Roya Astro
Roya Astro
Sunday, December 24, 2017

Sky Map

view full screen

Sky Map using d3.js

I uploaded a simplified version of my D3 sky map to Github. The complete version is on this page.

There are several, much more complete sky maps, by Olaf Frohn (Armchair Astronautics), and Dominic Ford (, but I wanted to understand how these programs work.

To print detailed maps, I need SVG rather than screen bitmaps, and stars down to magnitude 8 or 9, therefore on-the-fly loading and unloading of star data when panning across the sky.