Roman Survey Scale (IMAGE)
Caption
This graphic compares the relative sizes of the synthetic image (inset, outlined in orange), the whole area astronomers simulated (the square in the upper-middle outlined in green), and the size of the complete future survey astronomers will conduct (the large square in the lower-left outlined in blue). The background, from the Digitized Sky Survey, illustrates how much sky area each region covers. The synthetic image covers about as much sky as a full moon, and the future Roman survey will cover much more area than the Big Dipper. While it would take the Hubble Space Telescope or James Webb Space Telescope around a thousand years to image an area as large as the future survey, Roman will do it in just over seven months.
Credit
NASA’s Goddard Space Flight Center and M. Troxel
Usage Restrictions
No restrictions.
License
Public Domain