OBSCON

OBSCON designates the observational conditions (or “layer”) in which targets will be observed. Possible values include “dark” and “bright” for dark-time and bright-time targets, respectively.

Under each observing condition, secondary targets are stored in files that resemble {BITNAME}.fits, where BITNAME is the name of the secondary targeting bit used by the desitarget pipeline for a given survey phase (see the desitarget GitHub repository for, e.g. the sv1 or main secondary target bitmasks).

• {bitname}.fits: output secondary targeting catalog