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The Bortle scale is a system created by John Bortle to measure and categorise sky darkness. He is an amateur...
Year: 2025
4 min read
Harmonic or strain-wave gears have become very popular in the last few years. What is so catchy to attract people...
4 min read
The exposure time is the value (usually expressed in seconds) that indicates how long you would expose a camera sensor...
1 min read
LDN 1373 (Lynds' Catalogue of Dark Nebulae, object 1373) is a dark nebula located in the constellation Cassiopeia. It is...
3 min read
What is light pollution? Light pollution refers to the excessive, misdirected, or obstructive use of artificial outdoor lighting. It's essentially "wasted light"...
2 min read
Astrophotography is the photography or imaging of astronomical objects, celestial events, or specific areas of the night sky. It is...
2 min read
M 31, commonly known as the Andromeda Galaxy, is the closest large spiral galaxy to the Milky Way, located in...
1 min read
The Great Globular Cluster in Hercules, also known as Messier 13 (M13) or NGC 6205, is one of the most...
