Last night I managed to shot S-II and O-III channels. The signal is extremely weak, but real.

I have never seen this target in HST palette and there is generally very few images of Sh2-129.
This is a large nebula, the field of view is about five degrees wide in the image.
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Details;
-Camera, QHY9 - Optics, Canon EF 200mm f1.8 @ 1.8 - Guiding, QHY5 and PHD-guiding - Platform, LX200 GPS 12" - Exposures, 7x1200s with 7nm H-alpha filter, 5x300s O-III Binned 4x4 and 5x300s S-IIBinned 4x4 . Darks, Flats and Bias frames calibrated.