Shooting in Hydrogen Alpha. I am finding out that to get a good image (particularly in narrowband) one has to take a LOT of images. Here are a couple for a start. The first is IC1805 the Heart Nebula in Cassiopeia. While a large number of additional images are needed to create a descent stack, we can start to see the detail in the heart IC1805. I also stacked about 15 lights of M57 for some fun. Canon T7 DSLR: 180sec, 800ISO.