roman_pointing documentation

roman_pointing includes basic utilities to compute Roman observatory pointing angles, specifically the sun angle (angle between the unit vector pointing from the observatory to the target and the unit vector pointing from the observatory and the sun), along with the pitch and yaw settings such that the observatory boresight points at the target.

The observatory orientation zero-point is such that the pitch angle will be the same as values computed for OS11. The yaw, angle, however, will be different. If the observatory is placed exactly at L2, then the yaw will be equal to the OS11 value plus 180 degrees.

The Jupyter notebook in the Notebooks folder demonstrates how to use these utilities.

To install the backend, clone or download the GitHub repository, navigate to the top-level directory of the repository (the one containing file pyproject.toml) and run:

pip install .

Contents:

• Notational Conventions
• Nancy Grace Roman Observatory Pointing Angles
  • Reference Frame Definitions
  • Pointing Angle Definitions
  • Zero-point Definition
  • Target Pointing
• roman_pointing
  • roman_pointing package

Indices and tables

• Index

• Module Index

• Search Page