very large data files

Eduardo Robles Elvira edulix at
Fri Jul 11 10:11:02 BST 2008

El Jueves 10 Julio 2008, Jason Harris escribió:
> How big a file is acceptable to distribute via GHNS?  75MB, 750MB,  
> 7.5GB?  None of these?
> How big a file is acceptable to host on for download?
> People seem interested in a streaming solution a la OpenStreetMaps,  
> but for now I want to think about distributing the entire catalog,  
> because I think it would be annoying to have to wait for the stars to  
> appear every time I reposition the display, and I do not want to  
> require a live network connection.

I'm not an admin of GHNS so I don't know what is acceptable there. But if you 
use a cache then when you reposition to somewhere you already have been it 
would read the stars file from your hard disk. Also I think you could have 
both posibilities: downloading all the starts from somewhere (I also think 
that it might be a good idea to download it from NOMAD), and also downloading 

> It's possible that we'll eventually do a hybrid solution (e.g., the  
> brightest 1 million stars are stored locally for immediate access, and  
> anything fainter is streamed over the net).  But for now I just need  
> to know at what point a file is too large for our standard  
> distribution methods (GHNS and

"The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all progress
depends on the unreasonable man." (George Bernard Shaw)
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