3 ms·
My best guess is that those are near very bright foreground stars, which cause artifacts in the corresponding imaging survey. DESI Legacy Imaging Surveys is use
by jwuphysics 5y ago
My best guess is that those are near very bright foreground stars, which cause artifacts in the corresponding imaging survey. DESI Legacy Imaging Surveys is used to pre-select targets for spectroscopic observations. If you go to legacysurvey.org/viewer you can see some of the bright stars and the kinds of issues they can cause.