Melotte 15 in Heart Nebula

Melotte 15 in Heart Nebula



Selected for the Cover of Sky and Telescope’s 2009 Beautiful Universe

Image taken with 3 nm Astrodon OIII, H-a and SII narrowband filters. Star color was added with Astrodon Generation 2 RGB filters. Data taken automatically with CCDAutoPilot4, calibrated in CCDStack and processed in Photoshop CS3. The Hubble palette was used for color mapping

[OIII] = blue, H-a = Green, SII = Red

Image Date: 07/25/2008
Details: Exposure Time: 14.5 hrs Total, 5 hrs OIII and SII, 4 hrs H-a, 12 min each R,G,B
Camera: Apogee  U16M
Telescope: RC Optical  16" f/8.9 Ritchey-Chretien
Mount: Software Bisque  Paramount ME

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