Can you suggest the total . But those EPs mentioned were all great too! Oh the pain of uh having access to really cool eyepieces.). As I mentioned earlier in the article, not all Plossls are created equal, which simply means that there are good Plossls and then there are bad Plossls. You are looking through a LOT of atmosphere which distorts the image. I really enjoy usingPlssls. 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. Are plossl eyepieces still worth it? Orion Sirius Plossl eyepieces are ideal for any type of telescope; refractor, reflector, or catadioptic. The big problem with Plssls is that the eye relief is about 0.75 times the focal length. Here we get into the BMW, Cadillac, Porsche, and Ferrari of eyepieces. 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. So, I am going to organize the guide around five questions and four formulas. A Plossl eyepiece lens provides more eye relief than anything else out there! Customer reviews Average Rating (16 Reviews): Write a Review and share your opinions! I recommend it often to beginners on a tight budget. Choose three focal lengths. 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. In my opinion, there are no wrong exit pupils. I often had to drop back to about 180X because of poor seeing and transparency. Visual astronomy is all about aperture, the more the better. This was my first zoom eyepiece and the one that caused me to fall in love with zoom. I hear that, sometimes you find one that is sweeter than others. The one exception I would keep in mind would be when working with Newtonian reflector telescopes below F5. With an f/10 telescope, Plossls are as sharp as any other kind of eyepiece of the same focal length. https://www.widescreen-centre.co.uk/explore-scientific-70-eyepieces.html. Comparing to Plossl eyepieces, Super Plossl is somewhat better for astronomy. Your email address will not be published. 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. Eye relief is the distance from the eye lens to your eyeball, and the higher the better (within reason). Was $38.99 - $99.99 Now $31.19 - $84.99 Compare Orion Edge-On Planetary 1.25" Eyepieces Plssl eyepieces are good all-around performers, producing sharp images at the center of the field, but they have only four lens elements. The field of view of a p Plossl eyepiece is typically 60 to 120 degrees. Pay attention to the eye relief, especially if you will be observing with glasses. Tip Its almost always cheaper to buy directly from Agena Astro. 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. For me personally, even though I don't use glasses to observe, I still don't want to dig out the view through a plossl or ortho eyepiece which tend to have short eye relief. Scott. 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 6mm Eyepiece - 1.25" Learn More. 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. You can still get eyepieces, but there are few choices. If there is a local club, I would suggest you visit and consider joining. You are talking about the technical details of how a Barlow works, and I agree. Also, note that the pricing is based on 1.25 eyepieces. However, for your extra money you get the finest manufacture, the best polish and coatings available. dnrmilspec is right. However, the BH Zoom is by far my most used eyepiece. These "other" ones I speak of, aren't technically that, they are a 5 element eyepiece, of a different design. I would recommend the Orion Q70 series over that. They are just OK, but I dont recommend them, especially in a low focal ratio scope. If you want a very good eyepiece with a bit wider field of view but are on a budget, these are very good choices. They are usable, but your eye will be extremely close to the top lens glass. I have seen elsewhere discussions about the exit pupil of eyepieces. They all work, but as you go up in price, you gain features or performance or both. 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. Thinking in a super ploss 32mm and maybe something between 9mm and 15mm . Where a difference can show up is that a lower number focal ratio scope will make it harder for an eyepiece to provide a uniformly good, in-focus image all the way across the field of view due to the steeper angle that the light arrives at the edges of the eyepiece with a low focal ratio scope, as compared to a high focal ratio scope. 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. There are three types of Plossl eyepiece: the regular, Super, and Orthoscopic. Omni 56mm Eyepiece - 2" Learn More. Soft rubber eye guard that's custom fitted . Newer multi-coatings are better, I suppose, but newer does not always mean better in the ocular game. Comparing Orion Telescope & Binoculars options, it appears that a Kellner can be found for almost half the price of a Plossl of the same focal length, although there are also equally cheap Plossls available from various sellers on Amazon that are highly comparable. If you are looking at eyepieces that are wider than 55 degrees AFOV, you will again need to consider looking at the better corrected, and typically more expensive, eyepieces. Here's the short answer - Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. 