Vixen | Producer of optics from astronomical telescopes and binoculars
Vixen Telescope PORTA II-A80Mf
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Most used alt-azimuth mount by beginners to professionals.
Featuring excellent rigidity, stability, and portability, the popular PORTA II alt-azimuth mount is chosen and used by a great number of users from amarture to professional. Using the supplied erect image diagonal, you can observe terrestrial landscape in daytime and you can shoot moon using optional accessories.
Vixen Telescope PORTA II-A80Mf Description
Slow motion handles
The whole-circle slow motion movement of the PORTA II provides smooth telescope operation at every pointing angle. Handle positions of both vertical and horizontal slow motion controls can be altered in 45-degree increments. This allows a comfortable posture while using the slow motion handles for various size optical tubes.
With Vixen's renowened dovetail-plate system, many optical tubes, up to 160mm in outer diameter, can easily be swapped on and off the mount.
An accessory tray holds small pieces such as a camera or eyepieces. Very useful when observing at night.
Compartment for tools
Slow motion handles positions and the amount of friction on the axes are adjusted with tools located in the compartment under the rubber covering. You will always have your tools available.
Detachable tripod system
The mount head and tripod are detachable by single fixing bolt which makes it convenient for transport and storage.
Friction control system
Optical tube can be moved freely by hand and the friction holds its position anwhere you stop it. It allows you to manually point the telescope at target celestial objects you wish to view.
All optical tube units with PORTA II alt-azimuth mount is equipped with finder scope to facilitate pointing the celestial object.
Reolving power / Limiting magnitude
1.45 arc sec. / 11.3
Light gathering power
131x unaided eye
Dimensions / weight
L: 860mm, OD: 90mm, 3.3kg (body 2.5kg)
6x30mm, actual field of view 7 deg.
42mm for T-ring, 31.7mm push fit
Eyepiece (Dia. 31.7mm)
PL20mm (46x), PL6.3mm (144x)
PORTA II alt-azimuth mount
Vertical and horizontal slow motions
Worm and wheel gears with 120-tooth whole-circile movement, with slow motion handles