I managed to process 12 Has, 16 OIIIs and 20 SIIs, each at 15 minutes long - there was some variability within the data, but I decided to use them all, creating an imaging time of 12 hours. Pier 12 uses a 12.5 inch F/9 Ritchey Chretien telescope from RCOS.
Have a good Sunday everyone.
Simon