SCND_DIR¶
SCND_DIR
is the root directory for secondary targets.
The canonical location is $DESI_ROOT/TS/target/secondary
but the
environment variable SCND_DIR
can be set to point anywhere.
Here, TS
is, e.g., public/ets
for DESI early target selection.
Under SCND_DIR
, secondary targets are grouped according to
DESI observational phase. Observational phases include “mainX” for
iterations of the DESI Main Science Survey, “svX” for iterations of
Survey Validation and “cmx” for commissioning, where “X” is an integer.
SCND_DIR
may also contain a directory bespoke
which
includes secondary programs that needed special handling to be
incorporated into DESI observations. The bespoke
directory contains
simple text files with an accompanying README file that describes each
special program.
Finally, SCND_DIR
may include a README file outlining
the general nature of secondary targets.
Subdirectories: