The last couple of days presented great opportunities for astrophotography. Clear, windless nights, coupled with fine winter sky subjects – such as the M31 (and its two companions, M32 and M110).
Taken with the Canon EOS 7D Mark II and the EF 500mm f/4L IS USM lens, mounted on my Astrotrac. This image consists of 16 frames exposed at ISO 1600 for 1 minute each. Well, I was skyfog-limited at 1 minute exposures.