Home > Telescopes > William Optics
(Details shown apply to the default selection)
Model: wo_gt81_iii_tgPart Number: A-F81GTIVTG
FLO tests all William Optics triplet refractor telescopes before dispatch.
You can be confident your telescope will, from the outset, 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!
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)
This is a superb piece of triplet, with medium reach. Great scope for most of the nebulas and few of the galaxies. With the flattener, the stars are round corner to corner. Luckily, I got the red one, which nicely matches with ZWO environment and GEM28. As usual, all the advice given by Alex prior to purchase regarding backfocus, attaching the camera and so on. 5 stars for the scope and FLO. I would give 6 for Alex. Cheers.
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 © 2021