Comet C/2012 X1 imaged on Dec 28 2013. This image is the result of stacking 6 different luminance exposures, 120 seconds each. Stacking and deconvolution performed with MaxIM DL, final adjustments done with Adobe Photoshop.
C/2012 X1 is currently approaching perihelion, which will be reached on Feb 21 2014. Additional resources: