Vixen A80Mf AC 80/910 Advanced Polaris AP-SM Starbook One

Description

Equipped with motorized right-ascension tracking and a STAR BOOK ONE controller, the Vixen A80Mf AC 80/910 Advanced Polaris AP-SM Starbook One is a computerized equatorial refractor telescope outfit built for hands-free observation. Featuring an 80mm (3.15 in) clear aperture and an f/11.4 focal ratio with a 910mm focal length, this telescope delivers a 1.45 arcseconds theoretical resolving power and reaches magnitude 11.3, tracking lunar features, planetary discs, and double stars across extended sessions.

The optical system features an air-spaced Fraunhofer achromatic doublet objective fabricated from precision annealed Japanese crown and flint optical glass, treated with multi-coated anti-reflection layers with an unobstructed 0% central profile. Built inside an aluminum chassis measuring 860mm in length with a 90mm outer tube diameter, the tube assembly supplies a 44mm full-frame visual and photographic field. Supported by a 1.25-inch rack-and-pinion focuser with an integrated T-2 camera thread, this 3.30 kg (7.28 lbs) optical tube mounts to an included Advanced Polaris AP-SM motorized equatorial mount with an R.A. stepper motor module, STAR BOOK ONE hand controller, and APP-TL130 tripod for a total system weight of approximately 11.8 kg.

Key Features of Vixen A80Mf AC 80/910 Advanced Polaris AP-SM Starbook One

Engineered for high-magnification planetary observation and planetary video imaging, this 80mm refractor couples Japanese glass with an automated right-ascension tracking drive. The STAR BOOK ONE controller, friction slip-clutch system, APP-TL130 compact tripod, and complete visual accessories provide an automated observing platform.

• 80mm (3.15 in) clear aperture with 910mm focal length and high-contrast f/11.4 optical speed
• Air-spaced Fraunhofer achromatic doublet made from precision annealed Japanese optical glass
• Multi-coated optical surfaces delivering high light transmission with 0% central obstruction
• 1.25-inch rack-and-pinion focuser with integrated external T-2 thread for camera adapters
• Advanced Polaris AP-SM equatorial mount with integrated right-ascension stepper motor module
• STAR BOOK ONE multi-function hand controller offering adjustable tracking and slewing speeds
• Compact APP-TL130 aluminum tripod with accessory tray providing rigid field stability
• Optical 6×30 finderscope, 1.25-inch erect-image prism, and NPL 20mm and 6.3mm eyepieces included

Multi-Coated Japanese Optics & Optical Transmission

The f/11.4 focal ratio minimizes secondary spectrum chromatic fringing, delivering clean contrast on lunar craters and planetary disks without requiring complex optical corrector cells. Annealed Japanese crown and flint glasses preserve optical wavefront accuracy, supporting practical visual magnifications from 11.4x up to 160x.

STAR BOOK ONE Hand Controller & Stepper Motor Tracking

Hands-free sidereal tracking compensates continuously for Earth’s rotation, keeping targets centered in the eyepiece field for high-magnification viewing or planetary video capture. The STAR BOOK ONE controller provides multiple slewing speeds, backlash compensation, and autoguider port connectivity, while the friction slip-clutch allows manual re-pointing at any moment without damaging motor gears.

• Right-ascension stepper motor module delivering smooth sidereal tracking without image drift
• STAR BOOK ONE controller featuring multi-speed slewing, solar/lunar rates, and autoguider input
• Slip-clutch mechanism allowing manual pointing by hand without disengaging motor drive gears

Vixen AP-SM Motorized System Five-Year Warranty

The Vixen A80Mf AC 80/910 Advanced Polaris AP-SM Starbook One is backed by a 5-year limited warranty against material and manufacturing defects. The complete factory package contains the A80Mf refractor OTA, AP mount head with RA motor module, STAR BOOK ONE multi-function controller, APP-TL130 tripod, 1.0 kg counterweight, 6×30 finderscope, 1.25-inch erect-image prism, and NPL 20mm and NPL 6.3mm eyepieces.