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. I have used these in my F6 and F5 Dobs and find them a good value for the price. These are exceptional eyepieces, and only available on the used market nowadays. However, i can read very well without my glasses with almost microscopic vision and can use my binoculars without glasses. I have owned wider eyepieces, but ultimately I just prefer the Plssls (must be a mental defect). Plossl eyepieces have an eye relief equal to about 80% of their focal length. Omni 40mm Eyepiece - 1.25" Learn More. For your application and the eyepieces you have or are going to get, you really dont need anything else. https://telescopicwatch.com/orion-skyquest-xt8-intelliscope-review/. Any 1.25 diagonal should work. . Fully coated with magnesium fluoride on every air-to-glass surface for excellent light transmission and high contrast views. This is just a planning target. The atmosphere is typically the limiting factor as we get to higher magnifications. We have a range of 32 mm to 3 mm. But the one I am recommending here is the Tele Vue Nagler series. . Within the budget-friendly realm are the 6mm and 9mm Goldlines/Redlines (66-degree Ultra-Wide-Angle) for telescopes with a focal ratio of f/8 or longer, and the excellent 58-degree Planetary eyepieces, sold by a variety of sellers on Amazon and by Agena Astro, which come in a wide variety of focal lengths and are optically superb for their price. Lets take a look. With a 8" dobsonian, a 6mm is very versatile. Or is this overkill and am I better off saving money and going forward something like the Celestron Zoom? They also offer more eye relief than Plossls at the shorter focal lengths. For that purpose it is probably easier to find one to borrow. This is why many telescopes come standard with at least one Plossl eyepiece. Now we can establish a target magnification range. So we say that an F5 scope benefits from better corrected eyepieces more than the F10 scope. As the clear cut worlds best eyepiece manufacturer, their name should at least be mentioned in an article like this. I have CPC 925 and I currently own Hyperion 10mm, Hyperion 17mm and Celestron plossl 40mm. The longer FL Plossls (>15mm) have some distinct advantages over more complex designs without the major disadvantage of Plossls which is short ER. The Plossl is a good all-around eyepiece design, is well suited for generic use and is relatively inexpensive to make. If you are very demanding and must have the very best, this is where you want to be. If you stumble the first few uses, dont be discouraged. If we look at the range I provided above, we see that we could replace several eyepieces with one zoom. Plossl eyepieces have a wider field of view that can go from 50 to 56 degrees. Plossls are the clear winner here in most cases, unless you have one of the wider-field 50-degree Kellners. But what are the other differences? In essence the design differences between Kellner and Plossl comes down to the number of lenses within the eyepiece barrel. Put the zoom on the Barlow for the high range. One of the TMB Planetary eyepieces are extremely nice for 50. Thanks. However, your budget must guide your purchases. By the 1980s, amateur astronomy equipment suppliers were still selling new telescopes with Huygens and Ramsden eyepieces, not merely because they were cheap but because they lacked internal reflections. So yeah, they are good.. and some are even better than others, and more collectible. Also worth mentioning i wear glasses which I will wear while observing. As we continue, what would you recommend adding first? Your email address will not be published. Perhaps you have read about planetary eyepieces, DSO eyepieces, and other types of specific eyepieces. Do you think it would be sensible for me to look at getting a higher magnification specific eyepiece? With the XT8i I usually used the zoom configured with a 1.5X Barlow giving me a 75X to 225X which I found to be nearly perfect for that scope. There is the 56mm Meade Plossl which magically turns my short FL refractors into their own finder scopes. The way a Plossl eyepiece works is by using the convex lens and concave lenses to create an image that has both total magnification of what youre viewing, as well as erect images. 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. 