//[astronomy](../../../index.md)/[io.github.cosinekitty.astronomy](../index.md)/[Refraction](index.md)

# Refraction

enum [Refraction](index.md) : [Enum](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-enum/index.html)<[Refraction](index.md)> 

Selects whether to correct for atmospheric refraction, and if so, how.

## Entries

| | |
|---|---|
| [None](-none/index.md)<br>[None](-none/index.md)()<br>No atmospheric refraction correction (airless). |
| [Normal](-normal/index.md)<br>[Normal](-normal/index.md)()<br>Recommended correction for standard atmospheric refraction. |
| [JplHor](-jpl-hor/index.md)<br>[JplHor](-jpl-hor/index.md)()<br>Used only for compatibility testing with JPL Horizons online tool. |