NGC 4395 is a spiral galaxy with very low surface brightness, located about 15 million light-years from Earth in the constellation Canes Venatici.
NGC 4395 has an active galactic nucleus (AGN) that emits enormous amounts of energy, mainly in the form of high-energy X-rays and gamma rays, and it is classified as a Seyfert galaxy.
Seyfert's galaxies have extremely bright nuclei that emit spectral lines from highly ionized gas. The centres of these galaxies usually contain supermassive black holes, however, NGC 4395 is characterized by having one of the smallest supermassive black holes ever discovered.
The image is an LRGB composite with hydrogen alpha data added according to the method described by Vicent Peris here. It accumulates 18 hours of exposure time.
Click on the image for a full resolution version, or go to the Gallery section for complete exposure details.
Image processing: Pixinsight
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