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Object: Comet C/2016 R2 (PanSTARRS)
Constellation: Taurus
Distance: 2.1796 AU / 326 million km (at time of image)
Date: 19 January 2018
Equipment: SXV-H9, Vixen 114mm f5.3 ED refractor, guiding with Lodestar X2/PHD
Subframes: 30 x 120s luminance, 20 flats, no darks (hot pixel removal in Astroart instead).Equipment: SXV-H9, Vixen 114mm f5.3 ED refractor, guiding with Lodestar X2/PHD
Guiding and stacking using the comet as the reference point has produced trailing stars due to the orbital motion of the comet against the sky background.
Longer exposures through larger apertures (and by far more skilled imagers than I!) evidence much more tail structure than is apparent here.
I could not convince myself that I could actually see the comet through the eyepiece of the ED114, let alone detect the CO-induced blue colouration so evident on long exposure colour images.
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