DR7.1 update to sweeps files
BRIGHTSTARINBLOB was not initially included in the DR7 sweeps
files. In addition, the
GAIA_DUPLICATED_SOURCE column in the DR7 sweeps files
was initially included as type int8 rather than being passed through as a
boolean from the Tractor files. The DR7.1 sweeps files were provided as an
update to rectify these issues.
Smaller subsets of files of random points
On August 23, 2018, the
randoms-dr7.fits file initially supplied with DR7
was split into smaller files in a dedicated
randoms directory for ease of use.
DR1 and DR2 coadd files have been deprecated
Spurious extended sources exist across brick boundaries
In DR7, sources in a blob that touched a bright star were forced to
BRIGHTSTARINBLOB column was set for these sources. However, sources for
which the blob crossed brick boundaries were not forced to
type=PSF. This is
illustrated in the figure below, where objects labeled
extended sources that lie across a brick boundary that touches a bright star.