You can buy a range of these from Modern Astronomy. They deliver sharp images in almost all telescopes. Also, atmospheric conditions can limit how much magnification you can use on a given night. Amazon.com : SVBONY SV137 Barlow Lens 1.25 Inch 2X Barlow Lens Metal Ah I see what you are saying, I had wondered whether this might have had an impact as Ive seen it mentioned before but dont fully understand it so will do some research, thank you . In our example, we targeted 200X as the top magnification. https://www.widescreen-centre.co.uk/explore-scientific-70-eyepieces.html. How do you focus - I would have expected helical focusers in the eyepiece holders but don't see any? The Big Bang Optics also participates in affiliate programs with Clickbank and other sites. If we combine a Barlow with an 8-24 mm zoom eyepiece, we have an amazing range. 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. Using your example: We will use a 100 mm telescope with a 600 mm focal length and Another way to look at it is that a 30 mm eyepiece in a 3X Barlow works like a 10 mm eyepiece.. 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. There is the 56mm Meade Plossl which magically turns my short FL refractors into their own finder scopes. Some will offer longer eye relief which can be important to eyeglass wearers. There is no problem using a Celestron eyepiece in a Meade telescope, for example. Then set your maximum based on your aperture and split it up. Worth it is a tough question to answer. You use the 8-24 zoom for the midrange. Plossl eyepieces are often included in better telescope packages as the starter eyepieces. This is a good thing, because normally the shorter the focal length of the eyepiece, the less eye relief you have. It was grueling, because I couldnt even get the entire field of viewI had to keep my eye hovering above the exit pupil. I think I will go for the BHZ because, as you say, I will be able to use it now and into the future. But the longer FL units are certainly useful. I often had to drop back to about 180X because of poor seeing and transparency. Be aware of the focal ratio of your scope. A Televue Plssl may be better than a generic one, but the difference is probably not worth the additional cost. My friend has one and he really likes it, and it is his third telescope. Generally, dont mess around with solar projection unless youre okay with damaging the instrument. I have had a good experience with the SVBony brand and the Agena Astro brand. This was my first zoom eyepiece and the one that caused me to fall in love with zoom. I still use my 30mm Celestron Ultima fairly often with some of my telescopes. 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. Kellner vs Plossl Eyepiece - What is the Difference? It was named after Peter Barlow who invented it in the 1800s, so it is usually capitalized. Something in the 30 to 38 mm range with a 65 to 70 degree AFOV. This wider field of view will make it easier to find your targets, allow you to view larger deep-sky objects, and provide a more immersive experience for everything that you view. Here we focus on becoming a knowledge hub for astronomy and astrophotography enthusiasts. Press Esc to cancel. 30 = 60 = 1.3 In my opinion, there are no wrong exit pupils. Using this 40 mm Plossl eyepiece is an excellent way to get a wide field of view with your telescope. In 1860, Georg Simon Plossl invented the Plossl eyepiece. Theres a reason Plossls are usually kept at 52 degrees. In this article, we will only focus on the differences between Plossl and Kellner eyepieces. I am going to use 6. Which is Stronger? Lets just say that once you get below F5, it is really hard for the eyepiece to deliver a clean image to the edge. 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. 32mm (20x & 40x). But you may only be able to achieve that rarely. Comparing to Plossl eyepieces, Super Plossl is somewhat better for astronomy. Even big telescopes are subject to limitations imposed by the atmosphere. 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. https://www.amazon.com/s?k=Orion+Q70&ref=nb_sb_noss_2, Understanding Telescope Eyepieces- There are recommendations, based on budget, Best eyepieces for telescopes 2023 | Space No price limit. Again, it only costs $30 to $40 to find out, so the education is not that expensive. Is there anyway you could include links to the eyepieces you mentioned in the last paragraph of your reply as Im totally new so worried about buying the wrong thing! They are all 4-element Plossl eyepieces, and most have a 52-degree field of view that is common to the Plossl design. So, I am going to organize the guide around five questions and four formulas. Of course, the entire eyepiece must be manufactured and finished correctly to realize the design's full potential. 