In Stock. APM140-725. Compared to most mirror systems you will discover more details with better contrast - planets will simply appear sharper. Discover what we really liked about it and what we didn't like so much! This fine adjustment knob allows objects to be focused much more accurately. Omegon Apochromatic refractor Pro APO AP 85/560 ED Triplet OTA Product no. 360° rototation for the perfect image detailObject found and focused, but misaligned? Explore Scientific FCD100 series triplets are well-regarded, and have fairly good optical performance in general, but their focuser design is not as good as the WO GT series', so you may encounter focuser sag with heavier cameras. I initially bought it because it was dirt cheap and I had sunk all my funds into the mount (an Orion Sirius). The entire tube is lined with a black velvet-like fabric. And it all works with a fully illuminated and flat image field. Every astrophotographer will recognise the problem: just as you think you’ve got the focus right you overshoot the target. The Astro-Tech AT80EDT's slow-polished triplet optics, ED glass center element, and state-of-the-art optical multicoatings are even more impressive when you consider the package they come in. ... APM Doublet SD-Apo 140 f/7 FPL53 OTA mit 3,7" Auszug. Esprit 100mm ed triplet apo refractor. Another M63 thread is for your full-frame camera or a FieldFlattner. ), F-ratio, how tightly manufacturer controls their quality, and so forth. TS-Optics Photoline 140 mm f/6,5 Super Triplet Apo - Carbon Tubus. Tranport case - The 'cabin' of the refractor. Perhaps an elongated object is not aligned with the long axis of the chip but at right angles to it. The 152mm triplet apochromat is suitable for all amateur astronomers who expect maximum sharpness and contrast from a telescope. The Orion EON 115 ED Triplet APO telescope is a buy that you will not be disappointed with. With a focal length of 335mm and a fast focal ratio of f/5.5, this fully multi-coated Explore Scientific 102mm FCD100 f/7 ED APO Classic White Triplet Refractor $1,899.99 Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep sky treasures of the Messier catalog with Explore … the differences are color correction. You must keep in mind that even though the scope is a doublet, you need to buy the corresponding field flattener which has another lens in it. It does it all. With a focal length of 335mm and a fast focal ratio of f/5.5, this fully multi-coated : 52026 Manufacturer: Omegon. And as a rule, you will not pay more for these premium triplet telescopes than for a normal doublet ED refractor. I've been looking at refractors and have learned that I know surprisingly little about them. Do you want more contrast, sharper images? The 2” focuser is the right connection for your camera. ), glass used (flint/crown, ED, fluorite, etc. Keep everything is secure: The transport case for your optics. I'm in exactly the same boat. Nicer astrophotos, with which you rediscover the skyWhat is it that drives astrophotographers again and again? Gewicht. Look forward to observations and recordings that will be remembered. WO redcat which is a quad (triplet plus flattener). The 6.5 pound 80mm f/6 Astro-Tech AT80EDT ED triplet apo refractor is just that scope. Anyway, after 40 minutes we decided to start the battle of the scopes. my current imaging scope is a WO FLT 110 triplet and its amazing. Why this triplet optic shows more detailsStop with contrastless pictures. How much do you know about the TS Optics 71 DSQ? With a closer examination, it does have some quality features, but is still rather entry-level if you’re comparing ED/FL elements. Gelukkig weegt je portemonnee na aankoop niet zo veel meer... Gelukkig weegt je portemonnee na aankoop niet zo veel meer... opm2: De EVO doublet uit topic ( als het dezelfde is die ik in gedachten heb) is korter dan de triplet TAK, ze zijn echter wel allebei een apo. Surprisingly, it has done quite well- it holds collimation well and seems to balance quite nicely. Länge. The design is ingenious: a hybrid of a Crayford and a diagonal rack and pinion. Wow, I could have written your post word for word! It's an inexpensive doublet and I love it. You will experience ultra-high contrast even at higher magnifications. You could get a WO redcat which is a quad (triplet plus flattener). it goes into its transport case. 3.665,55 EUR* * zzgl. Levenhuk Ra R80 ED Triplet OTA is a compact refractor for visual observations with an 80 mm 3.2 in objective lens. The tube of the Omega apo consists of a CNC-manufactured metal construction with a sophisticated anti-reflective system. You can see the Sharpstar 71 DSQ on sale here with no mention of FPL-53 glass, it is also not mentioned on the Sharpstar website. The skywatcher esprit 100ed with their esprit 100ed apo triplet. At night you should save yourself from now to start again and align an elongated object to fit the sensor. Crayford focuser with 1:10 reduction ratio Simple adjustment - the newly developed lens