Friday, October 30, 2015

Melotte 15: A star cluster in the Heart Nebula

Image: The open star cluster Melotte 15 is found in the center of IC1805

Exposure: SII (red), Ha (green), OIII (blue), 3x10min. exposures for each channel at 660mm (f/5.2), extra RGB exposures to retrieve the star colors.
Image composition: SII-Hα-OIII for the nebulosity, RGB for the stars, HST composite.
Links: Wikipedia

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