Optical Detectors for the Discovery of Transiting Exoplanets (Post by Andor Technology)

The transit method is currently one of the most successful indirect techniques to detect extrasolar planets. To date, over 3800 exoplanets were discovered, from which the majority was found using the transit method. This technique is based on observations of a planet passing in front of its host star (= transit), as seen from an observer on Earth. The planet in transit blocks a fraction of the stellar light and thus causes the stellar brightness to decrease periodically. This periodic dimming of the stellar light is measured in terms of a transit light curve.

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