If you are tired of trying to invert things in your mind and staring at upside down stuff;this SVBONY 90-Deg Zenith Mirror could turn your refracting telescope into a scope It can be used to observe objects on earth with comfortable angle image;it's convenient to look at the zenith of the sky and close to horizontal observation 1.25" 90 degree angle mirror: Using with refractor telescope;the image is upright;though left and right reversed;not affect viewing celestial bodies Standard 1.25” diameter: Fit for 1.25” telescope eyepiece and telescope focuser Wide 90 degree refraction angle: View correct image from refractor telescope stand and just look down with a comfortable angle Body material: Plastic and metal;fully optical glass lens;provide clear and sharp image