M 51, also known as the Tourbillon galaxy (Whirlpool Galaxy in English) is a couple of galaxies located around 27.4 million light years in the constellation of Hunting dogs.
This famous couple is composed of a regular spiral galaxy massive whose diameter is estimated at 100 000 light years and a small irregular galaxy .
Spring star, it is one of the most famous galaxies of astrophotographers, with very pronounced colors and presenting beautiful nebulae, accentuated here by the joint use of a Halpha Hydrogen filter.
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Articles (image processing, techniques, instruments, software ...) :
Les bases de Photoshop en 3 videos de 20mn sur ma chaine Youtube :
Noise reduction (Pixinsight / Photoshop)
Managing gradients with Pixinsight
Import your local sky into Stellarium
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- the AIP association (Astro Image Processing)
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- the Light Vortex Astronomy site for Pixinsight tutorials
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- tutorials and articles from the Photon Millenium site by Jean-Baptiste Auroux
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- Valentin Cohas' Youtube channel for Photoshop & Pixinsight tutorials
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- the Astropixaa Youtube channel for Pixinsight tutorials
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Some external resources ... :