obsplanYYYYMMDD

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])\.fits

File Type:

FITS, 8-560 KB

Contents

Number

EXTNAME

Type

Contents

HDU0

IMAGE

N/A

HDU1

BINTABLE

List of tiles in plan

FITS Header Units

HDU0

N/A.

Required Header Keywords

KEY

Example Value

Type

Comment

MOONFRAC

0.144870860633956

float

Moon illumination fraction

Empty HDU.

HDU1

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)

Notes and Examples

Status==2 tiles (observed) should not be in this list.