K1-4 in Ophiuchus is a small planetary nebula with a central bright inner oval whose major axis is just 45" across.
The outer features around this planetary nebula were discovered in heavily stretched B&W SuperCOSMOS Ha data in January 2015 by the
Galactic
Planetary
Nebula
Halo
Survey (GPNHS) team
As part of this team, my goal for this data collection was to look for and confirm this very faint outer halo or system of outer extensions beyond the bright inner oval.
The outer filaments revealed here extend the size of the nebula to about 2.5 arc min.
This is the first full colour image of this Nebula to verify these faint features and is my first confirmed result as part of the GPNHS team
Capture details are below the images:
Planetary Nebula K1-4 (100% crop)
K1-4 in the golden Ophiuchus star clouds (Full Frame)
Mike