Lagoon Nebula and Trifid Nebula
Messier Catalog: M 8 and M20
Constellation: Sagittarius


This pair of Nebulae consist of interstallar dust lit by the embedded blue super-giant stars and hydrogen gas glowing in the deep red of ionized hydrogen, the so-called H-a-line.

The low altitute of the southern constellation is a challenge for all central European amateur astronomers and impairs the colour balance. Elaborate digital post-processing was necessary to remove the gradual change in the background colour from the upper part of the picture to the lower. Nevertheless, the beautiful overall impression justifies the patience to wait for optimal weather conditions and the effort to do the finishing.


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