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The Gemini 180 is a fully automated, double additive grating scanning monochromator. The incorporation of toroidal optics provides for optimum throughput and spectral resolution. It is ideal for applications that require low stray light and illumination including Transmission, Absorbance, Reflectance, and Fluorescence. The Gemini 180 also functions as a high power, high purity light source for Fluorescence, Detector Characterization, and microscope illumination when Coupled with our FL-1039 (450 W Xe Light Source).
The Gemini 180 is fully automated, including the scanning drive, slits and shutters. The direct digital drive is self-calibrating. A single drive train is used to move each of the kinematically mounted gratings. One grating of the drive is coupled directly to the stepper motor while the second grating follows the rotation of the first via a metal belt transmission to ensure the best wavelength coupling between the two stages.
Focal Length | 180 mm |
Aperture Ratio | f/3.8 |
Mechanical Range | 0 - 1400 |
Grating Size | 50 mm x 50 mm |
Resolution | 0.15 nm |
Wavelength Accuracy | ±0.5 nm |
Repeatability | ± 0.1 nm |
Spectral Dispersion (@ 500 nm) | 2.1 nm/mm |
Stray Light | 1 x 10-9 |
Step Size | 0.06 nm |
Slits | Entrance and Exit |
Intermediate Slit | 50 µm to 7 mm |
Computer Interface | RS232/IEEE-488 |
Dimensions | Length: 57.2 cm (22.5 in) |
Weight | 18.1 kg (40 lb) |
All specifications given for 1200 g/mm grating and are subject to change without notice.
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