05-25-2019 05:10 AM
Hi!
It is known that one of reasons for noise appearing in long exposures is increasing temperature of sensor. This drives me to a question:
Is it true that long exposures will be less noisy in cold nights than warm nights? I mean, comparing more-less +20 Celsius and 0 Celsius. Cold air could serve as a natural cooler 😛
I can't prove it by myself now cuz I only have warm nights 😛
Solved! Go to Solution.
05-25-2019 06:03 AM - edited 05-25-2019 10:38 AM
Yes, this is the reason why many astrophotographers use specialised cameras that have cooling systems on the sensor.
These usually cool the sensor to 0 C or a couple of degrees above. The trouble with an ordinary digital camera is that there is a lot of electronics and the battery close to the sensor and the heat from these will counteract some of the effect of lower air temperatures around the camera.
05-25-2019 06:03 AM - edited 05-25-2019 10:38 AM
Yes, this is the reason why many astrophotographers use specialised cameras that have cooling systems on the sensor.
These usually cool the sensor to 0 C or a couple of degrees above. The trouble with an ordinary digital camera is that there is a lot of electronics and the battery close to the sensor and the heat from these will counteract some of the effect of lower air temperatures around the camera.
05-25-2019 11:00 AM
07-07-2019 12:38 PM - edited 07-18-2019 02:09 PM
@Ray-uk wrote:Yes, this is the reason why many astrophotographers use specialised cameras that have cooling systems on the sensor.
These usually cool the sensor to 0 C or a couple mcdvoice of degrees above. The trouble with an ordinary digital camera is that there is a lot of electronics and the battery close to the sensor and the heat from these will counteract some of the effect of lower air temperatures around the camera.
that's correct
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