Spectroscopy

Recently various of the calibration lamps have failed and some extra spares were purchased. Also, a new FeAr lamp was bought which will be tested to see if it provides an alternative for the ThAr lamp (specifically on the required exposures times which are long for the ThAr lamp).

The procedure to measure ALFOSC grism efficiencies have been defined in detail, and the efficiency of the grism re-measured. This and the information on fringing on the web pages will be updated.

The target acquisition process will be further streamlined and a sequencer command will be made such that this process can be started from a script.



Thomas Augusteijn 2008-11-14