# Atmospheric differential refraction

## compare_adr_extensions_in_3d_cube

This script computes the correction for differential atmospheric refraction
present in a 3D data cube, by reading the information from two specific
extensions (e.g., `ADRCROSS`, `ADRTHEOR`).

```{include} files/help_numina-compare_adr_extensions_in_3d_cube.md
```

## compute_adr_wavelength

This script calculates the effect of atmospheric refraction, using a predefined
wavelength as reference.

```{include} files/help_numina-compute_adr_wavelength.md
```