gfas

The gfas directory contains targets used to guide, focus and align the DESI instrument. GFA targets are stored in files that are grouped by (nested) HEALPixel number in filenames that resemble gfas-hp-{HP}.fits, where HP is the HEALPixel number.

• gfas-hp-{hp}.fits: catalogs of targets for guiding/focusing/aligning