William Optics Gran Turismo GT 71 AP Astro Package Red (SKU: A-F71GTII-RD-AP)

In the realm of compact apochromats, the William Optics Gran Turismo GT 71 II in its striking red and white design, accentuated with red elements, effortlessly outshines its competitors in terms of color correction and image sharpness.

At the core of this exceptional telescope lies a three-element APO-ED optics system. The employment of synthetic fluorite, a highly advanced optical material, in the production of the low dispersion lens sets this telescope apart. Manufactured by the renowned Japanese company Ohara and designated as FPL-53, this synthetic fluorite boasts a high Abbe number and remarkable chemical stability compared to its natural crystalline counterpart. To ensure unparalleled sharpness, detail, and contrast, the lenses of the William Optics Gran Turismo GT 71 II are meticulously crafted using carefully selected glass types and coated with SMC coating.

Included in the package is the FLAT 6A III, a dedicated focal reducer and flattener. This triplet, composed of meticulously chosen optical glass by Ohara, enables seamless compatibility with full-frame sensors as well as APS-C and M4/3 formats.

The telescope tube is securely mounted on precisely crafted clamps equipped with a Vixen socket, allowing for the attachment of a finder or guider. Additionally, a Vixen/Arca-Swiss foot is provided for versatile mounting options on a mount or photographic tripod.

Key Features of the William Optics Gran Turismo GT 71 II Telescope:

• Apochromatic triplet with an air gap and a low dispersion element made of Japanese FPL-53 glass (synthetic fluorite).
• Three-element focal reducer/flattener with a 0.8x factor and the ability to mount filters using an M48 threaded frame.
• Sturdy rack & pinion focuser equipped with coarse and fine focus adjustment knobs.
• CNC-machined optical tube clamps.
• Mounting foot compatible with Vixen and Arca-Swiss sockets, enabling easy attachment to a mount or photographic tripod.

Technical Specifications:

• Telescope optical system: APO-ED triplet with air gap.
• Flattener/focal reducer: FLAT 6A III.
• Flattener/focal reducer optical system: Triplet with full multilayer coating (FMC).
• Flattener/focal reducer magnification: 0.8x.
• Lens diameter: 71 mm.
• Focal length (without FLAT 6A III): 419 mm.
• Focal length (with FLAT 6A III): 335 mm.
• Lens (without FLAT 6A III) aperture: f/5.9.
• Lens (with FLAT 6A III) aperture: f/4.7.
• ED lens material: FPL-53 glass (Ohara, Japan).
• Optical system coating: SMC coating.
• Compatible sensor sizes: APS-C, full frame.
• Compatible photo systems (via interchangeable T-rings): Canon EF, Nikon F, Sony E, Pentax, Micro 4/3, Fuji FX.
• Back focus (for FLAT 6A III): 64.1 mm.
• Correction (for FLAT 6A III): 9.1 mm.
• Focuser: 2.5".
• Spectacle lift type: Rack & pinion, dual speed.
• Thread for connecting the flattener/focal reducer: M63.
• Finder foot: Vixen.
• Mounting bracket: Vixen/Arca-Swiss.
• Tube length (folded): 392 mm.
• Tube length (unfolded): 470 mm.
• Tube weight: 2.95 kg.
• Tube finish: White with red accents.

Included Components:

• William Optics Gran Turismo GT 71 II refractor.
• FLAT 6A III focal reducer/flattener with CAA63 rotator.
• Dew shield.
• Bahtinov mask with mount.
• Lens cap.
• Clamps with Vixen/Arca-Swiss foot.
• Transport cover.

Warranty:

This telescope comes with a 24-month guarantee, ensuring peace of mind for your purchase.

Discover the William Optics Gran Turismo GT 71 II and elevate your astrophotography experience with its unrivaled performance and remarkable design.