
On Nov. 7, 2018 for just under an hour, SDO viewed a lunar transit, when the Moon partially blocked SDO's view of the Sun. At its peak about 44% of the Sun was covered. In this view, the Sun was observed in extreme ultraviolet light and, as is customary, been given false color. SDO's orbit gives it two three-week periods per year when either the Earth or the Moon cross in front of the Sun. These transits provide scientific value as well: The sharp edge of the lunar limb helps researchers measure how light diffracts around the telescope's optics and filter support grids, allowing scientists to better calibrate their instruments for even sharper images. Movies available at https://photojournal.jpl.nasa.gov/catalog/PIA18142
Most NASA images are in the public domain and free to use. Credit NASA as the source. Check NASA's media usage guidelines for details. Images featuring identifiable individuals may require additional permissions.
NASA ID
PIA18142
Date Created
November 14, 2018
Center
JPL
Media Type
image
Download this image in multiple resolutions. All NASA media are free for public use.
Medium
960px