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. Perhaps you should seek out help from your local astronomy club. You alluded to them, but you never mentioned Tele Vue. I foolishly destroyed it while experimenting with solar projection, because I hadnt realized the metal-and-glass construction was aided by a plastic retaining ring on the field stop, and I hadnt realized you do not need to change the eyepiece focal length when doing solar projection. It also was considerably more expensive. It costs a lot to get that last 10% of performance. A 15mm Plssl might be worth it, if you dont wear glasses. And certainly, if you are getting into AP you are going to need that big budget. 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. A zoom eyepiece works like the zoom lens on a camera. Dont worry about the math, as its simple stuff you can do with any calculator, on paper, or perhaps in your head. I have the 38 mm and recommend it often. Magnification or power = focal length telescope / focal length eyepiece, Focal ratio = focal length telescope / aperture telescope, maximum practical aperture = aperture X 2, Edges of the optics are blackened for increased contrast, which prevents internal reflections, Anti-reflection, fully multi-coated optics provide enhanced light transmission for bright and clear images. Looking from different sorts I found the Baader Aspheric 31mm and 36mm.these two eyepieces allow me to switch between 2" and 1.25"just by changing the barrel. As I mentioned earlier in the article, not all Plossls are created equal, which simply means that there are good Plossls and then there are bad Plossls. To estimate the highest practical magnification for your telescope, you take the aperture in millimeters, mm, and multiply it by two. Most people prefer the wider TFOV. There are so many others at comparable or higher prices, many of which are quite good and some rather poor. Celestron 2026 Erecting Prism Barlow Lens Set is well suited as an astronomical viewing lens kit or for enjoying terrestrial sights like nature walks, sporting events, and more! We also joined our local Astronomy Club and look forward to joining others under the night sky when the opportunity presents itself again. . The Hexagon Zoom Eyepiece is made from durable plastic material that resists scratching and it has an eye relief distance of 15mm. You have selected a very good starting telescope that will serve you for many years to come. In stargazing, eyepieces are as important as telescopes are. The stock 9 and 15mm Omnis were very good. My Meade 4000 56 and 60 degree Meade Plossls are pretty sharp to my eyes and do pretty well for me. By default, expect a 40-degree field of view in a Kellner and a 50-52 degree field of view in a Plossl. So plan this into such a purchase. I would wait till you get the scope and use the included eyepieces. still, i somehow managed to avoid the eyepiece pitfalls when buying used off ebay. It uses two symmetrical pairs of glass elements (one convex and one concave) to pass the light. 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. Plossls tend to come with large, ground-standing Dobsonians, whereas youre more likely to find a Kellner sold with a tabletop Dobsonian. If you just want a quick answer, skip to the conclusion at the end of the article. Another really helpful article, Ed. Youll find yourself adjusting these type of factors less than. Many thanks, Sophie. Here we focus on becoming a knowledge hub for astronomy and astrophotography enthusiasts. Prices can run from $20 to $200 so the field is pretty broad. Stargazing Help is a participant in Amazon Associates program. Finally, the worldwide pandemic has led to shortages and price jumps on many items. I couldnt find any suggestions on your site about diagonal recommendations. Even though the design has existed for more than a century, it has stood the test of and is still today the standard against which other eyepiece designs are measured. This is where the second formula comes into play. I havent been into the hobby for long but my experience is in line with whats been said. These tend to run toward the more expensive price range. It comes with 1.25 Plossls 25mm (26x) and 10mm (66x) eyepieces. Many thanks. You have to decide how fussy you are about the edges and what your budget can tolerate. They also improve a bit when it comes to eye relief. I often recommend it. A four-element eyepiece was made by putting together two achromatic doublets with different focal lengths. If you just want eyepiece recommendations and dont care about the details, Im adding that section right below before we go into the specifications that answer the above questions and make use of the formulas. Heres the short answer Plossl eyepieces are generally better than Kellner eyepieces, but they also tend to be more expensive. Recall that your lowestpower eyepiece's exit pupil should not exceed 6mm. For it's cost, a 32mm Plssl eyepiece is hard to beat. 