Originally shoot a horizontal tiimelapse, picked out 5-6 pictures from the sequence and stacked them. Cropped down to a vertical 5x7. Had to move the mountain a bit in post to get the alignment and the colors in one photo. The comet aligned with the mountain 30 min later in the evening, but then without the orange glow.

Sony a7c + 24-105mm f/4 (105mm, f/4, ISO 1000, 4sec)