The powerful lens is popular especially among astrophotographers, so we decided to offer this Apo with the big 3.7" RPA focuser. The temperature compensated cell keeps the lenses free of stress even in temperatures below 0 ☌. The 130 mm f/7 triplet Apo refractor is equipped with one of the best lenses in its class, including a proven Ohara FPL53 element. +++ Bino friendly with no GPC needed - mind you mine had the 2" FTF- not sure how the standard focuser is, my Mark V bino from 3.5-25mm Parks Gold Ep's would all reach focus with the exception of the 35mm.Īll 2" EP's in mono came to focus no problem.Įdited by balu01, 23 March 2019 - 02:28 AM.With the Photoline APO series, Teleskop-Service stands for non-compromised optical and mechanical quality. Add a Solid Carbon tripod, with a proper photo head or a light Alt-Az head and you have a hard to beat combo. Also a 12x18圆 hard case packing a 2" diagonal and 3-4 2" EP's a Powermate and the TS80 inside. While others encourage you to go doublet, and I love mine myself, in this aperture class, you can grab a very well corrected scope with the TS80F6 stay very compact and light, the cell weighs nothing so no issues on being front heavy or anything at all. TS is great to deal with and they throw in a candy or two, just so you have something to help you drool over your new scope. I could crank it as far as my eyeballs took me. I had lots of great views, and had way better figure than my Cff92 behind the eyepiece, or photographically. shipping is fast packaging is first class. I had the TS80 F6 photoline with the 2” feather touch. It's the mount, more than the scope at those sizes that complicates transport. I also have to note that wrt observing on a whim, there is no difference whatsoever in ease of transport getting outside with my 60mm, 80mm, 85mm and 106mm scopes, if I use my travel mount. But don't proliferate the myth that a triplet is visual overkill. If time-to-thermal-stability is all you care about, be my guest. However, further, this all has nothing to do with the myth that a triplet is overkill for visual use, as though there are no visual advantages to the triplet. It may take somewhat longer in a place with real winter but at 80mm the difference is not significance. Both of my 80mm triplets stabilize in well under 30 minutes going from 72° to 38° in our winter. It's not so much that triplets are "overkill", they are just not as convenient as doublets. I agree that the color correction of triplets for visual is not overkill, but you can get excellent correction in a doublet that will acclimate much quicker and be easier to transport, which is conducive to visual observing on a whim. If you don't have a lot of time and you didn't think to or literally couldn't put a scope out an hour before you want to go outside, then fast thermal acclimation is a boon, and triplets will not acclimate quickly. A 120mm triplet like a TSA-120 is going to take a lot longer to acclimate than a 120mm doublet like the SW120ED. You can't step outside with a 90mm triplet and expect to get good performance within the first 30 minutes, but with a doublet I would hope that it would take no longer than 30 minutes to fully acclimate, with good images after 15 minutes. The weight and thermal penalties you pay are detrimental to "quick and easy" observing. But you don't have to be a camera sensor to see the difference. Now, one might decide the cost difference isn't worth it. Overkill for what? Look through a doublet and triplet executed to the same level and tell me you don't see a difference. Not that many very fine doublets don't exist, but it baffles me where this idea that a triplet is overkill for visual comes from. >.For purely visual, a triplet is generally overkill.although there are a few threads that would suggest otherwise.<<
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