Telescope for Kids & Adults 70mm Aperture 400mm AZ Mount Refractor Telescope, Adjustable(17.7in-35.4in) Portable Travel Telescopes with Backpack, Tripod Phone Adapter

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  • Regular price $119.59
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  • 【Useful Magnification】Come with two replaceable 1.25"" Kellner eyepieces(K6mm/67X, K25/16X) , not instead H Erecting Eyepiece ( low-end, has a small field of view, large chromatic aberration, spherical aberration, field curvature, and small astigmatism). In the case of 400mm focal length & 70mm aperture, 16X-67X enough( no need 3x Barlow lens), because you need trade off of magnification vs brightness.
  • 【Excellent Quality Optics】400mm(f/5.7) focal length and 70mm aperture, fully coated optics glass lens create stunning images and protect your eyes. Perfect telescope for astronomers to explore stars and moon. 400x70 refractor scope is a compact and universal telescope with useful magnification power. Suitable for astronomical observations and for terrestrial use

Specifications

Optical Design: Refractor

Aperture: 70mm(2.75in)

Focal Length: 400mm(15.75in)

Resolution: 3 secs

Focal Ratio: F5.7

Finderscope: 5*24

Zenith Mirrors: 45°Erecting prism Diagonal

Diameter of the Eyepiece: 1.25"

Phone Adapter: for any model