OPEN BOX - Sky-Watcher Quattro 150P 6" Imaging Newtonian - S11205

OPEN BOX - Has been inspected and collimated by our technician and is in perfect working order. Highlights 150mm aperture, 600mm focal length Fast f/4 focal ratio Parabolic bBorosilicate mirrors utilizing Sky-Watcher's proprietary Radiant ™ Aluminum Quartz (RAQ™) coatings designed for imaging with 94% reflectivity 11:1, dual-speed, 2-inch Crayford-style focuser Oversized secondary mirror produces greater illumination for full-frame DSLR and CCD cameras Primary and secondary mirrors are both collimatable Included coma corrector is designed to match the 600mm focal length, ideal for APS-C sensors and smaller Imaging focal ratio with included coma corrector/reducer is f/3.45, focal length is 518mm Includes tube rings, mounting plate, eyepiece adapters, 70° Ultra Wide 22mm eyepiece, coma corrector/reducer, and a 6x30 finder scope The Quattro imaging Newtonian is an affordable, large aperture astrograph, ideal for users searching for a fast-imaging system that will work for both astrophotography and visual astronomy. Boasting a swift f/4 focal ratio, this astrograph can produce an exposure 6x faster than the average 8-inch f/10 Schmidt Cassegrain telescope (or 8.4x faster with the included coma corrector/reducer). Although designed as an imaging optical tube, these Newtonians also produce bright and detailed viewing for visual astronomy. Like all Sky-Watcher reflectors, the Quattro Imaging Newtonian features borosilicate mirrors coated with Sky-Watcher's proprietary Radiant ™ Aluminum Quartz (RAQ™) coatings, producing 94% reflectivity. The tube is constructed with rolled steel, then coated with Sky-Watcher's signature glossy metal-flake Black Diamond finish. The OTA uses an oversized secondary mirror providing greater illumination for DSLRs and CCDs using full-frame sensors, and an included coma corrector/reducer for those who want to take their imaging to the next level. Included with the Quattro Newtonian is a 11:1 dual-speed 2-inch Crayford-style focuser, 1.25 and 2-inch eyepiece adapters, a 6x30 finder scope, tube rings, V-style dovetail plate, a 70° Ultra Wide 22mm eyepiece, and coma corrector/reducer. Specifications SKU S11205 UPC 050234112055 Optical Info Optical Design Newtonian Mirror Coatings Protected Aluminum coatings with 94% reflectivity Glass Type Borosilicate Primary Aperture (mm) 150mm F/Ratio 3.9 Focal Length (mm) 600 Secondary Diameter 64mm Secondary Obstruction (by diameter) 42% Secondary Obstruction by Area 18% Observational Info Dawes Limit 0.77 Rayleigh Limit 0.93 Limiting Mag. 13.36 Minimum Magnification 21x Maximum Magnification 295x Light Gathering (compared to next size down) 40% (compared to 5" telescope) General Info Focuser 2" Dual Speed Crayford OTA Length (Retract/Ext.) 22" OTA Outer Diameter 7.25" OTA Weight (with accessories) 12.6 pounds Accessories Included Finder 6x30 Finder Included Diagonal No Mounting Accessories Mounting Rings/Dovetail Included Eyepieces 22mm 70 degree 1.25" Included Case No Corrector Yes Shipping Weights & Dimensions