MCS260
CORNERSTONE 260 MONOCHROMATORS
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2 INTRODUCTION
The Oriel Cornerstone 260 is a high performance, economical and user-friendly monochromator – an
ideal instrument for research and OEM applications.
Each of these instruments includes up to three diffraction gratings, filter wheel control circuitry and an
integrated electronic shutter. Communication may be established using USB, RS232, GPIB (IEEE-488)
or an optional hand controller designed specifically for use with the Cornerstone family of
monochromators.
The Cornerstone 260 includes a utility program designed to run on a computer using the Microsoft
Windows operating system. The simple, intuitive interface means that users can get up and running
within minutes of opening the box. Instrument control examples using National Instruments LabVIEW are
provided, along with a command set and API for those wishing to develop their own programs. An
optional hand controller may be used for quick access to all common commands and queries, without
requiring a computer. This is especially beneficial in universities and secure facilities.
A wide selection of preconfigured grating selections are available for the Cornerstone 260, as well as
special order options. Throughput and resolution can be adjusted by selecting the appropriate slit size.
Fixed slits are available for high accuracy and repeatability, and micrometer adjustable slits may be used
for maximum flexibility. Automatic bandpass control is available with the use of motorized slits.
2.1 OPTICAL CONFIGURATION
The optical design of the Cornerstone 260 is based upon an asymmetrical in-plane version of a
Czerny-Turner monochromator. The optical configuration is designed to ensure high resolution
and maximum throughput. This F/3.9 monochromator is optimized to provide excellent stray light
rejection while minimizing aberrations. A high precision motor is used to select the desired
wavelength and switch between diffraction gratings quickly, without sacrificing performance.
Figure 1: Optical Configuration of the Cornerstone 260
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