William Optics Apochromatic refractor AP 81/478 Gran Turismo 81 IV OTA

Product description:

The new 2018 GT81 three-element super APO offer superb quality for imaging and visual use at an affordable price!

From the pristine white finish on the CNC to the elegant trim which has more than just good looks...

Optically Unbeatable

Triplet air-spaced objective (FPL-53) in adjustable CNC machined ultra high precision lens cell

Extremely sharp

Excellent color correction

Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces

Ideal for astrophotography

2.5” R&P-Focuser

Very robust focuser with 1:10 dual speed: a treat to use during astrophotography

No image shifting!

Heavy duty: perfect for your accessories

Simply Beautiful Finish

Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube, gold trim finish, retractable dewshield, dewshield cap

Top quality anodizing

Very compact for carrying on flights

Standard Package:

Mounting Rings, Guiding Rings Dovetail Plate, 2.5” R&P Focuser, innovative Bahtinov Mask Cover (Patented), Soft Carry Case