IRIS Movie of the Day
At least once a week a movie of the Sun taken by NASA's Interface Region Imaging Spectrograph (IRIS) is posted by one of the scientists operating the instrument.
Archive | About IMOD | Facebook | YouTube | IRIS Home
17 May 2016
Mercury catches up with the IRIS slit
Credit: IRIS, LMSAL/NASA, Bart De Pontieu
IRIS used a variety of its observing modes to capture Mercury, all aimed at different types of calibration measurements. In this movie we see the convection cells on the surface of the Sun with Mercury (dark disk) slowly but surely catching up to our slit (dark vertical line).