In this article, I will describe how I modified a Canon 1000D (Rebel XS) DSLR to become a dedicated astronomical camera, with all functions intact including its auto-focus capabilities, and thus, may still be used for non-astronomical purposes. The camera belongs to a fellow astronomy enthusiast and I was happy to accommodate the request to have it modified. It took me around 2 hours to complete the modification.
The modification involves the replacement of the camera’s stock (built-in) filter with a Baader BCF (Baader Conversion Filter). This filter allows greater sensitivity to H-alpha wavelengths emitted by most deep-sky objects, while at the same time eliminate unwanted UV and other IR wavelengths. This filter is necessary for any system that uses lenses in the optical train.
Below are some photos taken during the modification with detailed descriptions of some of the key steps.
Below is a test image taken with the modified camera. More test shots will be posted soon. Clear skies!
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