Henize 2-104 - also named as Southern Crab Nebula in the constellation Centaurus is a relatively dim 14.5 magnitude nebula that subtends a visual diameter of only 5 arcsec for the bright core, but shows very dim extended complex filamentary structure.
In 1989, this apparent PN was identified as a symbiotic nebula around the symbiotic star V852 Centauri.
A detailed investigation on this object can be found here.
Image data: Ha OIII RGB (280-280-120-120-120 min) total 15.3 h, north is up, seeing 0.8-1.2 arc-sec,
80cm f/7 Astrooptik Keller cassegrain, FLI PL-16803, Astrodon Gen2 filters, Prompt 7 CTIO Chile
Processing: Johannes Schedler