tried NGC 2371 again (Halifax)

With the Burke-Gaffney Observatory, I imaged NGC 2371 or the Gemini Nebula again. First imaged this planetary nebula on 27 Apr '16. Imaged again on 1 Nov '17 with oxygen and hydrogen filters.

Luminance only, 60 seconds subexposures, 10 stacked shots. FITS Liberator, GIMP. North is up; east is left.

The luminance from 2016 was rather good. This seems comparable.

O-III, 60 seconds subexposures, 10 stacked shots. FITS Liberator, GIMP. North is up; east is left.

Hydrogen-α, 60 seconds subexposures, 10 stacked shots. FITS Liberator, GIMP. North is up; east is left.

I think the results with the oxygen and hydrogen are better than 2017. Perhaps because there was no moonlight.