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Despite this being uncommon in consumer video cameras, it's pretty standard to see this in long-exposure astrophotography setups - not to prevent overheating, b
by nippoo 6y ago
Despite this being uncommon in consumer video cameras, it's pretty standard to see this in long-exposure astrophotography setups - not to prevent overheating, but to reduce sensor noise. Some setups use Peltier or even cryocoolers to get to very low temperatures, but plenty of commercial CCD modules have water-cooling loops built in, eg https://www.atik-cameras.com/product/atik-11000/ https://www.atik-cameras.com/product/atik-11000/
- robin_reala 6y agoHow do you stop condensation on the sensor? Sealed chambers?
- JonathonW 6y agoThat particular model says it uses heater elements to prevent condensation on the outside glass, and a high-efficiency desiccant to prevent condensation internally on the sensor itself.
- minimalc 6y agoYes, I work with CCD and SCMOS cameras and many of our sensors are cooled via Peltier cooling in a vacuum sealed chamber[1]. I have seen condensation on the sensor window due to vacuum failure before. [1] https://andor.oxinst.com/learning/view/article/ultravac https://andor.oxinst.com/learning/view/article/ultravac
- voldacar 6y agoAbout how much does a CCD like that cost?
- bufferoverflow 6y agoHe is not cooling the sensor though. He is cooling the CPU.