SV expects to produce "all in-house" 100 units at 99% Sterhl along with a new 7â triplet and along with their 140, 130 and 102mm triplets, etc. The TS scope is already availableâ¦. 2 had FPL-53 while the other 3 had LZOS OK-4. There is no Chinese equivalent to FPL-53. Has anyone received an Agema scope? How does a 127mm F8 with no released details have the same spec as the TS offering? Also, the Agema scopes really shouldnât be a part of this thread as they donât use SD glass. Overlap of two quartets near δ 19 ppm and the doublet and triplet near δ … Plus ce facteur est élevé, plus la vision de l'objet à distance sera rapprochée, souvent au détriment du champ de vision et de la luminosité. Peter Blythe, the founder of Mineshaft, has had many years of professional mining experience at Mintabie Opal Fields where he discovered many pockets of opal. A doublet legendary tradition, found in Livy, makes King Latinus' daughter, Lavinia, the mother of Aeneas's son Ascanius. Your first sentence stands by itself. Thorlabs' cemented Achromatic Doublets are optimized to provide excellent performance in the visible region. BillP, the Tak TSA-120 triplet is light for its type, if you want a 120, knowing how you like your 102. Agema SD 120 & 130 https://www.agemaopt...com/telescopes/. Egotistical? Thorlabs' achromatic lenses cover the 240 - 410 nm, 400 - 700 nm, 650 - 1050 nm, 1050 - 1620 nm, 3 - 5 µm, and 8 - 12 µm wavelength ranges. You're assuming a lot here. Australian opal from our own mines and all types of gemstones from all over the world. Focuser or accessory differences are irrelevant, as they can be added/changed to any OTA. I think it's likely to be Hoya FCD100 glass. Yes, new doublet. Size: The SW is a doublet making it much lighter than 120mm triplets. I have a Stellarvue 125 Access and love it. The TS scope is already availableâ¦. Thatâs pretty costly. THere was a time when they measured 95% of the area, but that changed awhile back. I am guessing the "D" means doublet... but don't know for sure. Would this be a doublet, and will the lens be made in North America, or will it be sourced from China? Edited by peleuba, 14 January 2021 - 05:13 PM. This is not recommended for shared computers, Meade LXD-75 with TheSky 6 Pro and PHD autoguiding. 1. In some organisms (e.g. 125mm Objective â the same as the SV. Every Astro-Physics refractor ever made has been figured and tested by Roland. Dark end of the street. In this case SD stands for âSuper Doublet.â Just sayinâ. I have the test report for the SVX125D that I received a few months ago (the pre-owned one on SVâs site), and it is for 100% of the objective, showing 0.994 Strehl and 0.13 P/V. If money grew on trees, and I had one of those trees in my yard, I would definitely not hesitate to get one. All met the performance level I expected. Doublet, triplet, and quadruplet simply refers to the number of glass lens elements inside the telescope that bring the light into focus, and each one of these types has their own pros and cons. A doublet may have come into English from two different languages. It remains to be seen what the SV scopes will actually be and whether the entire objective will be tested or just the inner 95% as per a thread a while back. Stars are diamonds on a black velvet backdrop and … Tecnosky is a very reputable dealer, and usually rebrands only very decent or decidedly good products (some years ago sold a line of APOs with LZOS optics), Thanks for that link! BillP, the Tak TSA-120 triplet is light for its type, if you want a 120, knowing how you like your 102. The last three are basically the same scope. In my research we are talking 11lbs vs. 20(ish) for 120mm triplets. Advanced CMOS detectors enable next-generation astronomy. I currently also own scopes from TMB (1) and and Astro-Tech (2) and I am satisfied with all three. Cilia and flagella are found on many cells, organisms, and microorganisms, to provide motility.The axoneme serves as the "skeleton" of these organelles, both giving support to the structure and, in some cases, the ability to … with additional isospin singlets[6{8], doublets[9{14], triplets[15, 16] and so on. As for 100% of what? Membership & Affiliations My favourite of the bunch and the one I would go for if I did put in for a 5 inch apo/ED would be the 125mm TS scope. You're right, we are lacking in fine larger doublets in that aperture range. Instead he praises his most direct competitors as well. You currently have javascript disabled. However, Lana told me in an email last week that the telescopes were at the assembly stage, and that they hoped to begin shipping next month. Yes. I'd say there's plenty offerings really and several (but not all) are a different branding of the same OTA. Would mediocre guiding negate benefits of smaller pixel scale. The TAK FSA128 isn't made anymore and used ones donât seem to come up often. But in some ways, Roland is similar to Musk. That was a big factor. Iâm going to go with the Stellarvue offering with their upcoming 127D. So is 100% in the cell or out of the cell? 1. Esprit 80ED, 100ED, 120ED and 150ED Super APO triplets have a doublet field flattener to get a flat field and minimize aberration and