This is 2h48m (11x480s + 16x300s) of Ha, 2h (15x480s) Oiii, and 2h32m (14x480s + 8x300s) of Sii for a total of 7.3 hours of exposure on the Horsehead region. I calibrated with darks and bias frames, and stacked/processed in Pixinsight. There is a lot of background detail in this field, so I stripped the stars to have it show better.