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TV/monitoring cameras are not so good choice for astrophotography. They have limited resolution, usually older CCDs of not so good sensitivity, heavy, requiring good frame grabber and offering limited "compatibility" with astro software and equipement. And really usable TV cameras like Watec WAT-120N with integration that can do much more are priced like dedicated DS cameras (not cheap) and are used in various occultation, meteor showers detectors etc.
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