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. 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. The quality of a Plossl eyepiece completely depends on the brand and model, so be very careful in our selection. As to a more immersive experience, yes, I would say a wider FOV does provide a more immersive experience. At this point, a Plossl and a Kellner are so close in price and performance that you may as well get the Plossl. With a 130mm-F5 I would use a Plossl 32mm for its low-mag-wide-view. The Plossl eyepiece has 4 lenses, consisting of 2 identical double lenses. Let's talk Barlows for idiots - Eyepieces - Cloudy Nights We will use a 100 mm telescope with a 600 mm focal length that only takes 1.25 eyepieces. This has nothing to do with your scope or eyepiece. PS. The atmosphere is typically the limiting factor as we get to higher magnifications. What focal length eyepieces should I buy? I am a BIG fan of zoom eyepieces, especially if you dont have many. In my scopes a simple zoom eyepiece like the Celestron 24-8mm or the Baader has replaced the higher powered plossls. Astrophotography with Nikon D3200: Can It Be Better? The 26 and 32 are usually the first ones I reach for. FOR SALE! I am very interested in viewing Nebulae do you think this set up will work well for that or do I need other eyepieces or filters? Kellner vs Plossl eyepieces for dobsonians? : telescopes - reddit Achromatic vs Apochromatic refracting telescopes. These tend to run toward the more expensive price range. I agree with your comment on zooms for kids. If youre still wondering between a Kellner vs Plossl, my advice to you would be invest a little extra cash and go for a good quality Plossl. Lets look at the minimum. i still use the binos. Celestron 1,25 pollici Omni Plossl telescopio astronomico britannico 32 Not really. If you go this route, you can always add single focal length eyepieces along the way to serve specialized purposes. But just because an eyepiece is 2 doesnt mean it has a wider field of view than one that is 1.25. Sooooo helpful! Learn more about our story and the team behind the scene. The biggest advantage is much better ER in a large ocular. The original design for Plossl eyepieces has existed since 1860. Combining a cheap eyepiece with a cheap barlow isn't a elegant solution. Plossl eyepieces have a wide FOV and are known for their clarity and sharpness. SVBONY Telescope Eyepiece Set Telescope Accessory Kit with 2x Barlow L The BH zoom is optically a 1.25 eyepiece. The Hyperions work well in SCTs and you can't beat that large eyelens and eye relief ,JMO. So I sincerely hope that this article helps you understand the similarities and differences between Plossl and Kellner eyepieces so that you can an informed decision and choose the best one for yourself. I once had to use a 6mm Plossl to attempt to perform a star-test collimation for a telescope at the observatory. One of the TMB Planetary eyepieces are extremely nice for 50. I have personally tested a few Super Plossl and compared them to their regular counterparts by the same brand. And, in general terms, the higher the AFOV, the harder it is to make an eyepiece that will present a good image all across the field of view, which also drives up the cost. I have seen elsewhere discussions about the exit pupil of eyepieces. What Does It Do. 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. If we look at the range I provided above, we see that we could replace several eyepieces with one zoom. 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. Because of this setup, you might also hear a Plossl eyepiece referred to as a symmetrical eyepiece. While I also have the Baader Hyperion Zoom, mentioned later, I continue to make use of the Celestron, especially in my smaller scopes. I wont go into all the types of aberrations that can be there. They are also good for those who have astigmatism because they are designed to be more forgiving with eye placement. Celestron Telescopes Reviews: Should you buy? - Little Astronomy It's no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. Good quality plossl eyepieces - Discussions - Stargazers Lounge From planetary viewing to deep sky watching. So we say that an F5 scope benefits from better corrected eyepieces more than the F10 scope. Again, I only do this for my low power wide views. But dont fear that you will waste your investment as eyepieces are standard sizes. The sharp/crisp view you get from your 40mm Plossl comes down to the relatively low magnification it provides. Yes, Plossl eyepieces are some of the most popular with amateurs and professionals alike. Find many great new & used options and get the best deals for Meade telescope maksutov eyepiece ETX-105EC Super Plossl 6.4mm 1.25" w capsule at the best online prices at eBay! Well, I'll just say it. You can do that by using this long focal length eyepiece. 