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Messier 43 (NGC 1982) is an emission nebula surrounding the irregular young "nebula variable" NU Orionis. The star is ionising the gas that is near it -- making a sphere of glowing hydrogen gas. If it were not for M42 being so close this would be one of the highlights of the winter sky.
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20 minutes in Hydrogen Alpha using Takahashi Ritchey Chrétien 300 with ABG ST8XE. Digital Development (DDP) via Maxim/DL was used in order to display the the very dim and very bright details of the image simultaneously.
Combination of 3 images - 4 x 60 seconds in red, green and blue. Digital Development (DDP) via Maxim/DL was used in order to display the the very dim and very bright details of the image simultaneously.
In collaboration with the Remote Astronomical Society Observatory
Martin Nicholson - Daventry, United Kingdom.
This page was last updated on November 27th 2007.