ObsMetadata

class lsst.ts.imsim.ObsMetadata(ra: float, dec: float, band: str, rotator_angle: float = 0.0, exp_time: float = 30.0, mjd: float = 60115.33, seq_num: int = 1, raw_seeing: int = 0.5, obs_id: str = '$f"IM_P_{astropy.time.Time(mjd, format=\'mjd\').strftime(\'%Y%m%d\')}_{seqnum:06d}" ', focus_z: float = 0.0, group_id: str = '1')

Bases: object

Class for storing observation metadata.

Attributes Summary

exp_time
focus_z
group_id
mjd
obs_id
raw_seeing
rotator_angle
seq_num

Methods Summary

calc_alt_az()	Calculate the alt and az angles so we can accurately populate the imsim configuration.
calc_parallactic_angle()	Calculate the parallactic angle so we know the sky rotation angle on alt-az mount for the observation.
calc_zenith_angle()	Calculate the zenith angle so we can accurately populate the imsim configuration.
format_observation_info()	Get the observation info in the data structures needed to calculate observer information such as parallactic angle and zenith angle.

Attributes Documentation

exp_time: float = 30.0

focus_z: float = 0.0

group_id: str = '1'

mjd: float = 60115.33

obs_id: str = '$f"IM_P_{astropy.time.Time(mjd, format=\'mjd\').strftime(\'%Y%m%d\')}_{seqnum:06d}" '

raw_seeing: int = 0.5

rotator_angle: float = 0.0

seq_num: int = 1

Methods Documentation

calc_alt_az() → float

Calculate the alt and az angles so we can accurately populate the imsim configuration.

Parameters

obs_metadatalsst.ts.imsim.ObsMetadata

ObsMetadata dataclass object with observation information.

Returns

float

Altitude Angle in degrees.

float

Azimuth Angle in degrees.

calc_parallactic_angle() → float

Calculate the parallactic angle so we know the sky rotation angle on alt-az mount for the observation.

Parameters

obs_metadatalsst.ts.imsim.ObsMetadata

ObsMetadata dataclass object with observation information.

Returns

float

Parallactic Angle in degrees.

calc_zenith_angle() → float

Calculate the zenith angle so we can accurately populate the imsim configuration.

Parameters

obs_metadatalsst.ts.imsim.ObsMetadata

ObsMetadata dataclass object with observation information.

Returns

float

Zenith Angle in degrees.

format_observation_info() -> (<class 'astroplan.observer.Observer'>, <module 'astropy.time' from '/opt/lsst/software/stack/conda/envs/lsst-scipipe-9.0.0/lib/python3.11/site-packages/astropy/time/__init__.py'>, <module 'astropy.coordinates' from '/opt/lsst/software/stack/conda/envs/lsst-scipipe-9.0.0/lib/python3.11/site-packages/astropy/coordinates/__init__.py'>)

Get the observation info in the data structures needed to calculate observer information such as parallactic angle and zenith angle.

Parameters

obs_metadatalsst.ts.imsim.ObsMetadata

ObsMetadata dataclass object with observation information.

Returns

Observer

astroplan.Observer for observer located at Rubin Observatory

astropy.time

Observation time

astropy.coordinates

Observation boresight