pointing-1.0.0
Spacecraft Pointing Information
Outline
Schema Definitions ¶
This type is an object with the following properties:
ra_v1
number Required Right Ascension of the Telescope V1 Axis (deg)
The right ascension coordinate of the V1 axis in units of degrees. This may be considered the right ascension coordinate of the telescope boresight. The telescope V coordinate system is defined with its origin at the vertex of the primary mirror. The V1 axis is orthogonal to the primary mirror, parallel to the telescope boresight, and increasing positively through the telescope aperture. See Roman-STScI-000143 “Description of the Roman SIAF and Coordinate Frames” for more information.
dec_v1
number Required Declination of the Telescope V1 Axis (deg)
The declination coordinate of the V1 axis in units of degrees. This may be considered the declination coordinate of the telescope boresight. The telescope V coordinate system is defined with its origin at the vertex of the primary mirror. The +V1 axis is orthogonal to the primary mirror, parallel to the telescope boresight, and increasing positively through the telescope aperture. See Roman-STScI-000143 “Description of the Roman SIAF and Coordinate Frames” for more information.
pa_v3
number Required Position Angle of the Telescope V3 Axis (deg)
The position angle of the V3 axis (in units of degrees) is defined as the projection of the V3 axis on the sky measured from North to East. The telescope V coordinate system is defined with its origin at the vertex of the primary mirror. The +V3 axis is defined to be orthogonal to the sunshield. See Roman-STScI-000143 “Description of the Roman SIAF and Coordinate Frames” for more information.
target_aperture
string Required Aperture Name Used for Pointing
Name of the aperture used to align the instrument to a position on the sky.
Maximum length: 100
target_ra
number Required Right Ascension of the Target Aperture (deg)
Right ascension in units of degrees at the location of the target aperture.
target_dec
number Required Declination of the Target Aperture
Declination in units of degrees at the location of the target aperture.
Original Schema ¶
%YAML 1.1
---
$schema: asdf://stsci.edu/datamodels/roman/schemas/rad_schema-1.0.0
id: asdf://stsci.edu/datamodels/roman/schemas/pointing-1.0.0
title: Spacecraft Pointing Information
type: object
properties:
ra_v1:
title: Right Ascension of the Telescope V1 Axis (deg)
description: |
The right ascension coordinate of the V1 axis in units
of degrees. This may be considered the right ascension
coordinate of the telescope boresight. The telescope V
coordinate system is defined with its origin at the vertex of
the primary mirror. The V1 axis is orthogonal to the primary
mirror, parallel to the telescope boresight, and increasing
positively through the telescope aperture. See
Roman-STScI-000143 "Description of the Roman SIAF and Coordinate
Frames" for more information.
type: number
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: float
destination: [WFIExposure.ra_v1, GuideWindow.ra_v1]
dec_v1:
title: Declination of the Telescope V1 Axis (deg)
description: |
The declination coordinate of the V1 axis in units of
degrees. This may be considered the declination coordinate of
the telescope boresight. The telescope V coordinate system is
defined with its origin at the vertex of the primary mirror. The
+V1 axis is orthogonal to the primary mirror, parallel to the
telescope boresight, and increasing positively through the
telescope aperture. See Roman-STScI-000143 "Description of the
Roman SIAF and Coordinate Frames" for more information.
type: number
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: float
destination: [WFIExposure.dec_v1, GuideWindow.dec_v1]
pa_v3:
title: Position Angle of the Telescope V3 Axis (deg)
description: |
The position angle of the V3 axis (in units of
degrees) is defined as the projection of the V3 axis on the sky
measured from North to East. The telescope V coordinate system
is defined with its origin at the vertex of the primary mirror.
The +V3 axis is defined to be orthogonal to the sunshield. See
Roman-STScI-000143 "Description of the Roman SIAF and Coordinate
Frames" for more information.
type: number
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: float
destination: [WFIExposure.pa_v3, GuideWindow.pa_v3]
target_aperture:
title: Aperture Name Used for Pointing
description: |
Name of the aperture used to align the instrument to a
position on the sky.
type: string
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
maxLength: 100
archive_catalog:
datatype: nvarchar(100)
destination: [WFIExposure.target_aperture, GuideWindow.target_aperture]
target_ra:
title: Right Ascension of the Target Aperture (deg)
description: |
Right ascension in units of degrees at the location of
the target aperture.
type: number
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: float
destination: [WFIExposure.target_ra, GuideWindow.target_ra]
target_dec:
title: Declination of the Target Aperture
description: |
Declination in units of degrees at the location of the
target aperture.
type: number
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: float
destination: [WFIExposure.target_dec, GuideWindow.target_dec]
propertyOrder: [ra_v1, dec_v1, pa_v3, target_aperture, target_ra, target_dec]
flowStyle: block
required: [ra_v1, dec_v1, pa_v3, target_aperture, target_ra, target_dec]