f/5 Thorium Argon and Quartz Lamps

Last update:  June 7, 2013

If lamps should fail during a run, the f/5 Th-Ar and Quartz lamps, located in the hub of the f/5 secondary, may be used.  Note that MAESTRO's slit acts like a pinhole, so your spectra will have images of the f/5 lamp hub superimposed on the spectrum.  

The f/5 Th-Ar lamps are dim, so exposure times will be long.

Marc Lacasse of SAO is the person who mounts the lamps in the f/5 hub.  Coordinate with him, well in advance of the start of the run, to install the lamps.

Instructions about how to turn the lamps on can be found HERE.

Photographs of the proceedure are found HERE.