Home > Telescopes > William Optics
(Details shown apply to the default selection)
Model: wo_gt81_iii_gdPart Number: A-F81GTIVGD
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-81 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-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.
(Photo shows earlier model)
Five stars for both the telescope and the service! The GT81 is absolutely fantastic for astrophotography and has the great quality associated with WO gear. Purchasing through FLO gives peace of mind having had the Es Reid optical check and FLO’s service was great as they kept me updated on how the order was progressing and answered queries I had.
First Light Optics LtdUnit 7 Budlake UnitsBudlake RoadMarsh Barton Trading EstateExeter, DevonEX2 8PY
Company No. 5892293VAT No. 907 2895 01
First Light Optics Ltd All rights reserved © 2020