frames/fk4-1.0.0

Represents a FK4 coordinate object from astropy

Outline

• Schema Definitions
• Examples
• Original Schema

Schema Definitions

This node must validate against all of the following:

• baseframe-1.0.0

• This type is an object with the following properties:

  • frame_attributes

    object

    This type is an object with the following properties:

    • equinox

      http://stsci.edu/schemas/asdf/time/time-1.1.0

      Required

    • obstime

      http://stsci.edu/schemas/asdf/time/time-1.1.0

Examples

A FK4 frame without data:

!<tag:astropy.org:astropy/coordinates/frames/fk4-1.0.0>
  frame_attributes:
    equinox: !time/time-1.1.0 {scale: tai, value: B1950.000}
    obstime: !time/time-1.1.0 {scale: tai, value: B1950.000}

A FK4 frame with data:

!<tag:astropy.org:astropy/coordinates/frames/fk4-1.0.0>
  data: !<tag:astropy.org:astropy/coordinates/representation-1.0.0>
    components:
      lat: !<tag:astropy.org:astropy/coordinates/latitude-1.0.0> {unit: !unit/unit-1.0.0 deg,
        value: 10.0}
      lon: !<tag:astropy.org:astropy/coordinates/longitude-1.0.0>
        unit: !unit/unit-1.0.0 deg
        value: 120.0
        wrap_angle: !<tag:astropy.org:astropy/coordinates/angle-1.0.0> {unit: !unit/unit-1.0.0 deg,
          value: 360.0}
    type: UnitSphericalRepresentation
  frame_attributes:
    equinox: !time/time-1.1.0 {scale: tai, value: B1950.000}
    obstime: !time/time-1.1.0 {scale: tai, value: B1950.000}

Original Schema

%YAML 1.1
---
$schema: "http://stsci.edu/schemas/yaml-schema/draft-01"
id: "http://astropy.org/schemas/astropy/coordinates/frames/fk4-1.0.0"

title: |
  Represents a FK4 coordinate object from astropy

examples:
  -
    - A FK4 frame without data
    - asdf-standard-1.5.0
    - |
        !<tag:astropy.org:astropy/coordinates/frames/fk4-1.0.0>
          frame_attributes:
            equinox: !time/time-1.1.0 {scale: tai, value: B1950.000}
            obstime: !time/time-1.1.0 {scale: tai, value: B1950.000}
  -
    - A FK4 frame with data
    - asdf-standard-1.5.0
    - |
        !<tag:astropy.org:astropy/coordinates/frames/fk4-1.0.0>
          data: !<tag:astropy.org:astropy/coordinates/representation-1.0.0>
            components:
              lat: !<tag:astropy.org:astropy/coordinates/latitude-1.0.0> {unit: !unit/unit-1.0.0 deg,
                value: 10.0}
              lon: !<tag:astropy.org:astropy/coordinates/longitude-1.0.0>
                unit: !unit/unit-1.0.0 deg
                value: 120.0
                wrap_angle: !<tag:astropy.org:astropy/coordinates/angle-1.0.0> {unit: !unit/unit-1.0.0 deg,
                  value: 360.0}
            type: UnitSphericalRepresentation
          frame_attributes:
            equinox: !time/time-1.1.0 {scale: tai, value: B1950.000}
            obstime: !time/time-1.1.0 {scale: tai, value: B1950.000}

allOf:
  - $ref: baseframe-1.0.0
  - properties:
      frame_attributes:
        type: object
        properties:
          equinox:
            $ref: "http://stsci.edu/schemas/asdf/time/time-1.1.0"
          obstime:
            $ref: "http://stsci.edu/schemas/asdf/time/time-1.1.0"
        required: [equinox]
...