🌍The ultimate goal is to find an Earth-sized exoplanet in the habitable zone of a sun-like star.
🔭A bigger telescope alone cannot resolve Earth-like exoplanets; a coronagraph is needed.
🌌Chronographs were originally designed to observe the Sun's corona but are now being used for exoplanet imaging.
⚙️Chronographs consist of devices that modify the amplitude and phase of the incoming light.
🌟The challenge is to block the core of the star's light and remove artifacts to detect faint exoplanets.
Why can't we use bigger telescopes to see Earth-like exoplanets?
—A bigger telescope would only make the star's glare brighter and not help in resolving the exoplanet.
What is the purpose of a coronagraph?
—The purpose of a coronagraph is to block the light from the star's core and remove artifacts to detect exoplanets.
Can a coronagraph be used to study other celestial objects?
—Coronagraphs were originally designed to observe the Sun's corona but are now used for exoplanet imaging.
What are some devices used in a coronagraph?
—A coronagraph can include devices like focal plane masks, apodizers, and optically conjugated components.
What is the ultimate goal of exoplanet imaging?
—The ultimate goal is to find Earth-sized exoplanets in the habitable zone of sun-like stars and study their potential for life.
00:00The quest to find another Earth-sized exoplanet in the habitable zone.
03:43Chronographs were originally designed to observe the Sun's corona.
07:24Controlling the amplitude and phase of the light to detect faint exoplanets.
09:04The challenges of blocking the star's core and removing artifacts.
13:58The use of focal plane masks and apodizers in chronographs.
