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David Callejas

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January 20, 2019

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David Hoskin
Halifax, Nova Scotia, Canada

02/27/2022
01:37 am

Equipment Details:

William Optics RedCat51 astrograph, ZWO ASI183MC camera with Optolong L-Pro filter, SkyWatcher EQ6R Pro mount

Post-processing Details:

26 4-minute lights plus calibration frames were stacked using ImagesPlus; other post-processing was with Photoshop CS2 plus Astronomy Tools plugin, SiriL, PhotoScape X and MS Photo.

Image Details:

Messier 3, located in the constellation Canes Venatici, is a popular target for astrophotographers. This large, bright globular cluster contains about half a million stars and is 32,600 light years from Earth. With an estimated age of 11.4 billion years, Messier 3 existed long before the formation of our own solar system.

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January 20, 2019

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David Callejas

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About the Author:

David Callejas, Marketing Director, helps bring EarthSky's content to the world via online ads and other products. He creates strategies that help people around the world find us and appreciate the work we do. He helps manage the EarthSky Store and bring to you the new products that you love. He's the chief liaison between EarthSky.org and the world of commerce. All that, plus he helps post content and populate our pages on Facebook, Google+ and Twitter. Go David!