cell can now be collimated in a jiffy when required - guaranteeing that your apo will always provide a perfectly high-contrast image. An aluminum exterior and precisely moulded foam-element interior ensures the instrument is protected from dust and knocks. This results in higher contrast, and a cleaner sharper image with no spurious colour visible at all in the image. This telescope is a pearl for every amateur astronomer who appreciates a high quality image. The Sky-Watcher is a 120mm/4.7″ f/7.5 doublet with one lens element being crown premium Schott Glass New comments cannot be posted and votes cannot be cast. I'm also shopping for a refractor, and I think you replied to a thread where I asked a similar question. The focuser is focused via diagonal gearing and runs on plain bearings. So, if you only have visual goals, a good doublet may be better for you. The triplet air-gap objective lens with Japanese Ohara glass offers a clear image with sharp stars right up to the edge. Great question. Vom Preisunterschied zu einem Triplet erst gar nicht zu reden... Nun zum getesteten Teleskop. Der zweilinsige Refraktor hat gegen einen gemeinhin als farbrein abbildend angenommenen Triplet Refraktor einige Vorteile: geringeres Gewicht, geringere Transmissionsverluste (gegen Luftspalt Triplets), schnelleres Austemperieren. If I’m comparing images on astrobin, will I see evidence of chromatic aberration or is that likely going to be processed out, anyway? Stellarvue's Newest SVX Refractor: This year Stellarvue is developing a 140 mm f-6.7 apo triplet refractor. : 12799 Manufacturer: Omegon RRP: $ 1,890.00 Our price: $ 1,599.00 incl. Only problem is that it is not a telescope which is what put me off. The Altair 102-715 APO sports a triplet air-spaced FPL-53 Super ED lens system for better colour correction than normal doublet or dual lens telescopes. Using all of the techniques we have developed in making our SVX series telescopes, we have shortened the focal length and A more recent doublet, the older Meade "apo" at #10, with Hikari's FK01 ED glass (near-equivalent to Ohara FPL51), still has some relatively significant secondary spectrum (at 127mm ƒ/9 its is still quite close to 0.95 visual $ 1,499.00 incl. As for why ES FCD-100 triplet costs as much as a ZenithStar, well, it normally doesn't. 2.5 "pinion focuser with ball bearingsAlmost a real space saver is the 2.5 "gear extract, because it is big enough, no shadings arise.A genius hybrid technology from Crayford and gear makes him particularly strong and suitable for accessories up to 4kg Focus the ball bearings silently, so you can easily find the perfect focus A 1:10 reduction for the finest corrections completes this extract.These characteristics appreciate astrophotographers around the world. Feel free to discuss anything here, from what sort of telescope you should get, to how to actually use that scope of yours! ), glass used (flint/crown, ED, fluorite, etc. Press J to jump to the feed. Esprit ED Triplet APO Refractors Sort by Sort by Show 24 36 48 View as Esprit 80mm ED Triplet APO Refractor $1,699.00 Designed with the discerning astrophotographer in mind, … That said, it's a bit large to transport around and I'd love to not have to worry about collimation. The fully-coated optics deliver the brilliant image sharpness and wonderful contrast that one normally only associates with much more expensive apochromats. The micro-focuser is so mechanically precise however that it responds to even minimal changes when homing in on the precise point of focus. Connect the triplet and doublet field flattener with a high precision thin thread to keep the optical axis perpendicular to the image. The air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 There is an open cluster of stars in the centre of the nebula which is stimulating it to emit light. Levenhuk Ra R80 ED Triplet OTA is a compact refractor for visual observations with an 80 mm 3.2 in objective lens. The Astro-Tech AT80EDT's slow-polished triplet optics, ED glass center element, and state-of-the-art optical multicoatings are even more … With a focal length of 335mm and a fast focal ratio of f/5.5, this fully multi-coated objective offers superb color … The Altair 115mm F7 EDT is the ideal multi-purpose telescope platform, suited for the amateur astronomer interested in both visual and imaging use, and offering excellent performance in both areas. It is the fascination of depicting the sky in its most beautiful colors and shapes. What you will find is that any refractor will have different focus over the wide range of wavelengths available with a silicon sensor, so what is needed is an electronic focuser. Ein Triplet wie wir es aus namhaftem Hause als 102/816 bekommen wird aufgrund seiner hervorragenden Farbkorrektur auch gerne mal als super APO bezeichnet Schauen wir also mal wie sich ein Doublet gegenüber so einem Triplet schlägt. I know you want to go with an APO refractor and triplet is better than doublet but how significant are these