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. A key thing to remember is that eyepieces are universal. The 26 and 32 are usually the first ones I reach for. It will also make your life easier if youre out observing on windy days that would otherwise blow off the front cover of your telescope. I have had a good experience with the SVBony brand and the Agena Astro brand. These Astromania Plossl eyepieces provide a good way to do exactly that without breaking the bank, and this is what I love about them: they're an affordable way to significantly upgrade your telescopes. You noted eye relief is important for those wearing glasses. Some accept 2 and have an adapter that allows you to also use 1.25. Typically, these will be 25 mm and 10 mm or something close to that. Free shipping for many products! I have an F4 Newtonian reflector and if I use an eyepiece of longer than 25 mm, an exit pupil of 6.25, I start to get a dark area in the center of the field of view which is a shadow of the secondary mirror. This Super Plossl design was better than regular Plossl eyepieces, but not by much. This is the link to the eyepiece I am looking at potentially buying, would you recommend this over the Orion one or vice versa do you think? Elena is a Canadian journalist and researcher. But with 2 eyepieces and a Barlow, you have the full effective range of your telescope. They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. Best suited for telescopes with f-ratios f6 or slower. Apparent Field of View: This is a measure of how wide a view the eyepiece will provide as compared to alternate eyepieces. Lenses are fully multi-coated for excellent light transmission and reduced internal reflections. As a result, this can cause aberrations in the image as you move from the center of the view toward the edges. https://telescopicwatch.com/best-barlow-lens-and-how-to/, Celestron 8-24 Zoom Review If your telescopes focal length is different, just change the focal length in the formula. As new anti-reflection coatings were developed, it became possible to actually make use of complex lens arrangements (not just in relatively simple 4-element systems but also in convoluted, extreme wide-field eyepieces such as the TeleVue Nagler). i dont have 1 of everything, and i bought the best i could afford on a low budget; meade and orion. I once had to use a 6mm Plossl to attempt to perform a star-test collimation for a telescope at the observatory. (Svbonys Plossls, for example, are optically identical to Orions Sirius Plossls). 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! A rubber safety cap protects the lens when not in use while also providing additional grip on this 35 mm Plossl eyepiece. Warranty Limited Warranty against defects in materials or workmanship for one year from date of purchase. These are matters of individual preference and budget. All of the Omni eyepieces have a 1.25" barrel size with the exception of the super low power 56 mm, which has a barrel size of 2". Offered in both 2 and 1.25, these are excellent eyepieces. 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. Simple Plosels work well and unless you have money burning a hole in your pocket, I would start with simple affordable eyepieces. So if you need to go to Arcturus and then go 2 degrees to the right to find your target, you can use the FOV of the eyepiece to estimate 2 degrees. Required fields are marked *. These are highly sought after ep's, and hold their value well. Nice, thank you again for the additional inputs. Sometimes you want to see a wider field of view to locate an astronomical object like a nebula by using nearby stars. For what it is worth, a slow scope like your CPC9.25 (f/10?) In our example, we targeted 200X as the top magnification. But will the Baader CO with 1.5-2-3x Barlows deliver a visibly sharper and more contrast view of the Moon and planets than the zoom lens with a 2x Barlow, to compensate for the zooms convenience that is the question! Now looking for a couple of decent eyepieces. Worth is a subjective evaluation, so here is my subjective input: 1. I can recommend these with confidence. I have personally tested a few Super Plossl and compared them to their regular counterparts by the same brand. https://www.amazon.com/Orion-8829-Wide-Field-Telescope-Eyepiece/dp/B000M89H7C/ref=sr_1_2?dchild=1&keywords=Orion+Q70&qid=1606584502&sr=8-2, The Explore Scientific 68 degree series would be better but at a much higher price. If you have a longer focal length telescope, your shortest focal length eyepiece will be a higher number than what I have shown here. 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 not a hard and fast rule, just a cautionary note. 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. Kellner eyepieces work perfectly with small and medium-sized telescopes. I continue to be very pleased with the ES82 eyepieces. Have Any Astronauts Been Lost in Space Forever. Being a total novice, I love the StarSense app and technology.

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