Hi Mike/Trish
The nebulosity that you're referring to is Gum 85 and was the last of 85 H-alpha regions mapped by Australian astronomer Colin Gum as part of his PHd thesis back in the mid 1950's.
An image of it taken by the Gemini South telescope can be found here:
https://www.aao.gov.au/itso/outreach/GeminiContest
If you're interested please contact me via a PM and I can provide you with the rest of the details!
Paul