I am still super basic in my processing skills in PixInsight. ), glass used (flint/crown, ED, fluorite, etc. if it was my money and of the 3 choices i would get a the GT. You could get a WO redcat which is a quad (triplet plus flattener). Astrophotographers know the problem well - you think you have reached optimal sharpness, but actually you have overshot it. The air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 Capable of realizing my hopeful eventual ascension to expert level processing. We use cookies on our websites for a number of purposes, including analytics and performance, functionality and advertising. The Astro-Tech AT80EDT's slow-polished triplet optics, ED glass center element, and state-of-the-art optical multicoatings are even more … Surprisingly, it has done quite well- it holds collimation well and seems to balance quite nicely. The downsides are that they cost more to make, so it’s more expensive to buy, triplets take longer to cool down than doublets, and depending on quality, the differences can be marginal. I'm currently using a DSLR for imaging. The 2” focuser is the right connection for your camera. The journey is amazing and frustrating and educational, love it. The entire interior of the tube is also lined with a velvet-like black fabric. No, we don’t think so… Bear in mind that both scopes are excellent performers and the price-to-quality ratio is unbeatable WO redcat which is a quad (triplet plus flattener). Sicher ist das Teleskop selbst zumindest von der Optik gleich wie heute angeboten, jedoch der Lieferumfang weicht heute von dem seinerzeitigen ab. There is an open cluster of stars in the centre of the nebula which is stimulating it to emit light. 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 … The image definition of Apos is much better than that of mirror systems as they have no OTA obstruction with its associated deterioration in intensity distribution of the Airy disk. Der "Eiertanz" ging um die Farbreinheit dieses Teleskops. It's a $400 difference but how different will the optics be? 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! The focuser has the usual 2”€ connection with a 1.25” € reducer. The Altair 115mm APO sports a triplet air-spaced lens cell for better colour correction than normal doublet or dual lens telescopes. The Sky-Watcher 150mm Esprit 150ED Triplet APO Refractor is a professional instrument for the most demanding and exacting astro-photographers. If a lens goes out of collimation you can typically re-align them yourself but triplets will need to be sent back for alignment. Gewicht. There is a lot of factors involved in telescope's image quality: design (achro/apo/petzval, with/wo flattener, etc. Testbericht: APM 140/980 SD Doublet APO Prolog Auf diesen Refraktor wurde ich schon mehrfach angesprochen. a doublet, so this could explain the differences in cool down-time. Tranport case - The 'cabin' of the refractor. The 6.5 pound 80mm f/6 Astro-Tech AT80EDT ED triplet apo refractor is just that scope. This problem can however be easily resolved with this telescope by simply rotating the 360° rotatable focuser. 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. ), F-ratio, how tightly manufacturer controls their quality, and so forth. Keep everything is secure: The transport case for your optics. to complicate things good doublets can match or even beat poor triplets in color correction. It is the fascination of depicting the sky in its most beautiful colors and shapes. The 61EDPH II upgrades the original doublet objective of its predecessor with an air-spaced apochromatic triplet objective with one ED element. I use an Orion ED80. Observing a planet with this apochromat is no less than an absolutely amazing experience. The Omegon triplet apochromat offers excellent ED optics with three lens elements and precision Crayford mechanics. This will give you more focal length and is essential to astrophotography. However, if you plan on doing any imaging, an APO may be the better choice. Focusing on an object happens in two different ways: with the coarse adjustment knob and the 1:10 microfocus. ), glass used (flint/crown, ED, fluorite, etc. 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. The 61EDPH II upgrades the original doublet objective of its predecessor with an air-spaced apochromatic triplet objective with one ED element. A journey to Namibia or an astro field trip in the mountains: observers love to go to unique and dark locations. The two main contenders came down to the Sky-Watcher Pro 120 ED and the Explore Scientific 127 ED Triplet (ED127). Das Triplet schneidet mit Polystrehl 0,993 geringfügig schlechter ab aber der Unterschied ist natürlich rein theoretischer Natur. This compact apo is the perfect piece of travel equipment for astrophotographers who expect the best from their optics. MiniMistr Příspěvky: 399 Registrován: pon 05. kvě 2014 18:11:56 Bydliště: Nekoř Věk: 51 51 Carbon tubeThe noble black carbon tube saves you valuable weight. Obviously, if we're strictly talking about optics, it makes more sense to go with the Gran Turismo line. I suspect that there is very little benefit to having a triplet over a doublet unless you have a mono astro camera that is far more sensitive than a one shot color camera. Omegon Apochromatic refractor Pro APO AP 85/560 ED Triplet OTA Product no. 