Comet C/2014 Q2 (Lovejoy) on February 17, 2015.
Yuriy Toropin, CC BY-ND 2.0 via Flickr: https://flic.kr/p/qXGMPk
C/2014 Q2 (Lovejoy), 2015 Feb 17 - 3 frames HDR mosaic
2015 Feb 17, 17:54 - 18:48 UTC Synta/SW 305mm f/4.9 Newton + ASA x0.73 reducer, QSI-583wsg 3 frames mosaic, each is 5 + 20 + 80 + 320 sec HDRFlickr