The Eta Carina region of the Milky Way
Sony a7r,Zeiss FE 55 1.8 at F4
7 x 60 seconds ISO3200 F4 on a Vixen Polarie tracker and at my dark site observatory in NSW Australia. The slightly red background that is a tad streaky is mostly red airglow hence the slight band which is not an artefact.
full exif