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M13 - Globular Cluster

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M13 - Globular Cluster


Date: 5/30/2005
M13, also called the `Great globular cluster in Hercules', is one of the most prominent and best known globulars of the Northern celestial hemisphere. It was discovered by Edmond Halley in 1714.

At its distance of 25,100 light years, its angular diameter of 20' corresponds to a linear 145 light years - visually, it is perhaps 13' large. It contains several 100,000 stars; Timothy Ferris in his book Galaxies even says "more than a million". Towards its center, stars are about 500 times more concentrated than in the solar neighborhood.

Toronto, Canada
8" LX200GPS @ f/4.5
SBIG ST-8i
Baader Neodymium Sky Glow filter
5x6min summed
CCDSoft, PixInsight, Photoshop

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Melotte 15 (IC1805) SH2-126 / LBN437 M20 The Trifid Nebula DWB111 The Propeller Nebula IC1274 The Cone and Fox Fur Nebula NGC 2264

NGC1499 - The California Nebula M8 - Lagoon Nebula IC443 NGC1977 - The Running Man Nebula Elephant Trunk Veil East

Veil West Horse Head up Close Flame Nebula (NGC2024) Pelican Neck HSO Pelican Neck SHO Bubble Nebula

Pelican Nebula NGC6823 Pickering Triangle M27 M57 Rosette

Horsehead (up close) M42 Region Cone Nebula M1 from Kitt Peak Pelican and North American Nebulae IC5070 - Pelican Nebula in Cygnus

Veil West IC1396 IC 1311 in Cygnus NCG6914 NGC6992 - Network Nebula Butteryfly Nebula

M27 - *True* Colour M106 M33, the Pinwheel galaxy NGC 4565 (The Needle Galaxy) M74 from Kitt Peak NGC6791

M44 M92 M13 - Globular Cluster M3 - Globular Cluster

Astro Garage - Cog in the Machine