Comet Lovejoy, C/2014 Q2, in Taurus near the Pleiades star cluster, on Jan 16, 2015. Orion is below, rising above the formations of City of Rocks State Park, New Mexico. Sirius is just clearing the rocks at bottom. The comet’s long ion tail stretches back about 15° into Taurus.
This is a stack of 5 x 2 minute exposures, tracked on the Star Adventurer tracker, with the 24mm lens at f/2.5 and filter-modified Canon 5D MkII at ISO 1600.
The Amazing Sky 