Two more clear nights in August allowed for capturing OIII data for the NGC 6888 field, so here comes a bicolor processing.

Details at Astrobin.

Backyard astrophotography in light-polluted Cologne-Dellbrück (SQM 19.8-9)
Skywatcher Esprit 100/550 ED, Skywatcher Flattener, Optolong Ha 7nm / O3 6.5nm, QHY268M
OAG with Lodestar X2
Mount AZ EQ6 GT
Image acquisition: CdC, NINA, PHD2, dithering
Ha: 19 x 600s, O3: 22 x 600s, mode 1, gain 56, offset 10, -5C, 3×20 flats, 50 bias, 20 darks
Data calibration/integration: PixInsight
Image processing: PixInsight, Lightroom