Attached is a narrowband image using Atik Horizon Mono Camera, 30'' dob on equatorial platform (no guiding). I took HA (20 seconds), OIII (20 seconds) and SII frames (25 seconds). All processing done in Pixinsight and images were combined in 'non-linear' stretched status using Pixelmath in Pixinsight.
This is only my second ever narrow band image of anything and the sky was becoming quite light (nearly dawn).
I must try again on a better night.
David