Celestron StarSense Explorer LT127 AZ Telescope has reinvented the manual telescope with StarSense Explorer-the first telescope that uses your smartphone to analyze the night sky and calculate its position in real time. StarSense Explorer is ideal for beginners thanks to the app’s user-friendly interface and detailed tutorials. It’s like having your own personal tour guide of the night sky. StarSense Explorer uses patented technology and your smartphone to determine exactly where the telescope is pointed in the night sky. A Lost in Space Algorithm (LISA), like the ones satellites use in orbit to correctly orient themselves, helps the app match star patterns it detects overhead to its internal database. StarSense Explorer LT’s simple altazimuth mount makes it easy to move the telescope to find your target. An altitude slow motion adjustment with a sliding rod helps you fine tune the telescope’s pointing position and follow targets as they appear to drift across the night sky. It’s all anchored by an adjustable, full-height tripod. With a large 127mm (5") objective lens, this telescope has enough light gathering ability to bring out detail in celestial objects. Specification: Optical Design: Newtonian Reflector; Aperture: 127mm (5"); Focal Length: 1000mm (39.3"); Focal Ratio: f/7.87; Focal Length of Eyepiece 1: 25mm (0.98"); Magnification of Eyepiece 1: 40x; Focal Length of Eyepiece 2: 10mm (0.39"); Magnification of Eyepiece 2: 100x; Barlow Lens: 2x (1.25"); Finderscope: StarPointer red dot finderscope; Optical Tube: Steel; Highest Useful Magnification: 300x; Lowest Useful Magnification: 18x; Limiting Stellar Magnitude: 13; Resolution (Rayleigh): 1.1 arc seconds; Resolution (Dawes): .91 arc seconds; Light Gathering Power (Compared to human eye): 329x; Secondary Mirror Obstruction: 41mm (1.6"); Secondary Mirror Obstruction by Diameter: 32 percent ; Secondary Mirror Obstruction by Area: 10 percent ; Optical Coatings: Glass mirrors coated with aluminum and SiO2.
