Camera requirements summary
+ You do need stacking software (free, from the Internet)
Another tip: if you keep a UV or skylight filter on your lens to protect it, take it off for astrophotography. Otherwise you are likely to get ghost images of stars due to reflections between the front of the lens and the filter. I once thought I had discovered a comet but it turned out to be a ghost reflection of a bright star. You learn from experience!