If your G3 is a CCD camera then it can absolutely be affected by power supply issues. I had vertical banding in my G3 16200 which I believe was caused by something in my power train, I suspect too low voltage. Maybe test it first before you waste a night of imaging?
In my experience CCD cameras are way more susceptible to power issues than CMOS, some manufacturers more than others.
Thank you Andy. Will do the tests soon. The cleanest solution is a LiFePO4 battery supplying clean ~13-13.5V DC, in case any issues I'll resort to that. Right now I only have a small, 7.2Ah LiFePO4 unit, but that will be plenty for testing reference.
With Lead Acid I expect two possible deal-breakers: too low voltage (might be still OK with a large bank where 5A load means 0.05C) or if a booster applied, noise. Noise can very well cause severe banding as well, saw that with el cheapo CMOS cameras where the cooling and the imaging circuits were not properly separated.
Um, back up. How long has that battery been sitting in the shed? If it hasn't been kept on a proper maintenance cycle (float charging, or similar), it's very likely shot.
Just sitting there unloaded, the battery should be at about 12.8 volts, and it shouldn't drop below 12 until it's been drawn on for a while. That battery is 2x the size of what I use (I have a 55AH AGM), and I don't drop down to 12.0v for hours, even under load.
I'd give it a good full charge and take it to an auto parts place and have them do a load test on it.
Dont you worry, I kept it fully charged . Not used but not neglected either. It's 3 years old now and got a top-up every 2-3 months.
Edited by GTom, 31 August 2023 - 08:03 PM.