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Lonely Speck's DSLR Cooler Boosts Astrophotography

A simple, affordable mod cools a DSLR's sensor. See the night sky like never before.

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The picture is taken in a room. In the foreground of the picture there are people, chairs, desk,...
The picture is taken in a room. In the foreground of the picture there are people, chairs, desk, bottle, backpack, microphone and other objects. In the background it is well.

Lonely Speck's DSLR Cooler Boosts Astrophotography

An innovative astrophotographer, known as 'Lonely Speck', has transformed an old Canon T1i DSLR by adding an external cooler. This modification aims to reduce thermal noise, enhancing images of the night sky.

The astrophotographer, Francisco C, retrofitted the camera with a sub-$20 Peltier cooler (TEC) pressed against the sensor. This device draws heat away, keeping the sensor cool. Without the cooler, the sensor temperature soared from 67°F to 88°F in consecutive shots. However, with the cooler enabled, the sensor temperature remained steady at a cool 67°F. This resulted in a significant improvement, boosting the signal-to-noise ratio by 2.8 times.

The external cooler has proven effective in reducing thermal noise in the old Canon T1i DSLR. By maintaining a steady sensor temperature, it has significantly improved the signal-to-noise ratio, leading to better astrophotography results.

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