage of accessories for the Nexstar series. Your email address will not be published. But what are the other differences? I possess an embarrassing array of fine eyepieces with names like Ethos and Nagler and Delos. Some of these series also offer 2 eyepieces for telescopes that can accept 2 eyepieces. When you are shopping, if you need long eye relief, make sure you are selecting the correct ones. These are the workhorse eyepieces of today. 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. At this point, a Plossl and a Kellner are so close in price and performance that you may as well get the Plossl. (often referred to as Pseudo Masuyama). Today, most beginner telescopes of any quality are sold with either Kellner or Plossl eyepieces. The design of a Plossl eyepiece consists of an objective lens with one side that is convex (wider than its length) while the other side is plano-convex or flat in shape. They also improve a bit when it comes to eye relief. Over $250, I will label premium eyepieces. Recall that your lowestpower eyepiece's exit pupil should not exceed 6mm. What Does It Do. Thanks, Angelo M. You picked a great first scope. Even big telescopes are subject to limitations imposed by the atmosphere. It also gives the widest possible exit pupil in my dob and SCT, very handy when using nebula filters. Offering a wide 43 apparent field of view, this 40mm Orion Sirius Plossl Telescope Eyepiece provides extremely sharp images of impressively high contrast. My love affair with space began in a field in India at the age of 7, when I looked up at the Milky Way for the first time. Again, I only do this for my low power wide views. I just added the 4.7 mm. None of my fancy EPs have enough contrast for this application. It's one of the best choices you have when it comes to budget stargazing. Every new skill takes time. 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. Are there any good low-cost 2 EPS out there? What should one opt for a 2 EP over a 1.25? The Big Bang Optics was started because of our love for astronomy and to help others like us find the best telescope and accessories. Again, for no other reason than to compare it to the 17mm Hyperion and draw your own conclusions about Plssls. The TFOV will be as wide as your 40mm Plssl, but with greater magnification and a slightly darker sky background. This is the link to the one I plan to buy as I know some others come with add ons: https://www.rothervalleyoptics.co.uk/baader-hyperion-mark-iv-8-24mm-universal-zoom-eyepiece.html, Thats great you had an XT8i that makes me feel confident I got a good telescope . A 15mm Plssl might be worth it, if you dont wear glasses. The Celestron Omni Plossl eyepiece range offers a nice entry-level range into the higher quality 4-element Plossl design. Customer reviews Average Rating (16 Reviews): Write a Review and share your opinions! We will now discuss the specifications of eye relief and apparent field of view. 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. Plossls are available from many suppliers in a wide range of focal lengths in 1.25 and 2 sizes. Soft rubber eye guard that's custom fitted . https://telescopicwatch.com/best-telescope-mounts-for-astrophotography/, Then you look at the optical tubes. Most telescopes come with one or two eyepieces, which gives you one or two magnification options. I already got the 10mm super wide because of the added eye relief but at 15mm both have the same eye relief. A Plssl is probably as good as any 32mm eyepiece in a 1.25 inch focuser. 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. You are asking about a very specific eyepiece in a very specific scope combined sometimes with a Barlow. However, there can be a problem bringing the eyepiece into focus. Many brands of eyepieces are available, including SVBony UltraWide, Astromania UltraWide Angle, Agena Astro StarGuider Enhanced UltraWide Angle and others. 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. It comes with 1.25 Plossls 25mm (26x) and 10mm (66x) eyepieces. If you are on a strict budget, this is a good choice as a zoom eyepiece. Yes, eyepieces is a large and complex topic. Is it just about finding and framing, or do wide fov EPs create a more immersive experience? In retrospect, I should have included Tele Vue. However, you may see them at higher prices for the short term. Your email address will not be published. This design has some advantages over other designs, such as the Kellner eyepiece or Orthoscopic eyepieces. You can add the specialty single FL eyepieces later if you wish. You noted eye relief is important for those wearing glasses. 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. Once I knew how much I liked the zoom I upgraded to the Baader Hyperion Zoom. Whether it is cars or telescope eyepieces, there are inexpensive ones, upgraded models, and very expensive ones. But I have one little niggle. Are Plossl eyepieces any good? 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 . Its made up of four lenses in two groups. Good quality. It is all about your budget, your goals, and your objectives, as outlined in the article. Thanks for going through the entire post. I took notes and now can shop with confidence This will give you a lower power and a medium to high power eyepiece, depending on the focal length of your scope. . Age is not part of the equation. I have personally tested a few Super Plossl and compared them to their regular counterparts by the same brand. For what it's worth: I believe the Omni 1.25 inch 2x Barlow is one of the Shorty Barlows manufactured by GSO. Oh the pain of uh having access to really cool eyepieces.). 2. I loved my Baader Mark-IV 8mm-24mm Zoom+Barlow combo in my 8" EdgeHD. 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. If you had to choose 1 low-power 2 EP for chasing deep sky objects (again, at 600mm f7.5), what size piece would you go for? Good evening everybody. Some brands will add better lens coating, darker edges, or a higher quality case to their Super Plossl products, but strictly for performance, there isnt a difference between the two. The 5-lens-element pseudo-Masuyamas that telesonic mentioned are/were fine eyepieces.
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