3 Light Echoes from the Cassiopeia A Supernova (IMAGE)
Caption
Three light echoes from the Cas A supernova are shown here in three rows. For each row, the left panel is a reference image while the middle panel shows the same field of view at a later time. Right panels show the difference between the two previous shots, highlighting the (changing) light echo. The position and size of the spectroscopy slit is indicated by the rectangular overlay. For all images, north is up and east is to the left.
Credit
CfA/KPNO
Usage Restrictions
None
License
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