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Hoshi Stars星

The stars you can see without a telescope, with names, colours and distances; the 88 constellations with their lines and boundaries; the Messier objects; and seven map projections to draw them on.

Hoshi is the Japanese word 星 for a star. About the name

Contents

Reference · What you can see tonight: the stars above the horizon of a place and a moment that the Sun's light, the sky's darkness and the air still let through, with the twilight, each star's altitude and azimuth and how easy it is to see

SKY_LIMITSconstant

The naked-eye limiting magnitude of each preset, at the zenith with the Sun well down: round figures of our own, each near the naked-eye limits of the Bortle classes it stands for: a city centre (classes 8 to 9), a suburb (6 to 7), a country site (4 to 5) and a dark site (2 to 3).

Import it

import { SKY_LIMITS } from "@johnmorrisdotca/hoshi-stars/tonight";

Definition

const SKY_LIMITS: Readonly<Record<"dark" | "city" | "suburb" | "rural", number>> = { city: 4, suburb: 5, rural: 6, dark: 6.5 }

Members

NameTypeDescription
darknumber
citynumber
suburbnumber
ruralnumber

Examples

import { SKY_LIMITS } from "@johnmorrisdotca/hoshi-stars/tonight";

console.log(SKY_LIMITS.city, SKY_LIMITS.dark); // 4 6.5
4 6.5

What it prints (run when this page was built)

View sourceEdit on GitHubMade from the source of @johnmorrisdotca/hoshi-stars 0.47.0.