Full moon but at least a first clerar night in a while so I put my trust into the NBZ filter to block most of the moonlight. I think it did a fairly good job in the 4+4 hours of clear sky I got with my dual-RASA rig before clouds moved in again. This is a faint magnitude 14.7 object but still I am rather pleased with the result.
This likely planetary nebula is about 1000 ly away and is quite old. The white dwarf presumed to be its origin it is not in the center of the nebula and the asymmetry is thought to be caused by interaction with the surrounding interstellar medium, which drags the Ha emission behind and the presence of this medium is quite evident in this wide field image (so an advantage of using the RASA for a nebula that I thought might be a bit small for this set-up). The white dwarf is the small blue star below the reddish star in the center of the blue (Oiii emitting) area.
But it may not be a planetary nebula at all and there is some interesting info here:
https://www.spaceimages.de/en/astrophotos/nebula/sh2-174
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