William Optics Gran Turismo 81 mm f/5.9 Apo with FPL53 Triplet Lens

The William Optics GT 81 apo stands for optimal chromatic correction and best possible contrast - a powerful travel telescope for observation and photography.

♦ Aperture 81 mm

♦ Focal length 480 mm

♦ Focal ratio f/5.9

♦ Multicoated FPL53 triplet lens with air gap

♦ 2.5" RAP focuser with M63x1 connection thread, as well as 2" and 1.25

♦ Multifunction handle with holder for guide scopes

♦ Bahtinov mask integrated

♦ Variable carrier bag

♦ Vixen/EQ5 style dovetail bar

 

William Optics Apochromatic Refractor 81 mm f/5.9 Gran Turismo

The compact yet powerful 81 mm Gran Turismo refractor with the FPL53 triplet lens stands for best chromatic correction. Due to high-quality mechanics the refractor can be used in many ways.

The Gran Turismo is ideally suited for mobile use. With a weight of only 3.5 kg, the refractor can be mounted on portable mounts such as the EQ5 Synscan or even on the iOptron Skyguider. Even good photo tripods are suitable for landscape observation.

-- The carrying handle is a real multi-functional part. It facilitates the mounting of the apo on the tripod. At the same time, the handle also offers connection possibilities for mini guide scopes or finder scopes.

-- Visual observation: The refractor allows magnifications of up to about 230x with color-clear images. You can use 2" and 1.25" diagonals and thus have a magnification range from 20x to 230x available. Everything is possible from large field observation to the observation of details in the moon craters.

-- For astrophotography and landscape photography the 0.8x Reducer and Corrector P-Flat6AIII is an optimal additional part. The corrector improves the aperture ratio to f/4.72 and offers a very good correction right into the corners, even with full frame format. The working distance from the M48 thread is 55 mm. A specially calculated Bahtinov mask for precise focusing is included.

 

Type:	APO refractor
Aperture:	81 mm
Focal length:	480 mm
Focal ratio:	f/5.9
Lens:	Air-spaced triplet design
APO element:	FPL53
Tube weight:	3.5 kg
Tube length:	460 mm
Lens hoods:	yes
Focuser:	Dual-speed 2.5" RAP
Connection eyepiece side:	1.25", 2" and M63x1 female thread
Connection OTA / focuser:	M86x1 female thread in OTA
Dovetail bar:	Vixen/EQ5 style
Carrying handle:	yes

In the box:
♦ William Optics Gran Turismo apo
♦ Carrying handle
♦ Dovetail bar
♦ Bahtinov mask
♦ Dust protection caps
♦ Carrying bag