While imaging the Cassiopeia mosaic, myself and Olly found a Ha signal below the Gamma Cass IC 59 and IC63 nebulae. We thought this was worth some further investigation!
As a result, we ended up collecting 51 hours of data in a two panel mosaic with the Dual Tak set up. We took 24 hours of Ha data over the two panels, which showed a weak single continuing from the IC nebulae around Gamma Cass.
After processing the image, the nebula appeared to be of the same structure. Olly coined the name Breaking Wave, which I hope sticks. We have not seen this extended Ha signal imaged before, so this was a great discovery too!