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. 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. I also struggled to see features on both (gas bands on Jupiter and clear rings on saturn). A Barlow lens can save you money and add flexibility. Well-made lenses are expensive though, so in general the more lenses, the higher the price of the eyepiece. 130 mm scope will have a max of 260X for planning purposes. . The Plossl is a good all-around eyepiece design, is well suited for generic use and is relatively inexpensive to make. However, if you want to optimize your viewing experience, youll need to invest in a better-quality eyepiece. Note to spectacle wearers: Plossl eyepieces with 15mm and longer focal lengths are good choices for spectacle wearers but for shorter focal lengths the Celestron XCel LX series have greater eye-relief so are better suited. A typical zoom eyepiece has a focal length range of 8 mm to 24 mm. Then there is a pair of 32mm and 20mm TV Plossls which make my binoviewers work well with a Daystar Quark H-alpha solar filter. Your email address will not be published. They can also be found as Orion Expanse sporting a blue line rather than gold. I have seen wider-field Plossls. My Meade 4000 56 and 60 degree Meade Plossls are pretty sharp to my eyes and do pretty well for me. Edited April 23, 2010 by russ teh_orph Members 28 198 Author There are three types of Plossl eyepiece: the regular, Super, and Orthoscopic. 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. Despite this, I also have some Plossls which are indispensable. SVBONY Direct . If money is not a concern, you cant go wrong with Tele Vue eyepieces, any Tele Vue eyepieces. Some experience with Baader Aspheric 31mm/36mm? - Eyepieces - Cloudy Nights 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. 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! These eyepieces have about 35 to 50 degrees apparent fields of view and reasonable eye relief, though quite short for high magnifications. If there is a local club, I would suggest you visit and consider joining. However, you may see them at higher prices for the short term. So plan this into such a purchase. To achieve a maximum of 200X (2X the aperture of 100 mm), we solve for the focal length. All focal lengths offer 50 field-of-view except the 40mm which offers 42 For astronomical observations, such as viewing craters on the moons surface from Earth, high-magnification models are preferred because they offer more detail. The Plossl optical design is very good for long and medium focal length eyepieces, delivering a sharp, flat field and an apochromatic image. Are Plossl eyepieces any good? - KnowledgeBurrow.com In that respect, they are similar to the Explore Scientific 82 degree mentioned earlier. Im just starting out with astronomy and this really helped my understanding. This might contain more of what you need. Astromania 1.25" 4mm Plossl Telescope Eyepiece - amazon.com Finally, a wider field of view just makes it easier to find stuff. A four-element eyepiece was made by putting together two achromatic doublets with different focal lengths. 8.8 = 240 = .34 A Plossl eyepiece is one of the most decent general-purpose eyepieces that are available on the market. 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. 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. Jupiter and Saturn are low in the sky now. Kellner vs Plossl - Comparison table. I dont dabble in AP. As of the past couple years, it seems possible that the choice between Kellners and Plossls has been made for usyou either get what you get with your beginner telescope, or you will have to find a Plossl. See if you will observe with or without your glasses. But what are the differences between these two and how do you know which one to choose? You could base this on 3, 4, 5, 6 or more focal lengths/magnifications. The category is over $300 and some of these are way over $300. When you are shopping, if you need long eye relief, make sure you are selecting the correct ones. I want to help you select the best eyepieces for your budget and your telescope. 