21P/Giacobini-Zinner 2018-Oct-20 Chris Schur

This comet continues to be excellent, now moving into Canis Major on the east side. Now beaming softly at 10th magnitude, the tail is still well defined and the coma sporting a magnificent teal coloration. This 40 minute set shows a nice starlike nucleus and some possible rays structure in the tail near the head.

Lens: 10" f/4 Orion Astrograph Newtonian
Platform: Astrophysics AP1200
Exposure: 40m LRGB
Location: Payson, Arizona
Elevation: 5150 ft.
Sky: Seeing 6/10, Transparency 6/10
Outside Temperature: 42F
Processing Tools: Maxim DL, Photoshop CS2