Search found 4 matches

by TJ
Fri Jan 28, 2005 9:15 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Policy on saving NSL data
Replies: 10
Views: 11357

Thoughts on data-saving

I wouldn't say I'm against IDE drives, just that whatever system we choose makes sense in terms of scalability and reliability. The problem with IDE isn't the speed or capacity, but rather the limit on number of devices -- namely 4. The system drive takes one spot, leaving 3. I'm not sure the case a...
by TJ
Fri Sep 24, 2004 2:49 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Automatic searching of CONCAM archive
Replies: 4
Views: 5924

Re: predicting image timestamps

Argh... goofed my math.
TJ wrote:stamp = seconds since 00:00:00 GMT
delta = stamp % 236
if(delta > 118) then nearest = stamp + delta - 236
else nearest = stamp - delta

if(delta > 118) then nearest = stamp - delta + 236

That should be better.

Thanks,
Dave
by TJ
Fri Sep 24, 2004 2:30 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Automatic searching of CONCAM archive
Replies: 4
Views: 5924

predicting image timestamps

The schedule is predictable, and the filenames used to match that. Images are taken on a sidereal-based schedule. (every 3:56 from midnight). However, it looks like the filenames are off by a second or two for lots of images. Ideally, the algorithm you'd use is: stamp = seconds since 00:00:00 GMT de...
by TJ
Wed Jul 28, 2004 8:57 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Should we reverse the world map?
Replies: 5
Views: 9390

Re: Yes

Well, the world map is indeed highly non-intuitive, but it makes one think about it, eventually realizing that NSL "looks" from earth up. I'm not quite sure about this, but the reversed map might make visitors try to figure out what NSL actually is. Perhaps my argument is rather weak, but...