Melotte 15
OTA: RCOS (14.5” f/8)
Camera: SBIG STX-16803
Observatory: Deep Sky West
EXPOSURES:
Hydrogen: 13 x 1200 sec
Sulfur: 16 x 1200
Oxygen: 31 x 1200
Total exposure 20 hours
Image Width: ~1/2 deg
Processed by Alex Woronow (2019) PixInsight, StarNet, Matlab, AuroraHDR, Topaz, Gimp
Melotte 15, strictly speaking is a star cluster in the vicinity of the turbulent cloud at the picture’s center. Many of the brightest stars to the upper right of the nebula trend are in that cluster and are young very massive stars. Their strong stellar winds sculpt the gasses in the ridge and well beyond. Melotte 15 sits near the center of a large bubble, whose edges lie well outside of this image. That bubble, IC 1805, often call the Heart Nebula, can be seen here”
www.astrobin.com/386539/. The interior of the bubble has lower gas and dust density than the bubble’s skin. Again, the cause of the evacuation of material in the bubble’s interior may be attributed to the UV radiation pressure and stellar winds from Merlotte 15.
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