Location of Photo:
Ward, CO, USA
Date/Time of photo:
Jan 26, 2015, 11 pm.
Canon T2i, Lentar 135 f/1.8 (@2.8), 13 series of (10 frames x 10 sec exposures (about 23 min total). Manual tracking using homemade barn-door mount. Stacked with DeepSkyStacker. Some poor quality frames were discarded.
Asteroid 2004 BL86 passing Beehive Cluster. Each blue dash corresponds to the series of ten 10 sec exposures. Beehive Cluster is in the center of the image.