Longmore 9 is a complex and rather faint planetary nebula in the constellation Lupus and its structure likely consists of two overlapping shells.
It was discovered in 1977 by Andrew Longmore and also independently discovered by Lubos Kohoutek the same year.
The combined Ha and OIII inverted image barely shows an extremely faint outer halo that was discovered by the Galactic Planetary Nebula Halo Survey (GPNHS) team in January 2015
(Caption by Sakib Rasool).
Ha-OIII-RGB (560-560-120-120-120min), total 24,6 h, Seeing 0.8-1.2 arcsec, North is up;
80cm f/7 Astrooptik Keller corrected cassegrain, FLI Proline 16803, Astrodon Gen2 filters, Prompt 7 CTIO Chile
Processing: Johannes Schedler
Find the combined Ha-OIII-RGB image of the full field below in 35/100 % size , a 100% crop on the nebula
and an inverse H-alpha-OIII full frame view in highest contrast showing the faintest outer halo.