rules? The 360° rotating extension makes this task easy, because it is done in seconds. This triplet air-gap lens, made with Ohara Glass from Japan, provides a vibrant image with pin-sharp stars right out to the edge of the field of view. ), glass used (flint/crown, ED, fluorite, etc. Portable sky cruiser: The brilliant 85mm apo with deluxe optics. I couldn't be happier with my doublet and it produces images that appear to be totally comparable to triplets to all but very seasoned astrophotographers. You can check my profile to see some images I've captured with it. William Optics provide the ‘Gran Turismo 81 APO’ which uses a triplet, f/5.9, objective employing a FPL-53 element and which again uses a rack an pinion focuser. The first thing we noticed was the fact that the Megrez ED was jagging behind in terms of thermal equilibrium. Precision focusing: 2" Crayford focuser with 1:10 reduction ratio. Product no. The Zenithstar series are generally considered a decent starting point, but their color correction isn't the greatest. The tube with Omegon apos consists of a CNC-machined metal construction with a sophisticated baffle system for preventing internal reflections. The triplet will eliminate some things you may or may not need to do. We extensively review the Orion ED80T CF Triplet APO refractor telescope. Ik weet dat die triplet-apo's als lood kunnen wegen. The short focal length would be a good beginning point for astrophotography, it is cheaper due to size but probably no compromises in quality. Explore Scientific Triplet ED APO 127mm f/7.5 Refractor Telescope with Carbon Fiber Tube and FCD-100 Hexafoc Focuser £2395.00 APM Telescopes LZOS 3-Element Super ED APO 130/780 Apochromatic Refractor Telescope with 3.7" Rack & Pinion Focuser - SPECIAL OFFER This means: an entire 6kg load-bearing capacity but nonetheless smooth focusing, thanks to roller bearings it is simple to rotate to find the perfect point of focus. This article is aimed at the new owner of a modern F8 or faster ED Doublet or triplet refractor who wants to star-test it, and has already read a little about star-testing online. Obviously, if we're strictly talking about optics, it makes more sense to go with the Gran Turismo line. And as a rule, you will not pay more for these premium triplet telescopes than for a normal doublet ED refractor. ED glass (and sometimes fluorite) triplet “super APOs”, such as those from AP, TEC and LZOS; also some 4-element Petzval designs like the TV NP101 and Tak’ FSQ106. We have painstakingly engineered an optical and tube solution to bring you APM quality at an unheard price. Das William Megrez 102mm ED auf einer Vixen Porta. For example, I've heard great things about the Williams Optics Zenithstar series but it's only a doublet. I switched to it from a 6” reflector as well. The journey is amazing and frustrating and educational, love it. An additional M74 thread serves for attaching your full-frame camera. It does it all. The reason for this is one of the best optical systems that we are aware of, with which this refractor creates captivatingly beautiful and exclusive astrophotos. You will enjoy ultra-sharp contrast even at high levels of magnification. 2.9" hybrid focuser - for full illumination. Jumps of 35mm in aperture. With this fine adjustment knob the object can be brought considerably more accurately into focus. Is it poorer quality lens material, poorer grinding/polishing of the lens, low quality coatings, or all of the above? The Altair 115mm APO sports a triplet air-spaced lens cell for better colour correction than normal doublet or dual lens telescopes. You get a completely illuminated and flat image field. The refractor is an unbeatable instrument, especially in low contrast conditions. Express shipment possible for delivery the day after tomorrow, 18.02.2021! I am still super basic in my processing skills in PixInsight. All of this makes it possible for a triplet to actually have worse color correction than a doublet, and that can happen even when similar quality glasses are used! to complicate things good doublets can match or even beat poor triplets in color correction. The home to all amateur astronomers & telescopes! I'm currently using a 6" newtonian reflector. Since the triplet lenses are air-spaced, they require coatings. Sky-Watcher S11430 : The Sky-Watcher Esprit 130 ed triplet 6" apo refractor is outstanding for wide field imaging • 150mm f/7 apochromatic triplet optics using ED glass • thread-on doublet field flattener • rotatable dual Of course that which applies to planets, applies also to star clusters or other deep sky objects. The entire interior of the tube is also lined with a velvet-like black fabric. The Altair 102-715 APO sports a triplet air-spaced FPL-53 Super ED lens system for better colour correction than normal doublet or dual lens telescopes. What about the ES ED80 makes it inferior? if it was my money and of the 3 choices i would get a the GT. In the triplet form, correction can be at the apo level, or