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. We have painstakingly engineered We have painstakingly engineered Um unsere Webseite für Sie optimal zu gestalten und fortlaufend verbessern zu … Compared to most mirror systems, you will see more detail and with better contrast - a planet which simply looks much sharper. I initially bought it because it was dirt cheap and I had sunk all my funds into the mount (an Orion Sirius). It does it all. 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. The microfocus is mechanically so precisely manufactured that it reacts to the slightest adjustment, enabling you to focus easily. Press J to jump to the feed. The tube with Omegon apos consists of a CNC-machined metal construction with a sophisticated baffle system for preventing internal reflections. The design is ingenious: a hybrid of a Crayford and a diagonal rack and pinion. ©2020 NelsonDevices, LLC. 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). I consider the scope a lifetime purchase. Better than any of the refractors you listed while being cheaper. Definitely the best scope i have used in its class. Take this master photographer with you 'on board' - it is superb for virtually any type of astrophotography. Simple reason being that refractors cost less in Europe. TS-Optics Photoline 140 mm f/6,5 Super Triplet Apo - Carbon Tubus. If I’m comparing images on astrobin, will I see evidence of chromatic aberration or is that likely going to be processed out, anyway? You will experience ultra-high contrast even at higher magnifications. The reason is a sophisticated three-line design with the premium OHARA FPL-53 glass for a crystal-clear picture. The triplet apochromat shows what is really possible: pure color and high-contrast observations and astrophotos. Every astrophotographer will recognise the problem: just as you think you’ve got the focus right you overshoot the target. With a focal ratio of f/5.5, the scope measures just 333mm in length with its dew shield retracted and weighs just 2.9kg. 6 kg. I'm currently using a 6" newtonian reflector. I'm waiting to see to answer too. The hard part of this is processing your data. We supply you with a sturdy carrying and transport case for your apochromat. : 52026 Manufacturer: Omegon. So, if you only have visual goals, a good doublet may be better for you. This results in higher contrast, and a cleaner sharper image with less spurious colour. What are the differences here? Vom Preisunterschied zu einem Triplet erst gar nicht zu reden... Nun zum getesteten Teleskop. It’s specifically used in Explore Scientific’s FCD-100 series of telescopes designed for astrophotography. This Apochromat will provide you with a whole new observing experience: whether for visual use or for astronomical photography. Colour fringing has been significantly reduced even further, when compared to ED doublet optics, and can barely be measured. 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. And it all works with a fully illuminated and flat image field. 600mm - 988mm 3. 360° rototation for the perfect image detailObject found and focused, but misaligned? The first thing we noticed was the fact that the Megrez ED was jagging behind in terms of thermal equilibrium. TS-Optics Photoline 140 mm f/6,5 Super Triplet Apo mit 2 ED Elementen. We have painstakingly engineered an optical and tube solution to bring you APM quality at an unheard price. i used to own the early version of the ES ED80 you linked and can for sure without a doubt say it does not have perfect color correction, you will get some haloing around bright stars in the blue channel, its probable the Zenithstars will also have this issue. An additional M74 thread serves for attaching your full-frame camera. 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 The Orion EON 115 ED Triplet APO telescope is a buy that you will not be disappointed with. The 360° rotating extension makes this task easy, because it is done in seconds. No, Redcat is a Petzval Achromat design, which is a doublet+doublet. Andromeda Galaxy complex, Michele Russo, 104/650 ED Triplet, Canon 700d The Heart Nebula (IC1805) lies between the constellations Cassiopeia, Perseus and Camelopardalis. The two main contenders came down to the Sky-Watcher Pro 120 ED and the Explore Scientific 127 ED Triplet (ED127).