Triple APOD - August 27, 2024: Triangulum Galaxy by Gabe Sewell All-Star Amateur Astronomy Photo of the Day - Click to Enlarge


Triple APOD - August 27, 2024: Triangulum Galaxy by Gabe Sewell

The Triangulum Galaxy is the third largest member of our local group of galaxies, being the smallest of the three main spiral galaxies (the other two being the Andromeda Galaxy and the Milky Way, our home galaxy). It's home to approximately 40 billion stars, as compared to the roughly 100-400 billion stars in the Milky Way and the ~1 trillion within the Andromeda Galaxy. Also referred to by its Messier catalogue number M33, it contains many very active star-forming regions, showing up in images as regions of very hot blue stars, and red spectral hydrogen emission. M33 is often barely visible to the naked eye under excellent dark skies, making it the most distant permanent object most people can see without a telescope or binoculars. This image is just over 1 hour of 2-minute sub exposures with an unmodified Nikon D850 and a Sky-Watcher Equinox 120ed refractor telescope.
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