quite close, except for the outer portion of the visual range, typically violet. VAT plus shipping costs. It's a quadruplet telescope, so it's a triplet with a built in field flattener. APM Doublet ED Apo 152 f/7.9 Optical Tube with AccessoriesThe APM 152-1200 Doublet is a mold breaker in the 6" Refractor category. The Sky-Watcher is a 120mm/4.7″ f/7.5 doublet with one lens element being crown premium Schott Glass and the other lens element being FPL … ESPRIT ED100 100 x 550 F5.5 ED Triplet APO Refractor Weight: 6.3Kg $3499 In Stock. Das Triplet schneidet mit Polystrehl 0,993 geringfügig schlechter ab aber der Unterschied ist natürlich rein theoretischer Natur. Omegon Apochromatic refractor Pro APO AP 85/560 ED Triplet OTA Product no. It’s specifically used in Explore Scientific’s FCD-100 series of telescopes designed for astrophotography. I know you want to go with an APO refractor and triplet is better than doublet but how significant are these rules? Simple reason being that refractors cost less in Europe. The new 152-1200ED features a Doublet lens cell using ED glass of FPL-51 complimented by a Lanthanum element to maximize performance. All Rights Reserved. VAT plus shipping costs ready for shipping in 24 h + lead time Rate now. For this reason, the Crayford focuser is designed to operate extremely smoothly. Compared to most mirror systems, you will see more detail and with better contrast - a planet which simply looks much sharper. When you observe planets with this apochromat, it offers you nothing less than an absolutely awe-inspiring experience. One advantage for astrophotographers is that once you have your subject in focus you can lock down the focuser at that position via a locking screw. Why? Explore Scientific ES 80 ED Triplet APO Review Image 1: Explore Scientific is known for refracting telescopes, quality eyepieces, the David H. Levy Comet Hunter , a Maksutov-Newtonian telescope and Twilight I and II alt-azimuth mounts. You can find further information about the Triplet ED Apochromat in this blogpost. Press question mark to learn the rest of the keyboard shortcuts. https://www.teleskop-express.de/shop/product_info.php/info/p4639_TS-Optics-71SDQ---71-mm-f-6-3-Quadruplet-Apo---Field-correcture-for-big-sensors.html. Capable of realizing my hopeful eventual ascension to expert level processing. The focus is thus much more stable against temperature fluctuations. An apochromat of this aperture offers a fantastic observing experience - as only a refractor telescope can. Home > Telescopes > Omegon > Pro APO > Omegon Apochromatic refractor Pro APO AP 127/952 ED Triplet OTA This product is no longer stocked and therefore cannot be purchased until further notice. Versand. This under $1000 telescope is best suited towards those who are taking the next step towards their astrophotography goals up from a smartphone. Do look at other commenters' posts, they have some great alternative suggestions too. 2.428,57 EUR* * zzgl. SharpStar 76EDPH f/5.5 Triplet ED APO Telescope The Sharpstar 76 EDPH scope features a 76mm air-spaced triplet objective with an ED glass element for excellent colour correction, contrast, and image sharpness. A triplet lens with an OHARA FPL 51 and an FPL 53 element eliminates chromatic aberration completely. The microfocus is mechanically so precisely manufactured that it reacts to the slightest adjustment, enabling you to focus easily. Also, this clear cut could be used to magnify the color of the opal at the same time working to protect the opal. ED Air-Spaced Triplet APO Refracting Telescopes Apochromatic (APO) lenses are designed to bring three wavelengths of light (red, green, and blue) into focus in the same plane. The apo's dew shield is extendable, taking the apo to a maximum 635mm in length. Perhaps a more seasoned photographer could easily see a difference, but I can't. ), F-ratio, how tightly manufacturer controls their quality, and so forth. If that's not complicated enough, Explore Scientific makes a triplet refractor that is roughly the same price as the Williams Optics doublet. It's quite complicated, in fact. When you say “color correction”, is that referring to chromatic aberration? Finally brilliant and sharp astrophotos: every astrophotographers dream comes true with this apochromat. Right on course with the flagship - the 104mm triplet apo for fantastic astronomy photos. The reason for this is one of the best optical systems that we know of. The 61EDPH II upgrades the original doublet objective of its predecessor with an air-spaced apochromatic triplet objective with one ED element. It's a $400 difference but how different will the optics be? Especially for small contrast differences, the refractor is an unbeatable tool. The 1:10 reduction ratio lets the point of focus be found with ease, even at high magnifications. If a lens goes out of collimation you can typically re-align them yourself but triplets will need to be sent back for alignment. This Apochromat will provide you with a whole new