Product parameters:passage diameter: 70mm (2.4 ′ ′)focal length: 300mm.f/4mirror: 90 & # 176;The highest height of the warp and shot platform and aluminum tripod: 38 cmThe maximum magnification of this model: 150 times (focal length of the objective lens/focal length of the eyepiece * several times Barov multiple = maximum magnification)The attachment Contains:Zenith mirror: 90 degree Zenith mirrorEyepiece: H20mm,H6mmFilter: Moon filterTripod: Aluminum tripod with a height of 380 mmOther accessories: Lens inclination adjustment handleInstallation order:The tripod is supported first. Then attach the lens barrel. After the lens barrel is fixed,a viewfinder mirror (with which the target object is first found) is attached to the lens barrel and then the eyepiece is attached (eyepiece 2 is selected 1). After you find the big goal,debug with different eyepieces. Note: Be patient and patient for the first time! The possibility of bad astronomy is very,very slim,not to mention the fact that every telescope we checked before has been rigorously checked.Caveat:Don't look directly into the sun's eye with naked people. Note that the sun uses a solar filter,otherwise it will hurt your eyes.