Re:Stellarium Web: Online Planetarium
by guillaumec on Tuesday September 04, 2018 @01:16AM
(#17906809)
As for the database size consideration, it will most likely be an issue once we start to support queries into the Gaia catalog (about 500GB of data). There are some ways to make it work though.
How are you guys constructing the DB from the catalog? Do you plan to grow it?
Re:Stellarium Web: Online Planetarium
by guillaumec on Tuesday September 04, 2018 @01:41AM
(#17906886)
For Gaia, it would be impossible (or too expensive) to put the whole catalog into a conventional DB. The solution is probably going to be something similar to OpenDAP (https://www.opendap.org/), but I haven't looked much into it myself.
Re:Stellarium Web: Online Planetarium
by SiempreViernes on Tuesday September 04, 2018 @05:03AM
(#17907640)
Any plans on integrating with the Virtual Observatory, or is that too slow to integrate nicely?
For streaming the data with good performances we also have an amazon S3 instance where we store compressed tiles of data. Each tile contains information about objects in a small region of the sky inside a given magnitude range, so when the user zoom in and out, we can download only the tiles of the visible portions of the sky.
That's how we can render the whole Gaia catalog, containing about 1 billion stars. You can try it: zoom in, and you will see the stars being loaded on the fly.