Vixen 8" VMC200L Modified Cassegrain Telescope
A unique catadioptric optical system, the Vixen VMC200L includes a primary as well as a meniscus corrector right in front of a secondary mirror. This enables light to be corrected twice on the optical path for corrected spherical aberration and field curvature that achieves high quality optical efficiency. The focal ratio for the primary mirror is f/2.5 while the compound optical system is f/9.75. This allows for much more convenient portability than similar competing telescopes. By having the optical corrector before the secondary mirror, the VMC200L bypasses the obligatory corrector plate along with all the dewing issues relating to closed optical tubes.
Another critical feature is the rack and pinion focuser placed behind the primary mirror. This focusing system removes the image shift common with other SCT sytems. This becomes particulary crucial when utilizing high power magnifications for astro-imaging. The image is steady and easy to modify while focusing.
Vixen Porta II Alt-Azimuth Mount
The lightweight alt-az "Porta" mount can be the heart of an exceptionally portable telescope/mount system. The Vixen Portamount II features a newly designed friction system for quickly pointing toward the target and tracking it with the 360° slow-motion controls. No fumbling with clutches or sectional slow-motion controls! Leave the heavy counterweights with the equatorials: simply balance scopes up to 155mm diameter on the altitude axis and start viewing!
The Vixen Porta Mount II comes equipped with two fine adjustment handles for whole circle slow motion in both directions - a necessity when searching for and tracking celestial objects. Or how about adjusting the friction level so the mount simply stays where you put it? In addition, the Vixen Porta is a great mount for terrestrial viewing, too. Its gear drives make it a simple matter to precisely track a planet or a ship on the horizon by just turning the elevation and/or azimuth control handles.
The Porta in this Vixen mount's name stands for "portability"... and with good reason. It weighs only 12 pounds including tripod - yet will support a payload of 20. The “World-Standard” dovetail attachment system on Porta II was developed by Vixen. This allows the Vixen Porta II Mount to accept various dovetail mounted optical tubes and binoculars - making it a splendid travel companion for hikers, birdwatchers, traveling astronomers and more!
Standard Vixen dovetail mounting slot with lock and safety screw is fully Vixen Sphinx and Great Polaris-compatible. Mounting slot removes to reveal ¼"-20 and M8-1.25 threaded holes for custom mounting solutions for your scope, too!. The PortaMount II features switchable slow-motion knobs, tension adjustment and disassembly tools, built-in tool storage bay, tripod tray and aluminum legs.
Vixen Product Number: 58291P2