Detail of Gum Nebula

This photo shows the faint red emission of the Gum Nebula above the mountains in Coromandel, New Zealand. The nebula is extremely large and very dim, but long-exposure imaging can reveal parts of its structure.
The green band near the horizon is natural airglow.
The sky and foreground were photographed on the same night from the same spot, with the sky taken on a tracked exposure and the landscape untracked. The image reflects the scene as it appeared that night.

Gear:
Sony A7IVa
Sony 85mm 1.8
Move Shoot Move

Panorama:
Sky 4 panels
3x75s F2.5 ISO2000 | 1x Cokin P830

Ha 4 panels
2x180s F1.8 ISO2000

FG 3 panels
F2 180s ISO 1600

Processed with Sequator, PT Gui, Auriga Registar (to register H-alpha), and Photoshop.