What is a digitizer?
What is a digitizer? A digitizer, also known as an analog-to-digital converter (ADC), converts the analog signal generated by a spectrometer’s detector into digital data that can be processed and analyzed by a computer. The digitizer’s resolution is...What is a Stray Light?
Stray light is any light that hits the detector unintentionally. The detector is not able to distinguish wavelengths, so it cannot tell the difference between the e.g. 500 nm light that is supposed to hit a pixel and the 505 nm light that accidentally hit it. It will...What is a spectrometers F-number?
The f-number, also called the f-stop or the f-ratio, is an optical component’s focal length divided by its diameter: where N is the f-number, ƒ is the focal length, and D is the diameter. Often, this is written as “f/N,” so for N=4, it is written “f/4.” This number...What is Pixel Resolution?
Pixel resolution is simply the dimensions of the detector in pixels. For StellarNet detectors, the CCD is 2048 x 1 pixels and the PDAs are 512 x 1 or 1024 x 1 pixels. Notice that they are all linear detectors. Computer monitors and TVs are also described according to...What is a spectrometer’s grating efficiency curve?
A grating efficiency curve shows how efficient a grating is at diffracting light at each wavelength. Below is a grating efficiency curve for the VIS BLUE-Wave spectrometer model: Absolute efficiency (%) is plotted versus wavelength. At 500 nm, the efficiency is ~75%....
Introducing our new Applied Spectroscopy Division
New Handheld Raman!
New! ChemWiz-ADK Handheld NIR Spectrophotometer with on board chemometrics and spectral matching!
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Check out our SpectroChemistry Systems for UV-VIS and Fluorescence Applications
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New Spectrometer Python Application Driver
for Windows, Linux, RasPi, Mac
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HYPER-Nova Highest Performance Raman Spectrometer
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