ASTRO 4G2     The ASTRO 4G2 is a versatile, highly expandable telescope with numerous optional accessories. It is designed for photography and observations of Terrestrial far-away objects, for astronomical observations and photography of celestial objects.       Product Acessories: Carrying case for telescope Eyepiece holder with diagonal prizm 3 light filters (optional) Lens covers Manual / · Warranty Card Product Features: Portable High quality catadioptric lens Diagonal eyepiece adp & 32 mm plossl eyepiece     Specifications Eyepiece focal distance, mm:     Clear aperture, mm Focal distance, mm F/number Field-of view, m/100m Without mag. doubler 30 (22…54)/(1°…33') 15 (44…110)/(1°…23') 9.4 (70…175)/(52'…21') 100 1000 1/10 42 Angular field of view 2°30' Near focus, m 4 Photo camera thread Attachment M42x1 The mounting attachment thread ¼"