Subject: arc calibrations

From: strauss@astro.Princeton.EDU

Submitted: Thu, 9 Oct 1997 09:44:07 -0400 (EDT)

Message number: 38 (previous: 37, next: 39 up: Index)

Hello all,
  I would just like to advertise the success that Xiaohui Fan and I
had last night, doing arcs remotely with DIS.  We controlled the arc
lamps via the internet (http://lampswitch35m.apo.nmsu.edu/, logon as
visitor1 with the usual password), and didn't bother closing the dome
or mirror covers; we were still looking out on the sky.  A 30 second
exposure in low-res mode with He Ne Ar gave us a fine arc exposure
with essentially no overhead.  Of course, if your object is bright,
you will have superposed on this faint sky lines and the object
itself; you can avoid the latter by offsetting the telescope slightly
if it is a problem.  You just have to be sure to turn off the arc
lamps when you're done.

			Cheers,   Michael
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