EFOSC2 

EFOSC2 Instrument Layout

• A slit wheel
• A filter wheel
• A grism wheel
• A collimator to make the beam parallel
• A halfwave plate for polarimetry
• Helium and Argon arc lamps for spectroscopic wavelength calibration
• Quartz lamp for internal flat fields
• A camera unit
• A calibration screen (not shown in the figure)

The different elements are described in greater detail under the respective headings on the main EFOSC2  page

One of the features of this instruments is that all optical elements, other than apertures (masks, slits etc) are introduced into the optical path after the beam has been made parallel by passing it through a collimator.

Last modified: Sat Nov 17 05:38:25 CLST 2001