Having finished work on narrowband imaging of the Bubble and Jellyfish nebulas I am now moving on to M100 with LRGB filters. The key difference here is more light and shorter exposures. I tried to get lots of data so that I could use only the best and get good SNR. Good SNR will hopefully enable deconvolution - my big quest these days is high resolution. Collecting the data yesterday I found that it amounted to eight nights and more than 1000 files incl. calibration frames!