distortion. $750 AUD. Also the 900mm focal length was still short enough to do some wide viewing (2.7degree true field with my 31mmT5) 127mm objective2. For example, the words fragile and frail both came from the Latin word fragilis. Our design for the achromatic doublets uses the helium d line (587.6 nm, yellow) and the hydrogen F (486.1 nm, blue/green) and C (656.3 nm, red) lines since these wavelen It remains to be seen what the SV scopes will actually be and whether the entire objective will be tested or just the inner 95% as per a thread a while back. I'd love to see a wide gap 140mm f/7 doublet to compete with the APM, in a smaller tube since they use their 152mm tube for the 140. This scope has the same specs and uses an FPL 53 lens element. Just because lenses are not made in-house does not mean they are in a league below him and his buddies. Star Adventurer - Am I missing something? 3. My question about the streuhl. 100% of the clear aperture. It was a battle between two sets of triplets, the Horatii brothers and the Curatii, perhaps respectively from Rome and Alba Longa. The mix of languages used in early legalese led to the tendency in legal English to string together two or three words to convey a single legal concept. Yes, let them come forth and be compared. I wonder why they quit making it? They are fluorite doublets. Vixen call their doublet line SD as well. Apo Doublet (no glass type is specified)3. Might be a good match with your 102mm. Thatâs probably more refractors than TEC and AP produce combined. And consider that last spring TEC released data on a batch of 11, 140mm lenses. I'm hoping the delay will be matched by the quality of the finished scope. And to date, SV has not stated a glass type nor produced a telescope. - posted in Refractors : It remains to be seen what the SV scopes will actually be and whether the entire objective will be tested or just the inner 95% as per a thread a while back. Also the 900mm focal length was still short enough to do some wide viewing (2.7degree true field with my 31mmT5) La première réalisation pratique d'un système asphérique est faite par Bernhard Schmidt en 1930.Il s'agit d'une lentille asphérique (lame de Schmidt) qui permet de compenser les défauts de sphéricité introduits par un télescope.L'ensemble est nommé chambre de Schmidt.De nombreuses évolutions de ce premier modèle ont … That is great!! Advanced CMOS detectors enable next-generation astronomy. I went for a 128mm F8.1 Fluorite doublet - but you cannot buy them new anymore. View all products. Maybe thereâs not a whole lot of difference. 210mm backfocus and a nice R&P. Edited by bobhen, 16 January 2021 - 02:22 PM. 1. F8, These are the details that we know about the TS 125 from their website. As far as what is available current production, are there more than just these? In addition, In a valley, in the UK. Edited by Gofr, 14 January 2021 - 03:18 PM. In fact when people awaiting one of his scopes have asked him what to do in the meantime, heâs even suggested getting a Tak, TEC, etc. If you see one of these used I would recommend it. Sky-Watcher EvoStar 120 -- $1925 -- f/7.5 -- FPL53, William Optics ZenithStar 126 -- $2198 -- f/7.7 -- FPL53 (not sure if this is now discontinued or not), Astro-Tech AT125EDL -- $1649 -- f/7.8 -- FCD100ED and Lanthanum, Altair Wave Series 125 EDF -- $1937 -- f/7.8 -- FPL53 (do not think available from US distributor). Apparently they are doing many aspects of the scope in house and trying to get everything just right. Use of doublets and triplets. If you see one of these used I would recommend it. CFF also does in house work on their glass, and tubes. Several functions may not work. Apo Doublet the â TS uses FPL53 â SV will have to incorporate FPL53 or FPL55 or the Chinese equivalent in order to get the color correction needed at F8.3. 1. The very small difference can just be marketing in order to differentiate. In a valley, in the UK. That's fair. Or just proud of what he does? Formed over 100 million years ago, the Australian Opal captures the essence of natural beauty. And out of that 11, only ONE was 99% Sterhl. New mount coming (CEM70), any tips&tricks for me? Would he, or go the Agema & Takahashi specialist doublet path, perhaps less likely if he has a bias against doublets. The WO is marketed 126 mm, because WO does that -sometimes. DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging, Community Forum Software by IP.BoardLicensed to: Cloudy Nights. Hi Tyson - I am not up to speed with SV offerings. Had Roland the resources and materials Canon has, could he make great doublets? Page 2 of 3 - 120-130 ED Doublet Apos? My understanding is that Covid-19 slowed down a lot of the parts in the pipeline. The topic is 120-130 mm doublets NOT whether Stellarvue's specs are plausible or whether they make their own optics. Roland set out to change that and along the way, he designed and manufactured the Christen triplets which used a variety of non-ED glasses to correct the color. You currently have javascript disabled. An axoneme is the microtubule-based cytoskeletal structure that forms the core of a cilium or flagellum.
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