The Helix Nebula (NGC 7293)

HO-HOO (6nm narrow band filters)

Bin1x1 Ha:3h52, OIII:2h56mn exposure time

200/1000 mm Newtonian telescope

Camera ZWO ASI1600MM Pro

Guiding with AOG and ZWO ASI1174MM mini camera using PHD2

Automatic acquisitions with APT

Preprocessing with SIRIL

Image processing with Photoshop

Final touch with Lightroom

Done