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Model: wo_gt71_ii_gdPart Number: A-F71GTIIIGD
Es Reid is highly regarded in the optical industry so to ensure our William Optics triplet refractors perform at their very best we send them to him for checking and, if necessary, tuning on his optical bench.
You can order your telescope with confidence knowing it will have well figured optics, negligible false colour and spherical aberration, and no astigmatism (the bane of any optical system!). Star shapes will be round, not triangular, oval or egg-shaped!
You know it makes sense :-)
The William Optics GT-71 APO Triplet refractor features a 3-element f/5.9 objective with an Ohara FPL-53 extra-low-dispersion glass element for optimum colour correction and a new upgraded dual-speed 2.5-inch Rack and Pinion focuser with 1:10 Dual Speed.
The William Optics 0.8x focal reducer is also available to reduce the focal-ratio to a fast f4.72.
An excellent choice for astrophotography!
Includes tube rings, carry handle/guider mounting saddle.
390mm Fully Retracted
Quite stunning workmanship everything is really precise the focus system is a joy. This is my first refractor I am more than happy with my purchase which I intend to use in conjunction with my DSLR. Took a few weeks to arrive as one of the ordered parts was not in stock and this virus problem. Never the less it arrived when they said it would and was well packed.