Next lab-exercise

The poll for the next lab-exercise is out, please go to

http://doodle.com/y886gfshm4h7giyf

to register. Check the option for the day/time that suits you, as last time.
I've limited the nr. of participants for each day to three, so that we
get an even distribution of not too many people for each of them.

The lab-exercise text can be found here - read it before the lab.
Again, if there are any problems or questions, email me at ainard@astro.uio.no.

Ainar