This image was obtained with the wide-field view of the Mosaic camera on the Mayall 4-meter telescope at Kitt Peak National Observatory. MWP1 is a very usually shaped, unusually large, and unusually old, planetary nebulae. The progenitor star is also one of the hottest stars known, so hot it is producing large amounts of X-rays. The image was generated with observations in the Oxygen [OIII] (blue) and Hydrogen-Alpha (orange) filters. In this image, North is up, East is to the left.
T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOIRLab/NSF/AURA)