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As Mars gets higher in early dawn, Antares emerges up from the horizon to join it. They'll pass each other by a wide 5° at their conjunction on January 18th.

Photographer:

Jon Greif

Email:

greif.jon@gmail.com

Location of Photo:

Mayhill, NM , USA, remotely from Emeryville, CA, USA

Date/Time of photo:

Over 3 nights in early December, 2019

Equipment:

Planewave 431 mm CDK Imaging Platform, Narrowband filters (Ha, Sii, Oiii), Pixinsight 1.8.8

Description:

NGC 281, also known as "The Pacman Nebula," for its resemblance to the video game character, is located in the constellation Cassiopeia, and was discovered in 1883 by E. E. Barnard, who described it as “a large faint nebula, very diffuse.” It's located 9200 lightyears away, and is 42 lightyears across. This image was taken remotely last week over 3 nights from the iTelescope.net site in Mayhill NM using narrowband filters (Sii, Ha and Oiii) and processed in Hubble Palette (http://little-piney-observatory.blogspot.com/…/creating-hub…) using PixInsight software. Narrowband filters are useful in astrophotography by allowing the image taker to enhance the contrast of emitting objects by only accepting a small range of wavelengths around particular emission lines.

Website:

http://skyandtelescope.org/author/jgreif/

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