With incredible resolution, these super bright binoculars show amazing detail for both Astronomical and Land observations. The BT125-A features a pair of 125mm achromatic objective lense at f/6.08 to collect 300% more light than the naked eye. The 45 degree angled eye piece holders provide comfortable viewing. Each eyepiece holder accepts 1.25" eyepieces. The interchangeable eyepieces allow you to change magnification for each individual observing session. Each eyepiece has individual focusing.
This binocular-telescope accepts standard 1.25" format astronomy eyepieces. To determine your magnification, divide the focal length of the telescope (760mm) by the focal length of the eyepiece being used. For example if you purchased the complete unit with the 25mm eyepieces, your magnification will be 35x