observing experience: whether for visual use or for astronomical photography. VAT You … There is a lot of factors involved in telescope's image quality: design (achro/apo/petzval, with/wo flattener, etc. They are surprised to discover that the star-test looks nothing like the text-books or the star-test images in green light, which may have been provided by the manufacturer using a monochrome laser like this. The 61EDPH II upgrades the original doublet objective of its predecessor with an air-spaced apochromatic triplet objective with one ED element. Who is the Orion ED80T CF Triplet APO Best Suited to? I know you want to go with an APO refractor and triplet is better than doublet but how significant are these rules? This results in higher contrast, and a cleaner sharper image with no It all too often happens that you as an astronomy photographer have an object in view which is not aligned with the camera image. ©2020 NelsonDevices, LLC. TSAPO150F8. TS-Optics Photoline 140 mm f/6,5 Super Triplet Apo mit 2 ED Elementen. The Omegon triplet apochromat offers excellent ED optics with three lens elements and precision Crayford mechanics. I use an Orion ED80. This not only simplifies transport, but also relieves the burden on the mount. Astrophotographers know the problem well - you think you have reached optimal sharpness, but actually you have overshot it. ED Glass Focal Length 1. We supply you with a sturdy carrying and transport case for your apochromat. No, we don’t think so… Bear in mind that both scopes are excellent performers and the price-to-quality ratio is unbeatable Carbon tubeThe noble black carbon tube saves you valuable weight. The apos image definition is significantly better than that of reflectors because it lacks the central obstruction with its associated deterioration in the intensity distribution of the Airy disk. The focusing of objects takes place in two stages - using the coarse focuser and then the 1:10 micro-focuser. Do you want a Megrez Fluorite Doublet instead of a Megrez ED triplet APO now you have heard this story? A journey to Namibia or an astro field trip in the mountains: observers love to go to unique and dark locations. Without being able to test them all side by side, what features do I look for that tell me this one is superior to that one? Note the phrase “near perfection”, it’s significant: no telescope using lenses can ever be completely free of chromatic aberration, it’s just a matter of degree. Heute gibt es dieses Teleskop auch mit Carbon Tubus, zu einem deutlich höheren Preis. I am very curious to see what others say about the topic. What performance improvement does the Wave Series triplet ED lens offer? Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep sky treasures of the Messier catalog with Explore Scientific’s ED140 FPL53 140mm f/6.5 Air-Spaced Triplet ED Apochromatic Refractor in Carbon Fiber with 3" HEX Focuser. Explore Scientific ED 80 - 80/480 Airspaced Triplet ED APO. 2” hybrid Crayford focuser with 1:10 microfocus. When I browse astrobin images, I can't tell the difference between images captured with a doublet or triplet. Unlike the doublet opal, the slice of opal found in the triplet is extremely thin, so the work of the clear capping would be to give the stone an amazing cabochon at the top. The refractor is your lookout tower and the mount your control - so that, in future, you will be getting the best results in the country. That means even if you connect a heavy camera, accurate focusing is always assured. The Omegon triplet apochromat excels with its exceptionally good craftsmanship. Definitely the best scope i have used in its class. I consider the scope a lifetime purchase. The two main contenders came down to the Sky-Watcher Pro 120 ED and the Explore Scientific 127 ED Triplet (ED127). Take this master photographer with you 'on board' - it is superb for virtually any type of astrophotography. This results in higher contrast, and a cleaner sharper image with less spurious colour. A premium instrument such as this requires a gentle treatment and a 'home of its own' - to ensure that it will provide you with many years of observing pleasure. I've seen images from Zenithstar telescopes that look fantastic- what anomalies should I be looking for? The Omegon triplet apochromat offers excellent ED optics with three lens elements and precision Crayford mechanics. The lens: producing highest quality images. Testbericht: APM 140/980 SD Doublet APO Prolog Auf diesen Refraktor wurde ich schon mehrfach angesprochen. Das Doublet erreicht mit Polystrehl 0,996 eine perfekte Farbkorrektur. It's still a fairly solid performer, because the doublets are matched specifically to each other by design. Why is this triplet so much cheaper than the Williams Optics triplet? The apo has a 2.9" focuser, meaning you can connect any camera to it - whether you have an APS chip or a full-frame camera, complete illumination is always guaranteed. : 12799 I'm currently using a DSLR for imaging. Colour fringing has been significantly reduced even further, when compared to ED doublet optics, and can barely be measured. 