... :Super wide angle,high index glasses,Fully broadband multi-coating. SWA 32mm Telescope eyepieces: Prod. Code :BGWA32Focal Length(mm) :32Lens Structure ... (mm) :24Barrel(in) 2Field stop(mm):40.0 FEATURES of SWA 32mm Telescope eyepieces:Super wide angle 70 degrees, high index ...