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Telescope comparisons, setup, and stargazing guidance.

Telescope OS

Find telescope buying guides, comparisons, and advice on telescope types, optics, magnification, setup, and stargazing to help you choose and use a telescope.

Latest guides

  • ZWO Seestar S30 Pro Smart Telescope
    Telescope Guide

    Best Telescopes for Solar Viewing

    Compare telescopes and a solar filter for solar viewing by their stated features, fit and intended use. Learn what to check before viewing the Sun.

  • EISCO 6pc Optical Lens Set
    Telescope Optics

    How to Use a Telescope Field of View Calculator

    Use a telescope field of view calculator to frame targets, compare eyepieces, and check camera coverage with the right focal length and sensor size.

  • Blue Marble NASA Lunar Telescope for Kids Ages
    Magnification And Viewing

    How to Use a Telescope to See the Moon

    Learn how to use a telescope to see the Moon, focus on craters, choose magnification, and plan a first lunar session with clear, realistic expectations.

  • Sky-Watcher Sky-Watcher Heritage 130mm Tabletop Dobsonian 5-inch
    Telescope Guide

    How to Choose a 10-Inch Dobsonian Telescope

    Compare a 10-inch Dobsonian’s aperture, tube design, tracking, storage and transport needs to decide if this telescope size fits your observing habits.

  • SVBONY SV48P Telescope for Adults High Powered
    Telescope Types

    SVBONY SV48P 102mm Telescope Review

    This SVBONY SV48P 102mm telescope review covers its achromatic optics, wide-field design, focuser and mounting needs to help you judge its fit.

  • Celestron PowerSeeker 127EQ Reflector Telescope for Home
    Telescope Types

    Best Reflector Telescopes for Adults

    Compare the best reflector telescopes for adults astronomy, with 114mm to 150mm apertures, equatorial mounts and practical notes on setup and care.

  • Explore Scientific Focal Extender Barlow Lens
    Telescope Guide

    Best Long Focal Length Telescopes

    Compare telescopes and accessories for long focal length viewing, with picks for lunar and planetary detail, eyepiece flexibility and optical setup.

  • Sky-Watcher Sky-Watcher Heritage 130mm Tabletop Dobsonian 5-inch
    Telescope Types

    Best Dobsonian Reflector Telescopes

    Compare Dobsonian reflector telescopes by aperture, portability and setup style. Find a tabletop pick, a larger mirror and alternatives for visual astronomy.