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Catalogue and alternative designations IC 4628, Prawn nebula
Type Emission Nebula
Position 16 56 55, -44 30 44
Constellation Scorpius
Camera and Telescope STXL6303 and F9 36.8 cm Ritchey Chretien
Focal Ratio F9
Exposure Details HaLRGB image with Hydrogen Alpha = 300 minutes, Red = Green = Blue = 50 minutes with all binned 1x1. Astrodon and Chroma filters. Synthetic luminance was used. 
Description Visually, this is a fairly large but faint nebula in the tail of Scorpius. It's 90' in diameter and about 6000 light years distant. IC 4628 is often known as the Prawn nebula but you need a wide field to see the prawn shape. Prawn