My observatory power supply died last night. Not surprising given it is probably 15 years old. So I'm looking to buy another "12v" regulated power supply and although there are lots of options all of them that I have seen have an operating minimum temperature of 0C. It's not unusual for me to see -20C in the winter. Is that something to be concerned about?
Recommendations for a 10A minimum power supply to run mount, camera, dew straps etc (max draw is about 3.5A)?