Late processing of Herschel's NGC 6946. Taken at the Okie-Tex 2019 star party this past September. Excellent seeing with good guiding with the external guider not working then so the object was not centered. Got the external guider option working after the star party. It was a darned odd Windows 10 thing! The 18" F/4.5 Newtonian with the ST-2000XM CCD camera described below. 40 min Ha, 30 min L, 20 min RGB, 5 min subs. One of the better shots with my long FL, fast optics. The guide star was tiny and survived the filter changes including Ha. Herschel H76-4, Caldwell C12.
Joe
