Backyard astrophotography in light-polluted Cologne-Dellbrück (SQM 19)
William Optics GT 81 FD 478mm f/5.9, IDAS LPS V4 and P2, TSFlat2, Canon 5D Mark II (a)
Mount AZ EQ6 GT, WO Guiding Scope 50mm f/4, ALccd QHY 5L-II mono
Dithering with BackyardEOS and PHD2
17 x 900s ISO 800 w/LPS V4, no darks
Image processing using DeepSkyStacker, Fitswork, Lightroom, Photoshop, square crop
Using only the red channel, which should be mostly H-alpha