To the left is an ESO image of dark nebulous gas and stars that pinpoints the location of the Hubble image on the right. To the right is the Hubble image.

C99 Inset

A wide-field, ground-based image of Caldwell 99 (the Coalsack Nebula) in the lower left shows the location of the protoplanetary nebula imaged by Hubble’s Advanced Camera for Surveys (ACS).

Credits: Ground-based image: European Southern Observatory (ESO)/Y. Beletsky; Hubble image: NASA, ESA, and R. Sahai (Jet Propulsion Laboratory); Processing: Gladys Kober (NASA/Catholic University of America)
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Image CreditGround-based image: European Southern Observatory (ESO)/Y. Beletsky; Hubble image: NASA, ESA, and R. Sahai (Jet Propulsion Laboratory); Processing: Gladys Kober (NASA/Catholic University of America)
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