Troubleshooting guide

Halting A Script: Never type Ctrl-C . It is much safer to suspend a job with Ctrl-Z. Then you can kill the
script by typing jobs, and kill -9 %<job number>. If you are moving a wheel, please just wait for the
wheel to finish motion, and the script to complete, and then try again. If you are taking an image or a sequence
of images, wait until the script starts counting the number of seconds elapsed in the exposure before suspending
the script. Then run ufstop.pl -clean -stop, and start over. Never type Ctrl-C before the exposure
time counter has begun.
Imaging Sensitivity
FWHM = 3 pixels = 0.95 arcseconds
Aperture = 2.2 arcseconds diameter
Band e/s for
mag = 15
sky
10 σ limiting magnitude
mag arcsec
-2
e sec
-1
pixel
-1
60 seconds 600 seconds 3600 seconds
J
3450 15.7 180 18.8 20.0 21.0
H
4480 13.9 1250 18.0 19.2 20.2
K
4360 12.9 3050 17.5 18.7 19.7
K
s
3800 13.1 2210 17.6 18.8 19.75
These data are from the KPNO FLAMINGOS web site, www.kpno.noao.edu/manuals/flmn.
The above data were for the original J, H, and K
s
filters, which were loaned to UF from NOAO and Gemini.
New J, H, and K
s
filters were installed during the summer of 2003. The signal levels with the new filters are
similar to those in the table.
FLAMINGOS@4-m, Ver. 2.34, 2006 Apr 04 Page 7 of 44