My first narrowband picture, taken with the ASI1600mm that I bought here on IceInSpace from jahnpahwa
Larger, non-JPG version here:
https://astrob.in/ciphub/0/
Meade LX90 8", 0.62x reducer
ZWO ASI1600mm pro, ZWO Ha/SII/OIII filters
Total integration time: 8.5hrs, all subs 180s long
SII - 3.5hrs
Ha - 3.3hrs
OIII - 1.7hrs (took much more, but the moon washed it out)
Darks, Flats, DarkFlats
Stacked in AstroPixelProcessor, processed in Pixinsight
Bortle 6 skies, 88% moon