Technical Details

Nikon D500. Tokina AT-X 124 AF PRO DX @ 12mm.
21 x 30sec exposures @ f/5.6. ISO400.
3 Legged Thing LEO 2.0 CF Tripod + AirHed Pro Lever. Phottix Nikos remote.

Processed in Lightroom, merged in Startrails. Edited in Photoshop CS6.