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Concept of scanning imaging device for optical telescopes
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optical astrophotography ; telescope focal plane imaging ; image sensors
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Abstract:
We propose an approach of a focal plane imaging device for a telescope, which is based on spatially-scanned solitary photodetector, and can be used as an alternative to matrix detectors (CMOS or CCD). This approach allows to set efficient sensor size, pixel resolution, sensitivity and recording time on customer demand. Technical feasibility of up to 200 pixel/mm (5000 ppi) spatial resolution for focal field of up to astronomical photographic plate size, with the detection noise- equivalent power of 3 x 10-15 W/√ Hz and the measurement time of ≈ 1 minute per megapixel is justified.