TS-Optics Photoline 70mm f/6 FPL53 Apo Refractor Telescope, TSAPO704

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Teleskop-ServiceLead-managed by Teleskop Service, this high-quality Photoline apo with an FPL53 element from Ohara (Japan) was created. The goal was to construct a compact and powerful telescope which is also attractive for the demanding astrophotographer. For this reason, we have equipped the telescope with a modern 2″ rack and pinion focuser which can hold even heavy accessories like CCD cameras. Despite very good mechanics, the apo is a true lightweight with only 1.85 kg, and with a length of only 31 centimetres, the telescope has space even in the hand luggage. Photography with the Photoline 70mm f/6 apo:The apo has a large back focus of 135 mm from the 2″ receptacle of the focuser. This allows for trouble-free operation of our optional field correctors. A corrector is always necessary for maintaining good sharpness to the edge.TSFLAT2 – Corrector without change of focal length – The corrector leaves the focal length at 420 mm and the focal ratio at f/6. The corrector offers full correction and a good illumination up to full-frame sensors. The optimal working distance from the M48 connecting thread to the camera sensor is 128 mm. With the item TSFLAT2A, we take over the whole work of adaption. You get a ready made solution for your CCD or DSLR camera.TSRED279 – Photoline corrector with focal length reduction – The corrector shortens the focal length of the apo from 420 mm to 331 mm and improves the focal ratio to f/4.74. We recommend the corrector for DSLR cameras up to APS-C sensors and also for CCD cameras with medium sized sensors like the KAF-8300. The optimal working distance from the T2-thread of the reducer to the sensor is 65 mm. Observing with the Photoline 70mm f/6 Apo:The generous working distance of the apo allows even using 2″ eyepieces at full illumination. Thus a gigantic magnification range with high field of view is available to you.By using a 2″ Paragon ED 35 mm eyepice and a 2″ star diagonal, a true field of view of 5.7 degrees can be obtained, at 12x magnification. Observations of animals and the countryside with maximal image brightness even in twilight become as possible as observing extended nebula regions with nebula filters.The 70 mm doublet lens, virtually free from colour aberrations, allows magnifications up to approximately 200x. See fine details of the moons surface or observe the planets of our solar system. The contrast performance of the apo will surprise you in this field, too. TS Photoline 70mm f/6 FPL53 Apo – 2″ R&P focuser For further selection of telescopes and accessories, please visit us in our online shop at  telescope express.check out my other itemsTeleskop-Service is your competent partner for astronomy, photography and landscape observation.
fascination of space and natureSpecifications:  Lens design:      apochromatic doublet with FPL53 elementCoating:               fully multi-coatedAperture:           70 mmFocal length:      420 mmAperture ratio: 1/6Tube material:  AluminiumTube length without rings:         315 mm with retracted dew capTube diameter:                77 mmDew cap diameter:         88.5 mmDew cap type:  retractableTube weight:     1.85 kgFocuser:              2″ rack-and-pinion, dual speed (1/11)Load bearing of focuser:              5 kgClamping:           Compression ring 2″ with 3 knurled screws, 1.25″ with 1 knurled screwWorking distance from the 2″ receptacle:           135 mm with retracted draw tubeTube travel:       73 mm     Delivery:   Photoline Apo 70 mm f/6 High-quality 2″ rack-and-pinion dual speed focuser Reducer 2″ to 1.25″    Top mechanics through the 2″ rack and pinion focuserThe focuser holds accessories up to approx. 5 kg without tilting. The drawtube is adjuted using a rack which is non-interacting with the bearing itself. The 1:11 dual speed transmission offers precise focusing also for astrophotography.A female M54x0.75 thread on the drawtube allows screwed connections.The D=70 mm FPL53 lens:Without doubt, the heart of the refractor is the multi-coated 70mm f/6 objective with the FPL53 APO element from Ohara (Japan). This doublet lens offers an image virtually free of false colour even in the high magnification range.The air-spaced objective is adjustable mounted, of course. For maximum contrast, each lens is supplied with the best possible multi-coating offered by the manufacturer.

Category: Cameras and Photography:Telescopes and Binoculars:Telescopes
Location: Munich – Germany

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