Summary: Contains the afternoon plan.
Naming Convention: obsplanYYYYMMDD.fits, where YYYYMMDD is the date of the
start of the night of observations.Regex: obsplan20([0-9]{2})(0[1-9]|1[0-2])(0[1-9]|1[0-9]|2[0-9]|3[0-1])\.fitsFile Type: FITS, 8-560 KB
Number
EXTNAME
Type
Contents
HDU0
IMAGE
N/A
HDU1
BINTABLE
List of tiles in plan
FITS Header Units
N/A.
Required Header Keywords
KEY
Example Value
Type
Comment
MOONFRAC
0.144870860633956
float
Moon illumination fraction
Empty HDU.
List of tiles to observe in order of priority.
Required Header Keywords
KEY
Example Value
Type
Comment
NAXIS1
56
int
length of dimension 1
NAXIS2
9607
int
length of dimension 2
Required Data Table Columns
Name
Type
Units
Description
TILEID
int32
DESI tile ID
RA
float64
deg
Right ascencion
DEC
float64
deg
Declination
EBV_MED
float64
Extinction
LSTMIN
float32
deg
Start of LST observing window
LSTMAX
float32
deg
End of LST observing window
MAXEXPLEN
float32
sec
Maximum exposure lenght
PRIORITY
int32
Between 0(high priority) - 10(low priority)
STATUS
int32
0 (unobserved) or 1 (partially observed)
PROGRAM
char[6]
'DARK', 'BRIGHT' or 'GRAY'
OBSCONDITIONS
int16
0 (DARK), 1 (GRAY), 2 (BRIGHT) or 3 (POOR)
Status==2 tiles (observed) should not be in this list.