@observerly/astrometry
Version:
observerly's lightweight, zero-dependency, type safe astrometry library written in Typescript for calculating the position of celestial objects in the sky.
20 lines (19 loc) • 1.09 kB
TypeScript
/*****************************************************************************************************************/
/*****************************************************************************************************************/
import type { HorizontalCoordinate } from './common';
/*****************************************************************************************************************/
/**
*
* getAirmassPickering()
*
* Airmass is a measure of the amount of air along the line of sight when observing a star
* or other celestial source from below Earth's atmosphere. It is formulated
* as the integral of air density along the light ray.
*
* @see Pickering, K. A. (2002). "The Southern Limits of the Ancient Star Catalog" (PDF). DIO. 12 (1): 20-39.
* @param target - The horizontal coordinate of the observed object.
* @returns The airmass of the object.
*
*/
export declare const getAirmassPickering: (target: HorizontalCoordinate) => number;
/*****************************************************************************************************************/