William Optics Gran Turismo GT 81 WIFD Red (SKU: T-GT81RD-WIFD)

William Optics Gran Turismo GT 81 WIFD Red - Advanced Apochromatic Telescope for Astrophotography (SKU: T-GT81RD-WIFD)

The William Optics Gran Turismo GT 81 WIFD is a premier compact apochromatic telescope, expertly crafted for astrophotography enthusiasts. Featuring cutting-edge optical technology and a patented internal focusing system, it sets a new benchmark in its class.

Central to this telescope is its superior three-element APO-ED optics. The incorporation of low dispersion lenses using synthetic fluorite, known as FPL-53, ensures optical precision. With its high Abbe number and enhanced chemical stability, it surpasses the performance of natural crystalline fluorite.

The innovative WIFD (William Optics Internal Focus Design) is a standout feature, providing an internal focusing mechanism that ensures perfect linearity even with heavy cameras. This design virtually eliminates the risk of vignetting and is fully compatible with the WO EAF autofocus system, enhancing your astrophotography experience.

For secure mounting, the telescope tube is fitted with precisely engineered clamps and a Vixen socket, facilitating easy attachment of a finder or guider.

Key Features of the William Optics Gran Turismo GT 81 WIFD Telescope:

• Apochromatic Triplet with Air Gap and FPL-53 Low Dispersion Element: Features a three-element APO-ED design with an air gap and FPL-53 glass, delivering outstanding image quality with minimal chromatic aberration.
• Vignetting-Free WIFD Extractor with Internal Focusing: The WIFD extractor eliminates vignetting, ensuring superior performance with large cameras. Compatible with the WO EAF autofocus system.
• Solid Assembly Clamps with CNC Technology: Equipped with durable clamps, manufactured using CNC technology for precision and reliability.
• WO Saddle Bar Handle Finder Mount with Vixen Foot: Includes a WO Saddle Bar Handle finder mount with a Vixen foot for easy installation of accessories.

Technical Specifications:

• Telescope Optical System: APO-ED Triplet with Air Gap
• Lens Diameter: 81 mm
• Focal Length: 478 mm
• Focal Ratio: f/5.9
• Compatible Flatteners: FLAT6AIII 0.8x / FLAT68III 1x (with WIFD adapter)
• ED Lens Material: FPL-53 Glass
• Compatible Cameras: Full-frame, SLR, Mirrorless, CMOS, CCD
• Compatible Photo Systems (via interchangeable T-rings): Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro 4/3, Fuji X
• Focuser Diameter: N/A
• Focuser Type: Internal Focusing (WIFD)
• Tube Length (Folded): 420 mm
• Tube Length (Unfolded): 500 mm
• Tube Weight: 3.3 kg
• Tube Weight (with Mounting Clamps): 4.5 kg
• Tube Finish: Red

Included Set Elements:

• William Optics Gran Turismo GT 81 WIFD Telescope (Red)
• Bahtinov Mask with Mount
• Lens Cap
• Transport Cover

Warranty:

The William Optics Gran Turismo GT 81 WIFD telescope comes with a 24-month warranty, ensuring reliability and peace of mind as you explore the cosmos.