[casstony]

The central cluster here is ngc 2671 and Gum 15 is the brighter red nebula. It's on the edge of the Vela SNR and there's some green gas in the lower left corner.

I didn't know if the green remnants would show up so I might give the Pencil nebula a try (ngc 2736).

30x5min unmodded d5600, TS72