"Comet C2013 US10 (Catalina) passing open cluster NGC 5823 on September 7, 2015."
Paul Stewart, CC BY 2.0, via Wikimedia Commons or Flickr: https://flic.kr/p/yhme5b
Comet C/2013 US10 (Catalina) passing open cluster NGC 5823
12 x 60s LRGB WO FLT132 refractor with 0.8x reducer and QSI583wsg cameraFlickr