Noise associated with warm sensor temperatures during long-exposure shots usually has an effect of turning a supposedly black region into noisy and grainy one. In a typical DSLR, thermal noise is further increased since a DSLR’s imaging sensor heats up during exposure, thus, causing its temperature to reach up to 10 deg C above ambient (sensor temperature reaching up to 35 to 40 deg C). By cooling down the sensor, it is possible to eliminate or somehow minimize this thermal noise.

eteny_450D (27)

Filter modified (Baader BCF) and Peltier-cooled Canon 450D

In this project, I will describe how I modified my Canon 450D DSLR to become a dedicated astronomical camera, with all functions intact including the auto-focus capabilities, and thus, may still be used for non-astronomical purposes. Read more.

To view other my other DSLR modification projects, follow the links below:
August 2014 Modified Canon 450D DSLR for Astro-imaging (improved sealed chamber prototype)
March 2014 Modified Canon 450D DSLR for Astro-imaging (sealed chamber prototype)
February 2014 Modified Canon 1000D DSLR (Baader BCF filter replacement)
December 2013 Modified Canon 450D DSLR for Astro-imaging (custom-fabricated lens mount)
November 2013 Modified Canon 450D DSLR for  Astro-imaging (sealed chamber prototype)
February 2013 Modified Canon 450D DSLR for Astro-imaging

For DIY astronomy projects useful for astrophotography, click here.
For tutorials on how to get started with astrophotography, click here.
To visit my astrophoto gallery, click here.
To subscribe to this site, click here.

© Anthony Urbano (Manila, Philippines)