The Sky-Watcher Skymax Maksutov-Cassegrains are the ultimate take-anywhere telescopes. Despite their small dimensions they pack a powerful punch. Their high-resolution, diffraction-limited optical systems are multi-coated to maximize contrast and image sharpness. If you're seeking crisp, contrasty views with high levels of detail, look no further than the Skymax series, Sky-Watcher's premiere line of Maksutov-Cassegrains. Generally regarded as producing a sharper image than Schmidt-Cassegrains, Maksutovs offer astronomers a large visual aperture, high contrast and long focal length in a compact package. These telescopes deliver higher levels of planetary detail due to a focal length that is 5-7 times longer than your average Newtonian or refractor telescope. Skymax Maksutovs feature mirrors constructed of borosilicate, polished and coated with our proprietary Radiant Aluminum Quartz (RAQ) coatings, which produce a remarkable 94% reflectivity. All Maksutovs use a corrector plate to help reduce chromatic aberration, which is then coated using our signature Metallic High-Transmission Coatings (MHTC), producing professional grade optics at an affordable price. The Skymax 150 includes a 2-inch 28mm eyepiece, a 98x50 finderscope, V-style dovetail, and a 2-inch diagonal. Specifications Optical Info Optical Design Mak-Cass Mirror Coatings Radiant Aluminum Quartz (RAQ) coatings with 94% reflectivity Lens Coatings Fully Multi-Coated Glass Type BK7/Borosilicate True Aperture (mm) 151 Primary Aperture (mm) 166 Primary Edge Thickness 12.5mm F/Ratio 12 Focal Length (mm) 1800 Secondary Diameter 47mm Secondary Obstruction (by diameter) 31% Secondary Obstruction by Area 10% Observational Info Dawes Limit 0.77 Rayleigh Limit 0.93 Limiting Mag. 13.4 Minimum Magnification 21 Maximum Magnification 295 Light Gathering (compared to next size down) 40% General Info Focuser Primary Mirror OTA Length (Retract/Ext.) 17.5" OTA Outer Diameter 7.5" OTA Weight (with accessories) 14 Accessories Included Finder 9x50 Finder Included Diagonal 2" Star Diagonal Mounting Accessories V-Rail Included Eyepieces 28 LET
