I managed to collect 1h 18m of data for this target two nights ago. The stars in the final image tended to overwhelm the nebula, so I tried removing the stars using Starnet++, a great piece of software by Nikita Misiura. This worked very well and was reasonably fast on my laptop (~10m). This starless image was then combined with the original image using Gimp 2.10 allowing the nebula to be preferentially stretched. It was then noise reduced with RawTherapee 5.5.
Sh2-132 is apparently illuminated in part by two very hot UV emitting Wolf-Rayet stars (WR 152 and WR 153).
I have attached an annotated version in the following post showing WR 152 and 153 as well as some of the dark nebulae, feel free to correct or add any other objects.
Comments and suggestions for improvement welcome.
Scope: ES ED102-FCD100 at f7 (714mm) with Starfield field flattener
Guide scope: Starfield 60mm with ASI120mm-S
Filter: IDAS NB1 nebula contrast enhancer.
Guiding error ~0.7 arc sec total RMS
Moon 54%, SQM-LU reading 19.8
Exposures, all at gain 200 and -15C:
Lights: 39 x 120s; Darks: 40 x 120s; Flats: 7s with LED pad; Dark flats: 7s.
Integration 1h 18m.
Processing software: DSS, APP, GIMP 2.10, Starnet++ and RawTherapee