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David Callejas

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January 20, 2019

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Graeme White
Wagga Wagga, NSW, Australia

12/29/2021
11:00 pm

Equipment Details:

Image of Comet Leonard taken 29 December from Wagga Wagga, Australia, at about 23:00 local (13:00 UT).

Post-processing Details:

AVI Stripped with Prism to JPGs. Added in Deep Sky Stacker, Photoshop.

Image Details:

Taken with a dedicated camera consisting of a lens that has some spherical aberration, and a small format ZWO mono camera. This combination gives enlarged images for brighter stars and hence a sense of depth to the image. This is a stack of 256 AVI frames with hot and cold pixels removed. Total exposure is about 20 mins. Image scale is 3.8 arcsec per pixel and frame size is 1.34 x 0.88 degrees. At the tip of the comet there is a small pair, the GAIA g magnitude for the fainter is 15.0.

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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!