camera temp

[Gavin1234]

What temperature do you guys run your cameras at? Mine is -20 or -22c but that’s just because a guy in a video I watched once was doing that. Is there any specific way to do this?

[cometcatcher (Kevin)]

I run the 183 at -10. All the hot pixels seems to be gone by then, but the lower the better I suppose.

[Imme (Jon)]

Asi 1600......-15

[JA]

Originally Posted by Gavin1234

What temperature do you guys run your cameras at? Mine is -20 or -22c but that’s just because a guy in a video I watched once was doing that. Is there any specific way to do this?

Hello G,
I don't know about a specific way, but A WAY would be to take LONG exposure dark frames at various sensor temperatures and compare them for hot pixel content. You may (or may not) find a temperature below which there is no significant benefit, thereby potentially saving some battery life or reducing the chances of condensation buildup at low sensor temperatures.

Best
JA

[ChrisV (Chris)]

Asi071 pro at -5C. Looking at its data sheet that's where the dark current seems to plateau at a minimum

[xelasnave]

I only guess but I picked -15

Alex

[sil (Steve)]

Originally Posted by JA

Hello G,
I don't know about a specific way, but A WAY would be to take LONG exposure dark frames at various sensor temperatures and compare them for hot pixel content. You may (or may not) find a temperature below which there is no significant benefit, thereby potentially saving some battery life or reducing the chances of condensation buildup at low sensor temperatures.

Best
JA

+1

basically as cold as it needs to be to produce good results. noise will always be there but for multi session consistancy I'd guess sensor temp consistency is more important than just the coldest temps. I also assume over time the noise will change so may in a year you need to go colder to produce same snr

[billdan (Bill)]

What you need to do is set a temperature that you can achieve all year long.

Most cameras provide a -45° delta from ambient. In SE QLD it can still be 30° C at midnight in summer so I can get the camera down to -15°C in summer and I base my darks library at that temp'. Otherwise if you go for -20 or lower you may have to save a set of summer darks at a higher temp' and winter darks at the lower temp'.