A periodic comet with an orbit of 69 years. It's actually reasonably bright, currently in the constellation Lynx, but rather lost in the twilight.
Modified Canon EOS 600D,Carl Zeiss Jena 135mm f/3.5 Sonnar M42 8 x 20-sec exposures at f/4 and ISO 1600 with camera on a Vixen Polarie star tracker.
The frames were stacked on the comet in DeepSkyStacker, with curves adjustment and further noise reduction in post-processing.
The image was also heavily cropped.
full exif