Biggest project yet with the tandem set up and longest in duration for me. 9 panel mosaic (3x3) of Veil Nebula complex in Cygnus. Taken over June/July with no complete astronomical darkness (typically imaging from 11:30pm to 2:30am during nautical darkness). Tried to take 20 minute frames for narrowband using the G4 whilst the ASI2600 took RGB in 5 minute intervals, moving to the next panel and repeating. Voyager worked flawlessly throughout .
Aligning, merging and processing 1GB individual mosaic files (and masks) was a challenge!
Although I managed to capture 2hrs per panel in Ha, weather only allowed 1hr or so for OIII which is noticeably noisier. I am happy I managed to complete this project though - and that is over!
See link above for information and for native resolution versions.