Freedom from DOS at Last!
In a previous post I described one of the “workhorses” I have been using for several years for recording spectra. This is the Oriel MS125 spectrometer coupled with an InstaSpec […]
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Spectroscopy
Factors Affecting Spectrometer Performance
Introduction There are a number of technical constraints to consider when selecting a spectrometer for a particular application, whether this involves purchasing a commercial model from the wide range of
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Off-Axis Guiders and Sighting Optics
Introduction An off-axis guider is a device well known to all astronomers, professionals and amateurs alike. It usually consists of a compact optical unit inserted between the main imaging camera
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Mercury Lamp Spectral Changes at Start Up
This is a quick post that examines the spectral line emission changes that occur when a Mercury-Argon (Hg-Ar) gas discharge lamp is switched on and warms up. I used the
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Light Sources for Calibrating Spectrometers
The calibration of spectra in wavelength λ that you will see in these different posts has usually been performed with commercial “pencil-type” spectral lamps of mercury-argon Hg(Ar), krypton (Kr) and
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Spectrometer Calibration
Introduction Modern spectrometers today, regardless of their size, employ sensitive linear CCD and CMOS sensors. The most popular sizes have 1024, 2048 and more recently 4096 pixels along the dispersion
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Spectrometer Designs
Introduction The development of the spectroscope over the last 160 years since its invention has paralleled the evolution in technological advances. This is particularly the case over the last several
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FICS -Fixed Imaging Compact Spectrograph
Introduction As its name implies, this spectrometer has a fixed diffraction grating. So the wavelength range available and the resolving power (the spectral resolution) are pre-determined during manufacture. Oriel (now
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