Longest Focal Length Commercial Instrument
Patented "Snap-In" gratings
Extended wavelength range setting
Rugged Construction with Multiple slit locations
· Longest Focal Length Commercial Instrument
· Patented "Snap-In" gratings
· Extended wavelength range setting
· Rugged Construction with Multiple slit locations
The McPherson Model 2062 is the highest resolution diffraction spectrometer commercially available. It can be operated with Double Pass (DP) optics for an additional two fold improvement. This unique 2-meter focal length Czerny Turner can be equipped with large gratings (up to 220 mm wide). Grating rotation in excess of 70 degrees is allowed and double pass optics can be installed. These double the dispersion and resolution without influencing the f/no. or aperture ratio.
An example of a Model 2062 in use for highly precise spectral-line measurements of the Sun as a star can be found at Synoptic Optical Long-term Investigations of the Sun (SOLIS) web site. This is a facility for solar observations over a long time frame, funded by the NSF and designed and built by the NSO. The 2062, pictured in their gallery, has provided ten years of high resolution spectra.
Model 2062 PDF Data Sheet
Optical Design | McPherson Model 2062 2-meter focal length f/14.1 Monochromator |
Focal Length | 2-meters, Czerny Turner design Spectrometer with Patented "Snap-In" gratings |
Aperture Ratio | 14.1 (17.4 with smaller grating) |
Wavelength Range | refer to grating of interest for range, in extended position increase top limit 20% |
Wavelength Accuracy | +/-0.05 nm (with 1200 G/mm grating) |
Wavelength Reproducibility | +/- 0.005 nm (with 1200 G/mm grating) |
Grating Size | 120 x 140-mm (or 110 x 110-mm) - Echelle gratings up to 220-mm wide |
Slit Locations | Axial and lateral with optional extra entrance and exit port selection mirrors |
Focal Plane | 50-mm maximum width, multiply dispersion by the width of your detector for range |
Performance with various diffraction gratings:
Grating (G/mm) (others available) | 2400 | 1800 | 1200 | 600 | 300 | 150 | 75 | 20 |
Wavelength Range from 185-nm to | 650nm | 860nm | 1.3um | 2.6um | 5.2um | 10.4um | 20.8um | 78um |
Resolution (nm) at 313.1-nm | 0.003 | 0.004 | 0.005 | 0.010 | 0.020 | 0.040 | 0.080 | 0.300 |
Dispersion (nm/mm) | 0.21 | 0.28 | 0.42 | 0.84 | 1.68 | 3.36 | 6.72 | 25.2 |
First Order Littrow Blaze (nm) | 240nm | Holo | 250nm | 300nm | 750nm | 1.25um | 2.0um | 45um |
300nm | 300nm | 500nm | 1.0um | 2.5um | 3.0um | |||
Holo | 500nm | 750nm | 3.0um | 4.0um | 8.0um | |||
750nm | 1.0um | 4.0um | 6.0um | 10.0um | ||||
1.0um | 1.85um | 8.0um | 12.0um | |||||
