When the new Advanced Camera for Surveys was installed on the ESA/NASA Hubble Space Telescope Thursday noon (European time) it replaced the European Space Agency’s Faint Object Camera (FOC). FOC has ...
Observing the image of a faint object that lies close to a star is a demanding task as the object is generally hidden in the glare of the star. Characterising this object, by taking spectra, is an ...
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