API Reference / refractTrueToApparent · function
Function: refractTrueToApparent()
function refractTrueToApparent(
altDeg,
pressure?,
tempC?): number;
Saemundsson refraction, degrees. Returns the input unchanged when even the refracted altitude stays below the horizon (matches Swiss Ephemeris).
Parameters
| Parameter | Type | Default value |
|---|---|---|
altDeg | number | undefined |
pressure | number | 1013.25 |
tempC | number | 15.0 |
Returns
number