21p 20180810 jpurvis

Comet 21P/Giacobini-Zinner from last night. 16 x 45 second exposures at ISO 800 with a 135mm Samyang f/2 lens at f/2.

Modified Canon 80D camera, Clip-in LPS filter.
AstroTrac TT 320X AG mount. Polar aligned.
Backyard EOS focusing and acquisition control
Light pollution measured at 20.30 magnitude/arcsec2