HO-SP-RE-02 Spectrometer - Goniometer 2
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$2,999.00
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Spectrometer - Goniometer 2
Holmarc’s Spectrometer Goniometer is designed as a versatile instrument suitable for precise determination of the optical parameters of prisms and gratings. It can also be used as a spectroscope, for qualitative examination and measurement of emission and absorption spectra. Holmarc’s well designed mechanics of the Goniometer allows maintenance-free operation over many years.
This system consists of a mercury lamp with power supply, prism with holder and transmission grating with holder. The collimator and the telescope have a focal length of 202 mm and a diameter of 32 mm. The collimator tube has an adjustable slit.
Experiment
- Determine the refractive index of a glass prism
- Demonstrate the relationship between refractive index and wavelength (dispersion curve)
- Calculate the resolving power of the glass prism from the slope of the dispersion curves
- Determine the wavelengths of the mercury spectral lines
- Determine the grating constant of a diffraction grating based on the diffraction angle of the high intensity spectral lines of mercury
- Determine the angular dispersion of a grating
- Calculate the resolving power required to separate the different Hg-Lines
Specifications:
| Spectrometer - Goniometer | |
| Angular scale | 0° to 360° with 0.5° divisions |
| Resolution | 30 arc second |
| Focal length collimator | 202 mm |
| Focal length Telescope | 202 mm |
| Observation Tube | Infinity Variable |
| Ocular | Crosshair |
| Slit Tube | Symmetric Precession Slit |
| Variable slit | Micrometer variable 0 - 3mm |
| Eye piece Magnification | 10 x |
| Construction Material | Aluminum |
| Finish | Black Anodized |
| Prism | |
| Material | NSF 1 (60°), BK7 1 each |
| Transmission Grating | |
| Size (mm) | 38 x 50 mm |
| Lines / mm | 500 and 1000 lines / mm |
Features:
| Prism table attached with vernier table |
| 30 arc second resolution |
| Covered Goniometer scale |
| Classic design spectrometer Goniometer |
| High-quality optics |
| Symmetrical precision slit |