600mm - 988mm 3. GT series are normally very well corrected for a doublet, and made of higher quality materials. At just 44cm long, the apochromat can accompany you to all dark places. doublet vs triplet I've used both, and find that the filters limit the bandwidth sufficiently that it really doesn't make much difference in image quality. The apochromatic objective lens consists of three lenses that reduce chromatic aberration to a barely noticeable With this you can connect any accessory from our range, such as eyepieces and adapters. 200mm - 500mm 2. 80mm Triplet ED-Apo with three lenses, achieves an apochromatic correction for fantastically clear and color-pure images ; 2.5 "focuser with 1:10 reduction: Even larger and heavier cameras can be easily focused with high precision ; 360 rotatable camera to help you find the right orientation ; Why this triplet optic shows more details Every time the refractor is not in use, it returns to its 'off-duty' position, i.e. This telescope is a pearl for every amateur astronomer who appreciates a high quality image. The focuser has the usual 2”€ connection with a 1.25” € reducer. The optics achieve an image of the highest quality. The high-quality OHARA FPL-53 glass and a color-pure image lead to enjoyable observations with fine details that would not be possible with a simple look. Altair Astro Starwave 70ED William Optics provide the ‘ZenithStar 71 ED Doublet’ refractor having a focal ratio of f/5.9 and employing a rack and pinion focuser. 71cm mit ausgeschobener Taukappe. Better than any of the refractors you listed while being cheaper. TSAPO140CF. This problem can however be easily resolved with this telescope by simply rotating the 360° rotatable focuser. The two main contenders came down to the Sky-Watcher Pro 120 ED and the Explore Scientific 127 ED Triplet (ED127). It does it all. SharpStar 76EDPH f/5.5 Triplet ED APO Telescope The Sharpstar 76 EDPH scope features a 76mm air-spaced triplet objective with an ED glass element for excellent colour correction, contrast, and image sharpness. There is a lot of factors involved in telescope's image quality: design (achro/apo/petzval, with/wo flattener, etc. The 2.9" focuser has a standard 2" connection and a reducer for 1.25". This compact apo is the perfect piece of travel equipment for astrophotographers who expect the best from their optics. Their 71DSQ quadruplet with FPL-53 glass simply seems to be a rebranded Sharpstar 71 DSQ (you may have to switch the site to English). It's quite complicated, in fact. If I had to put the three in a pecking order, I would guess the Zenithstar is the "lowest" quality of the three, then the ES triplet, then the Gran Turismo but I'm basing that assumption solely on price. I've also been having a hard time locating a good gallery to see how that telescope performs, Astrobin has all of 38 images, not many DSO, and one where the guy uses the refractor as a guide scope. You're looking at a black friday deal :). What you will find is that any refractor will have different focus over the wide range of wavelengths available with a silicon sensor, so what is needed is an electronic focuser. What performance improvement does the 102mm triplet ED lens offer? 2 "and M63 connectionThe focuser has a standard 2 "connector with a 1.25" reduction. Benefit of doublets is the weight is lighter than a same sized triplet and they will cool down faster than the triplet. mit Schellen ca. Do you want to experience brilliant star clusters and see planets more brilliantly? MiniMistr Příspěvky: 399 Registrován: pon 05. kvě 2014 18:11:56 Bydliště: Nekoř Věk: 51 51 The apochromatic objective lens consists of three lenses that reduce chromatic aberration to a barely noticeable minimum. And as a rule, you will not pay more for these premium triplet telescopes than for a normal doublet ED refractor. doublet vs triplet I've used both, and find that the filters limit the bandwidth sufficiently that it really doesn't make much difference in image quality. ), F-ratio, how tightly manufacturer controls their quality, and so forth. The Omegon triplet apochromat offers excellent ED optics with three lens elements and precision Crayford mechanics. I've been also looking into TS optics, and I'm a bit concerned about how much I trust them. Because it is very important to keep your telescope well protected when transporting it. And that which is true for planets is of course also valid for star clusters or other deep-sky objects. Altair Wave Series 115 F7 ED Triplet APO-2019 Production Run now in stock, with 100mm removable binoviewer extension.Newer more refined OTA design wit The optional Altair PLANOSTAR 3" Field Flattener for astro-imaging (PLANOS-3.1.0-M48): This optional, dedicated large format field flattener is available separately with this telescope package for use with CCD imaging chips.
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