11:18:00, Kent Rheborg "A nice refractor. But the focuser is amazingly smooth and precise! Build quality seems excellent overall! " 13:19:28, Ivo Hackman "Because of clouds, couldnt use it enough to rate the optics. Technical InformationTeleskop-Service has collected a lot of helpful information about refractors and provided it in English as a PDF file: Refractors There is no need for an adapter battle.Īstrophotographic results obtained with this telescope on AstrobinHere you can find some astrophotographs made with this telescope model: Link to Astrobin If you use a camera with 55 mm flange focal distance (distance from the connection thread to the sensor), then simply turn the fine adjustment out by 2.6 mm and you have the perfect distance. The working distance from the M48 thread to the sensor is 57.6 mm. The corrector is directly screwed to the M63x1 female thread of the focuser. ♦ TSREDJM63S - 0.8x image field corrector with focal length reduction: The corrector reduces the focal length to 448 mm and improves the focal ratio to f/5.6. If you are using a camera with 55 mm flange focal distance, such as an SLR with T-ring, you will still need a 10 mm M48 extension # TSVF210. The working distance from the M48 connection thread to the camera sensor is 65 mm. The corrector is screwed directly to the M63x1 female thread of the focuser. ♦ TSFlat25DEL - universal 2.5" field corrector without focal length change: The corrector is suitable for all sensors up to full format. We offer the following possibilites, the correctors are linked in the "recommended accessories" section: ♦ High-quality CNC rings and GP style dovetail bar with photo threadĪstrophotography with the TSAPO80F7The Photoline SD-APO 80 mm f/7 is suited for astrophotography without any restrictions, but, as with every fast refractor, the field has to be corrected for obtaining perfectly round stars at the edge. ♦ Multi-coated state-of-the-art two element lens with FPL53 as APO element and lanthanum glass as second element ♦ The dew shield can be retracted - then, the transportation length is only 46 centimetres ♦ M63x1 thread (female) allows for firmly screwed adaptions for astrophotography ♦ High-quality tube with internal baffles and very good internal blackening - nodisturbing stray light ♦ 1:10 dual speed transmission for ultra-precise focusing ♦ Oversized draw tube with 60 mm clear aperture for full illumination even at full-frame format. The bearing is decoupled from the adjustment of the draw tube. ♦ Ball bearing mounted focuser with rack and pinion drive. This is not the case for the Photoline 80 mm f/7 apochromat. Here, savings are often made at the wrong end. Through the doublet lens, a faster cooling is achieved, too.īest mechanics ensure an outstanding imaging performance for years and success in astrophotographyEven the best optics can only be successfully used if the machanics is right. This high-quality apo element and the relaxed focal ratio of f/7 allow for an image virtually free of chromatic aberration. In the lens, the "extra low dispersion" glass FPL53 from Ohara (Japan) is used, combined with lanthanum glass. The imaging quality sets standard in this class. TS Photoline 80 mm f/7 FPL53 Doublet Apo RefractorThe Photoline apo from TS-Optics offers a very good performance in virtually every area of observation and astrophotography.
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