The 9150 is Sciencetech's largest monochromator with a 1.5m focal length. Under optimum conditions with a 2400 l/mm grating it can achieve a resolution of 0.004 nm in single pass mode. 9150SD includes an optical module that allows the unit to be configured in a double pass mode as well, effectively doubling the focal length to 3m and achievable resolution to 0.002 nm. It utilizes large 102 x 102 mm gratings for high light throughput (f/12 aperture). The 9150SD accommodates one grating on a removable, kinematic mount that allows the user to manually swap one grating for another without losing alignment.
For additional information, please see the technical datasheet.