Wow, who knew about that halo
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I've heard much about this PN as it seems to be a visual observing challenge and I tried myself many times and gave up. I see now why my light polluted skies & 10" dob did me no favours.
Finding out about that halo is just simply awesome. Please, please go back out there & collect more data! And thank you also for image by Don Goldman, what a knockout! This has been such an education
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edit: Ooops I forgot to add: This DSO is the sole discovery by Sydney astronomer, Walter Gale. Gale crater which Curiosity rover explored on Mars was named after him as he observed & did drawings of Mars & found a number of surface features. Gale also discovered comets but this was his one & only deep sky object.
So it is a rather little special nebula for me. If I could ever get see it grrrrr...! At the time of Cuirosity landing on Mars, I observed Mars that that day & also tried the whole night to find this.
Again Rick, thank you for this.