I tried to image the Jellyfish nebula in 2021 but could never get more than a faint glimpse of the "cap." In narrowband, it jumps right out. This is from just about 4 hours of data from one night of imaging. I'm not used to dealing with such detailed structure so I processed it as best as I can but am open to any advice, tips, or pointers. The red nebula up top is part of the same structure and is designed IC444. The nebula itself is IC443.

William Optics Redcat 71
ZWO ASI294MM Pro in hi-res Bin 1 (8k x 5k)
Astronomik filters (LRGBSHO)

AstroPixel Processor to stack
PxInsight to process