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David Callejas

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January 20, 2019

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David Hoskin
Halifax, Nova Scotia, Canada

03/15/2022
04:30 am

Equipment Details:

Celestron 150mm XLT f/5 reflector, ZWO ASI533MC Pro camera with Optolong L-eNhance filter, SkyWatcher EQ6R Pro mount.

Post-processing Details:

20 8-minute lights plus calibration frames were stacked using ImagesPlus; other post-processing was with Photoshop CS2 plus Astronomy Tools plugin, StarNet++ v2, ImagesPlus, and MS Photo.

Image Details:

The Tulip Nebula (Sharpless 101), imaged last week, is an emission nebula in the constellation Cygnus. The nebula is about 70 light years across and 8,000 light years from Earth. Cygnus X-1, which is one of the strongest X-ray sources in our sky and the location of a black hole, is also in frame.

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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!