Positive image optical viewfinder provides stargazers with a bright; clear image through the viewfinder for easy aiming anywhere in the sky 6x30 metal star finder; SV182 viewfinder with 6x magnification and 30mm diameter lens collects enough light to make telescope aiming easy and fun An achromatic 2-element lens design; SV182 viewfinder has fully multi-coated achromatic viewfinder optics to effectively eliminate aberrations and chromatic aberrations Easy to use; with metal viewfinder bracket; 2 plastic 90 degree angle adjustment screws and a fixed spring loaded push-pull screw; only 2 screws need to be adjusted to find the target quickly Internal mattebox design; the SV182 viewfinder scope is fully threaded internally to minimise reflections All black mount. All-in-one visual style for comfortable viewing Product Specification Brand: svbony Model No: SV182 Product Type: Straight Orthophoto Stargazer Objective lens effective aperture/MM: 30 Focal length/MM: 120 Magnification: 6x Pupil distance/MM: 15 Diameter of exit pupil/MM: 5 True field of view/°: 7.5 Coating process: FMC Scribing plate type: Brass crosshair Mounting bracket type: X-Y spring type Objective lens structure: 1 set of 2 double glued lenses Matting process: blackened edges Focusing mode: Objective lens thread focusing Viewing Angle: Straight Plane Imaging type: up and down, left and right orthophoto Package Includes: SV182 6x30 positive straight metal finder scope x1 2PCS nylon big head thumbscrews x 1 Metal bracket x1 Dust cover x1 Lens cap x1