Transforms

class jwst.lib.set_telescope_pointing.Transforms(m_eci2fgs1: ndarray | None = None, m_eci2gs: ndarray | None = None, m_eci2j: ndarray | Any = None, m_eci2siaf: ndarray | None = None, m_eci2sifov: ndarray | None = None, m_eci2v: ndarray | Any = None, m_fgsx2gs: ndarray | Any = None, m_fgs12sifov: ndarray | None = None, m_gs2gsapp: ndarray | Any = None, m_j2fgs1: ndarray | Any = None, m_sifov_fsm_delta: ndarray | None = None, m_sifov2v: ndarray | None = None, m_v2siaf: ndarray | Any = None, override: object | None = None)

Bases: object

The matrices used in calculation of the M_eci2siaf transformation

Attributes Summary

m_eci2fgs1	ECI to FGS1
m_eci2gs	ECI to Guide Star
m_eci2j	ECI to J-Frame
m_eci2siaf	ECI to SIAF
m_eci2sifov	ECI to SIFOV
m_eci2v	ECI to V
m_fgs12sifov	FGS1 to SIFOV
m_fgsx2gs	FGSX to Guide Stars transformation
m_gs2gsapp	Velocity aberration
m_j2fgs1	J-Frame to FGS1
m_sifov2v	SIFOV to V1
m_sifov_fsm_delta	FSM correction
m_v2siaf	V to SIAF
override	Override values.

Methods Summary

from_asdf(asdf_file)	Create Transforms from AsdfFile
to_asdf()	Serialize to AsdfFile
write_to_asdf(path)	Serialize to a file path

Attributes Documentation

m_eci2fgs1: ndarray | None = None

ECI to FGS1

m_eci2gs: ndarray | None = None

ECI to Guide Star

m_eci2j: ndarray | Any = None

ECI to J-Frame

m_eci2siaf: ndarray | None = None

ECI to SIAF

m_eci2sifov: ndarray | None = None

ECI to SIFOV

m_eci2v: ndarray | Any = None

ECI to V

m_fgs12sifov: ndarray | None = None

FGS1 to SIFOV

m_fgsx2gs: ndarray | Any = None

FGSX to Guide Stars transformation

m_gs2gsapp: ndarray | Any = None

Velocity aberration

m_j2fgs1: ndarray | Any = None

J-Frame to FGS1

m_sifov2v: ndarray | None = None

SIFOV to V1

m_sifov_fsm_delta: ndarray | None = None

FSM correction

m_v2siaf: ndarray | Any = None

V to SIAF

override: object | None = None

Override values. Either another Transforms or dict-like object

Methods Documentation

classmethod from_asdf(asdf_file)

Create Transforms from AsdfFile

Parameters:

asdf_file (Stream-like or asdf.AsdfFile) – The asdf to create from.

Returns:

transforms – The Transforms instance.

Return type:

Transforms

to_asdf()

Serialize to AsdfFile

Returns:

asdf_file – The ASDF serialization.

Return type:

asdf.AsdfFile

Notes

The override transforms are not serialized, since the values of this transform automatically represent what is in the override.

write_to_asdf(path)

Serialize to a file path

Parameters:

path (Stream-like)