Comet Neowise: Stacked Image

Stacking a set of comet frames can become a real pain, since the outer solar visitor travels much faster than the stars (not exactly right, because the stars don`t move, but it looks like that because of the rotation of the Earth). So if you stack a set of frames, you either limit your set to a maximum of about 10 min. of total exposure time (before the comet starts blurring), or you use all of your frames and stack one for the stars and one for the comet, and combine them. This option didn`t work out for me this time, so I stacked 10 frames (out of 35), 60 sec. each. One can`t believe, how much more information a stacked image got. I`m using Pixinsight, a processing platform specialized in astrophotography. It got a steep learning curve, to say the least; because of that, I`m more than happy with the outcome. Enjoy!


Single shot from that set, 60 sec., 200mm/2.8, full frame, Polarie, LR only…


Stacked image, 10 x 60 sec., 200mm/2.8, Polarie, PixInsight, Viveza, LR, Stilfser Joch, South Tyrol, 07/19/2020…


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