NGC 4216 is an intermediate spiral galaxy located not far from the center of the Virgo Cluster of galaxies, roughly 55 million light-years away. It was discovered by William Herschel on...
Although I have no experience with processing narrowband images, I'm very happy with this result.
SII: 8x300s
Ha: 8x300s
OIII: 7x300s
Total Integration Time: 115' or 1hr55mins.