This image of comet NEOWISE (C/2020 F3) taken 2020-07-19 UT, shows significant changes from the image taken 2020-07-13. The tail is no longer bifurcated. Instead, it now shows multiple streamer rays. The coma now glows teal-green, due to the gasses carbon monoxide, cyanide, and diatomic carbon being stimulated by ultraviolet sunlight. The blue ion tail can be seen streaming from the nucleus in contrast to the major dust tail.

Celestron Super C8+ with f/6.3 focal reducer/corrector with Canon EOS 20D.

Exposures: Twenty-four x 15 seconds at ISO 800 at f/6.3.