Pointing Correction#

While individual spacecraft align themselves on orbit using star tracker observations, a refined correction using stellar positions must be applied to allow for precise data reprojection and merging later in the pipeline.

Concept#

TODO

Applying correction#

The correction is carried out primarily in the punchbowl.level1.alignment.align_task function:

punchbowl.level1.alignment.align_task(data_object: NDCube, distortion_path: str | None) → NDCube[source]

Determine the pointing of the image and updates the metadata appropriately.

Parameters:

  • data_object (NDCube) – data object to align

  • distortion_path (str | None) – path to a distortion model

Returns:

a modified version of the input with the WCS more accurately determined

Return type:

NDCube

If you wish to incorporate this as a Prefect task in a custom pipeline, using something like the punchbowl.level1.alignment.align_task is recommended.