Klaus R. Brasch, Author at Astronomy.com

The author took this digital color image of the Andromeda Galaxy and its two main satellites with a 5-inch apochromatic refractor, Canon R mirrorless camera, and IDAS LPS 4 filter. The total exposure time was 18 minutes at ISO 4000.

Get to know the Andromeda Galaxy

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Taking the search for life to water worlds

Exoplanets, Planets, Solar System

A brief history of Jupiter’s Galilean moons, and how to observe them

The photographic legacy of Lowell’s Great Refractor