NGC 7293 Helix Nebula
This was composed of 70 x 5min frames at ISO 3200 for an integration time of 5hrs+50min, using the Nikon D7500, Optolong L-eXtreme filter plus the associated calibration frames, Telescope was the Evostar 80ED and Vixen SXD2 mount.
Cambridge Ontario, November 2021.