The combination of Hα and OIII (CCD) and RGB (DSLR) frames shows Ou 4 and Sharpless 129 together with the central star HR8119.
Fourteen nights in August / September 2016.
Images taken with two setups:
(1) Skywatcher Esprit Apo 80/400 mm with flattener,
(2) TS Apo 60/260 mm with reducer,
Both telescopes on Mesu 200 mount
(1) Nikon D5100a DSLR, ISO 200, 150x300s+71x240s+103x180s; only about 1/3 of these images where used in a RGB mosaic to fit with the narrowband images,
(2) MI G2-8300FW CCD camera @ -25°C , Hα (6nm): 1x1500s+15x1200s; Hα (12nm): 46x900s (16h55m); OIII (12nm): 132x900s (33h00m) Overall exposure time about 60h,
Rhein-Main area, Germany
North is on the right side of the image