Took this comet shot last month. The anti-tail is barely visible in front of the comet. The comet at the time of the photos (25 shots of 4.02 seconds, total integration 100.5 seconds stacked) was 0.52 AU (Astronomical Units, 1 AU equals the average distance from the Sun to the Earth, in other words the comet was 46,477,905 miles away). The magnitude or brightness of the comet was 3.53 so technically it was visible to the naked eye but it's proximity to the horizon made really hard to see. This photo(s) was taken with my 9.25 inch diameter lens telescope. Bonus Tip: What is an anti-tail? As the comet speeds away from the Sun dust and ice are burned/fanned off the comet and form the coma and tail opposite the sun. Since the tail is formed directly opposite the Sun and now the comet is travelling away from the Sun the remaining dust is still lit up even though the comet has travelled past it in it's orbital plane.
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