3 min read
What is magnitude, and how to interpret the value? To answer this question, first, we have to touch on another...
Artur
An IT network engineer by profession. A passionate diver. Active diving instructor and EFR (Emergency First Response & Secondary Care) instructor. Technical diver TDI Advanced Trimix Open Circuit and X-CCR Normoxic Trimix. Closed-circuit diving enthusiast. Yet also an astrophotographer. After all these years, I'm still a beginner, learning the stuff to do things better.
2 min read
NGC 7023, famously known as the Iris Nebula, is a stunning reflection nebula located approximately 1,300 light-years away in the...
1 min read
NGC 3628, shown on the right, is an unbarred spiral galaxy about 35 million light-years away in the constellation Leo....
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The Pinwheel Galaxy, formally known as Messier 101 (M101), is a massive grand-design spiral galaxy located approximately 21 to 25...
1 min read
NGC 4565, commonly known as the Needle Galaxy, is one of the most striking spiral galaxies in the sky, seen...
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The Galaxy M 106 (also known as NGC 4258) is located approximately 22 to 25 million light-years from Earth. It is...
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The Bortle scale is a system created by John Bortle to measure and categorise sky darkness. He is an amateur...
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...