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. The magnification range that is appropriate to your scope. I owned an XT8 Intelliscope which is the same optical tube on a PushTo mount. This doublet design has an apparent field of view of 50-degrees or wider but can suffer from short eye relief making them difficult to use for some . Not all are Plossls, but excellent eps at f/10. I have to say that your questions are answered in the article. Kellner vs Plossl Eyepieces (Pros And Cons) - Scope The Galaxy 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. Plossls provide very good eye relief for eyeglass wearers in focal lengths of about 25mm and longer. The computerized pad and motor work on AA batteries which can last you a few hours. The Japan made 16mm Meade 3000 was a very nice medium power plossl and the 40mm in that series was surprisingly nice as well. All registered. Ive read reviews about my scope. dnrmilspec is right. Centuries of improvements led to achromatic refractors, where the primary lens is made up of two lenses of different types of glass, which reduces false color fringing and allows the telescope to be made considerably more compact. I took notes and now can shop with confidence Not everything in the sky benefits from high magnification. Videos for related products. Perhaps you should seek out help from your local astronomy club. I really enjoy usingPlssls. They are also really sharp. Glad you found it helpful. (Svbonys Plossls, for example, are optically identical to Orions Sirius Plossls). Does having a 70 vs 52 fov make a noticeable difference for double the price? . 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. Customer reviews Average Rating (16 Reviews): Write a Review and share your opinions! A 32mm Plssl is worth it. No price limit? These will normally be higher priced and may be outside the price range we show here. 4. I had one and sold it. I also like to have my face physically in contact with the eyepiece (or the eyepiece cup) so the tight eye relief of the shorter focal lengths actually works really well for me. Choosing the best eyepiece for you - Astronomy Now 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. Any 1.25 eyepiece will work with the BH Zoom 2 adapter. Required fields are marked *. You see the object in a wider expanse of space with more stars. 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: Save my name, email, and website in this browser for the next time I comment. I have just one Meade product currently and that is a series 4000 1.25 inch UHC type filter which I use for outreach. There is no shortage of accessories for the Nexstar series. I often recommend it. It doesnt matter what type of telescope you have, as long as your scope takes these standard sizes. 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. The difference in TFOV will be significant at this focal length. If you were considering a Meade Super Plossl, in that case just get the regular one also by Meade. 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. The Wiki article(s) were very good if anyone else is confused. We can see that 2 eyepieces have an advantage over 1.25 eyepieces when designers are making wide-view eyepieces. 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. Meade 32mm 2" 5-element Super Plossl Wide Field Eyepiece Plossls are the clear winner here in most cases, unless you have one of the wider-field 50-degree Kellners. In most cases, these are eyepieces that are focused on wider AFOV or better correction for low focal ratio scopes. Note that as we get into the higher magnifications, the millimeter jumps between eyepiece focal lengths gets smaller. Ideally, you want a minimum of three eyepieces for (1) low power (2) peak visual acuity and (3) high-power viewing. I started with the Celestron zoom. In the early days of telescopic astronomy, refractor telescopes were designed with a single lens at the front and a single lens at the back. In this case, I am going to define this by the focuser and eyepiece size. I dont think so. These come in focal lengths from 2.3 mm to 25 mm. At least you'll have one budget eyepiece that will give you a larger part of the sky at low magnification. Meade 4000 Super Plossl - any good? - Discussions - Eyepieces High-quality Plssl eyepieces provide high contrast and sharpness across the entire field of view. Plossl eyepiece is good for astronomy and microscopy. As said, they are cheap to compare. Am I correct? This design features 4 lenses that are paired in two close-set doublets for the eye lens and the field lens. OK that makes sense, many thanks. On many occasions, that will be too high power for the atmospheric conditions. . Again, for no other reason than to compare it to the 17mm Hyperion and draw your own conclusions about Plssls. Think of these as your Ford, Chevy, and Toyota of eyepieces.
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