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SPECTROSCOPY INDEX - New

Spectra L200 Spectrograph
First Order Bench Testing with F4T5D Light

These are the first Spectra L200 bench test spectrums.

The spectrums are of a hand held five inch fluorescent (Satellite F4T5D) light taken with an unpainted Spectra L200. The fluorescent light uses excited mercury atoms and therefore the spectrum has strong mercury emission lines

The bright and colorful mercury emission lines make it easy to identify the wavelengths for the micrometer settings.

There is a very faint cyan emission line in the spectrums below.

See the Spectrum of Mercury Gas Discharge for a colorful spectrum diagram that helps to identify the emission lines below.

The camera is a very old Nikon Coolpix 990 Digital Camera afocal coupling to an eyepiece (STWA18 Wide Angle 18mm Eyepiece/Adapter ) with built in adapter threads to the camera.

Short wavelengths are on the left side of the spectrum and long wavelengths are on the right side of the spectrum. The spectrum images are one quarter size and cropped from the original images.


Micrometer Setting: 22.15
4046.563 and 4358.328 - Violet Emission Lines

Satellite F4T5D light Specturm


Micrometer Setting: 22.00
4358.328 - Violet Emission Line

Satellite F4T5D light Specturm


Micrometer Setting: 21.85
5460.735 - Green
5769.598 and 5790.663 - Yellow, Emission Lines

Satellite F4T5D light Specturm


Micrometer Setting: 21.70
5460.735 - Green
5769.598 and 5790.663 - Yellow, Emission Lines

Satellite F4T5D light Specturm


Micrometer Setting: 21.55
5460.735 - Green
5769.598 and 5790.663 - Yellow
6149.475 - red Emission Lines

Satellite F4T5D light Specturm


Micrometer Setting: 21.40
6149.475 - red Emission Line

Satellite F4T5D light Specturm


Spectra L200 Spectrograph