I'm excited to finally try my hand at mono and pleased with the result; though posting an SHO Carina after the splendid one Rodney has posted here it's a tough act to follow!
After the last year using a series of OSC colour cameras and the optolong light pollution filters my first foray into Mono is via the new-ish ZWO ASI294mm and a set on Antlia Narrowband 3.5nm SHO filters and ZWO filter wheel. Took a while to get eveyrthing setup but finally managed around 6 hours last night with ~ 2hours on each filter with 300s expsoures. This is using my APM 130 and the riccardi 0.75x so ~585mm fl.
Stacked and processed in APP with just some minor tweaking in PS. I am impressed with how much can be done with narrowband in APP. I'll process this also later in Startools using the linear stacks from APP but happy with this for a first go, new camera, new filters, new processing etc. Amazing what can be captured in narrowband in a light polluted city with a full moon!
In APP I loaded SII as red, Ha as Green and OIII as blue but also then added SII and OIII as green as well... seems to produce a better SHO colour balance as a starting point. Basic colour APP gradient and star colour processing and HSL selective colour.
High res on astrobin link below
https://astrob.in/5pkch9/0/