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Grating Dispersion Calculator

  °  First select the CCD detector
  °  Select a spectrograph model that offers the required focal length
  °  Select the grating
  °  Enter the central wavelength and click the "Enter" button

The grating curves show typical relative efficiency for the various blaze wavelengths for selected gratings and should be used as a comparison guide only. Select CCD Detector PIXIS:100/PyLoN: 100 PIXIS: 400/PyLoN:400 PIXIS: 256/Spec-10:256 PIXIS 2K; Spec-10:2K SpectruMM PIMAX 1024-18-G.II PIMAX 1024-18-G.III PIMAX 1024-25-G.II OMA V 512 OMA V 1024 Center Wavelength(nm) Grating angle: Hor. pixels: Vert. pixels:     Pixel Size :       Spectrograph   Linear dispersion   Select Spectrograph: SP-2150i SP-2300i InSight SP-2500i SP-2750 Dispersion: | Focal Length (mm): Bandwith per pixel | Aperture ratio: CCD Resolution (FWHM): | Grating   CCD coverage Select Grating: 50 l 75 l 150 l 300 l 600 l 1200 l 1800 l 2400 l 3600 l CCD width (mm): Grating Density (L/mm): CCD coverage: Grating size:   Note:   Use 68 x 84mm Grating When operating at high wavelengths (high grating angles). the 68 x 84 mm grating preserves the light collecting power (aperture Ratio) Central Wavelength to High Refers to the mechanical rotation capability (not the operating or optimum range) of a grating drive. Lower the central wavelength or select a grating that allows operation over your required wavelength region. CCD Resolution (FWHM) Refers to the resolution available with the selected detector or image intensifier. Calculated as a typical FWHM = 2.5 pixels used as reference, actual values may vary. Spectral Coverage: approximate, use for reference purpose only. Link to Richardson Lab grating table: http://partners.gratinglab.com/products/table1.asp