refraction library

Functions

bennett(double h0) → double

Bennett's formula for refraction (apparent → true).

bennett2(double h0) → double

Bennett's formula with correction. Accurate to 0.015 arcmin.

gt15Apparent(double h) → double

Refraction for true altitude > 15° to get apparent altitude.

gt15True(double h0) → double

Refraction for apparent altitude > 15° to get true altitude.

saemundsson(double h) → double

Saemundsson's formula for refraction (true → apparent).