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Home Telescopes Optical Tube Assemblies SkyWatcher Optical Tubes SkyWatcher Explorer 300PDS Newtonian Reflector OTA
The new Sky-Watcher EXPLORER-300PDS Newtonian Reflector incorporates the same superb mirror-set as the Explorer-300P but with two significant advantages. A Dual-Speed 10:1 ratio focuser is now included for excellent focusing precision. Also the tube length has been slightly shortened to optimise performance for prime-focus photography.Radiant Aluminum Quartz (RAQ) Mirror CoatingPrimary mirror and secondary mirror with Radiant Aluminum Quartz (RAQ) coating providing up to 94% reflectivity with optimal durability and long term performance.
Even better performance for astro-photography and visual use can be achieved when used in combination with Sky-Watcher’s Newtonian coma corrector (Prod.Code 20233)Specifications:• Magnifications (with eyepieces supplied) x53.5• Highest Practical Power (Potential) x610• Diameter of Primary Mirror 305mm• Telescope Focal Length 1500mm (f/4.9)• Eyepieces Supplied 28mm LET (2"/50.8mm)• 9x50 Finderscope• Parabolic Primary Mirror• 2" (50.8mm) Dual-Speed 10:1 Crayford Focuser• 0.5mm Ultra-Thin Secondary Mirror Supports• Supplied with Tube Rings and Losmandy type dovetail bar• 44% more Light-Gathering than 250mm“Compared to our own 250mm f/5 Newtonian reflector, the extra light gathered by the Explorer-300P was obvious. We got impressive views of a wide range of celestial objects. Galaxies such as M65 & M66 in Leo were wonderful, with strong hints of subtle detail along their spiral discs. The nearby galaxy NGC 3628 also stood out well. Nebulae shone against the background sky. M1, the Crab Nebula, showed varying degrees of mottling and scalloped edges – very satisfying indeed. The Orion Nebula, M42-43, was awash with nebulosity and we found we could easily get lost amongst the detail.. At its centre, the Trapezium group of stars sparkled and, at the highest magnifications , we spotted several of its fainter mag. +10 stars, even though the atmosphere wasn’t as steady as we would have liked for such high-magnification views. Detail Explosion: Late into the night we selected the globular cluster M13 from the hand-controller. As it swung into the field of view it was breathtaking, with swarms of stars looking like bees around a honey pot. The view was so good that we noticed a dark feature, commonly known as the Propeller, superimposed on one side of the cluster. It was easily the best view of the cluster we’ve ever had….For crystal clear views of deep space, this is hard to beat!”BBC Sky At Night Magazine (Review of Explorer-300P single-speed version with same mirror set)
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