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David Callejas

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January 20, 2019

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David Hoskin
Halifax, Nova Scotia, Canada

01/29/2022
02:30 am

Equipment Details:

WO RedCat51 astrograph, ZWO ASI183MC camera with L-Pro filter, SkyWatcher EQ6R Pro mount. 22 4-minute lights (guided) plus calibration frames were stacked using ImagesPlus; other post-processing with Photoshop CS2 plus Astronomy Tools plugin, StarNet++ and MS Photo.

Post-processing Details:

30 4-minute lights (guided) plus calibration frames were stacked using ImagesPlus; other post-processing with Photoshop CS2 plus Astronomy Tools plugin, PhotoScape X, StarNet++ and MS Photo.

Image Details:

Markarian's Chain consists of more than 8 different galaxies from the Virgo Galaxy Cluster that are arranged in a curved line. The Chain contains M84 and M86, which are large, bright lenticular galaxies belonging to the Messier catalogue, as well as NGC 4435 and NGC 4438, which are interacting galaxies sometimes called Markarian's Eyes. Benjamin Markarian was an Armenian astrophysicist who discovered that at least 7 members of the chain move coherently.

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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!