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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 · The faint stars: about 3 million of UCAC4's, to magnitude 12, in sky tiles loaded for the part of the sky you show

faintTileBoundsfunction

The sky a tile covers: right ascension and declination from and to, in degrees.

Import it

import { faintTileBounds } from "@johnmorrisdotca/hoshi-stars/faint";

Definition

function faintTileBounds(tile: FaintTileId): { raFrom: number; raTo: number; decFrom: number; decTo: number; }

Parameters

NameTypeDescription
tileFaintTileId

The tile.

Returns

{ raFrom: number; raTo: number; decFrom: number; decTo: number; }

Its edges.

Examples

import { faintTileBounds } from "@johnmorrisdotca/hoshi-stars/faint";

console.log(faintTileBounds({ level: 0, band: 9, column: 0 })); // { raFrom: 0, raTo: 10, decFrom: 0, decTo: 10 }
{ raFrom: 0, raTo: 10, decFrom: 0, decTo: 10 }

What it prints (run when this page was built)

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