Incoming Comet ATLAS (C/2019 Y4) on March 26, 2020 as shot through a 100mm f/5.8 apo refractor (the SharpStar 100Q) for a field of about 3.5° by 2.5°. A very faint ion tail is visible extending away at 2 o’clock. This is a stack of 8 x 4-minute exposures, median combined, with the Canon EOS Ra at ISO 1600. While the comet did move slightly over the 30 minutes of shooting the median stacking minimized the trailing of the comet image.
The green or cyan Comet PanSTARRS passing above the Double Cluster in Perseus on January 25, 2020. This PanSTARRS (one of many!) is C/2017 T2. The star cluster to the left of the comet is NGC 957. The loose cluster in the bottom left corner is Trumpler 2. This is a stack of 8 x 4-minute exposures at ISO 400 with the Canon EOS Ra on the SharpStar HNT150 Hyperbolic Newtonian astrographic reflector at f/2.8.
The green Comet PanSTARRS passing near the Double Cluster in Perseus on January 22, 2020. This PanSTARRS (one of many!) is C/2017 T2. The star cluster to the left of the comet is NGC 957. The loose cluster at bottom left is Trumpler 2. This is a stack of 8 x 4-minute exposures at ISO 400 with the Canon EOS Ra on the SharpStar HNT150 Hyperbolic Newtonian astrographic reflector at f/2.8.
