purplecthulhu: (Kecks)
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posted by [personal profile] purplecthulhu at 08:08pm on 30/11/2008
ESO requires observers to arrive 48 hours before their run starts so that phase 2 preparations for observations - essentially writing scripts that semi-automate what's to be done - can be completed.

I did most of mine last night so, my support astronomer, I can have the day off.

There are a few more things to do, and I have some phase 2 work to do for colleagues arriving here in a few days, but I'll do that later, once it's dark. Instead I've been resting, catching up on sleep and... waiting for things to get going. There's a lot of waiting in astronomy :-)

The centre of mass for ESO's operations has move north from La Silla to the Paranal observatory and the VLT. While the big three telescopes still operate here - the 3.6m, the 2.2m and the NTT, which I'm using, most of the others are closed, mothballed, waiting for some unlikely project to come along that will get them going again. The sleeping, unused domes, and there are at least 10 of them, make La Silla an odd place, haunted by past achievements and lost promise. It's the kind of place that would be an interesting location for some fiction...
Mood:: 'pensive' pensive
There are 3 comments on this entry. (Reply.)
 
posted by [identity profile] xerhino.livejournal.com at 02:05am on 01/12/2008
When I here "writing scripts" I think of perl (or python maybe), but time I had access to a telescope everything was in C (or pascal), plus whatever libraries were used by the telescope or photometer or other hardware. I admit this was very long ago. What do you mean when you say "writing scripts"?
 
posted by [identity profile] purplecthulhu.livejournal.com at 02:10am on 01/12/2008
A lot of observatories, ESO included, have their own specific method of describing observations. ESO uses a tool called P2PP to do this. The tool itself is java based and the observation descriptions are plain text files that are read by whatever drives the instrument. What happens under the hood I'm not so sure of. I think ESO does something with Python on top of a real time unix derivative. I know UK telescopes front end is perl in many cases, also on top of real time unix. It all used to be VMS but that's a long time ago.

If you want to know more I might be able to point you in a few directions.
 
posted by [identity profile] xerhino.livejournal.com at 02:58am on 01/12/2008
No need to dig up anything for me. I was really just interested to hear what the modern* ways were. Yeah, I've used VMS too. And one program for reading photometer output used a serial port on an old Apple IIe. Some things seem to be hacked together in any lab. Anyway, just curiosity.

*modern for non recent values of modern. :-)

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