Telescopes 525 Times Single Tube Astronomical Telescope,60700 Refractor Telescope for Professional Stargazing and Astronomy Beginners,with Aluminum Alloy Tripod

4. Optical system refraction type, objective lens diameter 60mm focal length 900mm limit star 11.4, resolution 1.842 angle seconds. 3. Add 1.5x Mirror can be set 52 times, 84 times, 263 times plus 3x Extender can be set 105 times, 168 times, 525 times 3 times the 5X24 finder mirror, convenient for you to se for targets, so that you can accurately Find and lock the target. 2.1.5x Mirror and 3x Barlow Extender, magnification: 35 times, 56 times, 175 times 5. Eyepiece SR4mm/H12.5mm/H20mml, Finder 5*24 optical magnification, multiple 45/68/72/108/135/216/22, accuracy: 2.31 arc seconds, field of view: 1.2 degrees. 1. Astronomical telescope reflective focal length: 700mm, clear aperture: 60mm. With 3 eyepieces: H20mm, H12.5 and SR4MM, the maximum magnification is 525 times.