Hello everyone,
While examining several sky surveys, I noticed a very faint circular emission structure that might be an evolved planetary nebula. The structure appears to be roughly 20–30 arcminutes in diameter and shows a morphology that looks like a large shell.
Some characteristics I observed:
• roughly circular shell (~20–30′)
• appears strongest in OIII-dominated survey imagery
• a very blue star appears close to the geometric center
• no obvious object listed at the location in SIMBAD or the HASH planetary nebula database
Because the structure is extremely faint, confirming it will probably require deep narrowband imaging, especially OIII and Hα. A wide-field setup would likely work best given the size of the object.
If anyone has equipment capable of imaging a target of this size and is interested in helping verify whether the nebula is real, I would greatly appreciate the collaboration.
To avoid accidental duplication before confirmation, I prefer not to post the coordinates publicly yet.
If you are interested in helping, please send me a private message and I will gladly share the location and additional details.
Thank you!
