- ln_get_airmass
double ln_get_airmass(double alt, double airmass_scale)
Undocumented in source. Be warned that the author may not have intended to support it.
- ln_get_alt_from_airmass
double ln_get_alt_from_airmass(double X, double airmass_scale)
Undocumented in source. Be warned that the author may not have intended to support it.