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BLACK-Comet
UV-VIS Spectrometer Models
Range 190-900nm
StellarNet's
miniature fiber optic spectrometers with concave gratings deliver high
performance for spectroscopy
applications in the UV-VIS wavelength ranges covering
190-850nm (model
C),
or optionally 280-900nm
(model CXR). The
instruments are exceptionally robust with no moving parts, and are
packaged in small rugged metal enclosures (2.75 x4 x6 inch) for portable
spectroradiometry and lab or process spectroscopy measurements. The
BLACK-Comet UV-VIS spectrometers
utilize a 40mm diameter concave grating with aberration correction to
provide superb spectral imaging. This significantly improves spectral
shapes by reducing comma and astigmatism found in plane grating
spectrograph designs. The spectrograph
architecture does not utilize mirrors, and therefore provides the lowest
possible stray light in the UV with additional assistance from the
holographic line grating. The concave grating
produces a flat field on the CCD detector creating uniform resolution
over the entire range.
BLACK-Comet
UV-VIS spectrometer model CXR-25
(-25 denotes slit size) measuring the transmission of a
blue film using a
SL1
tungsten halogen lamp,
TXF-4
transmission fixture, and two
F600-VIS-NIR
fiber optic
cables and
providing colorimetric data in CIELAB color space. Go to the
colorimetry page.
UV-VIS
Absorbance
Spectrum of Riboflavin
Free SpectraWiz Software
The powerful SpectraWiz® 32
bit spectrometer software is provided free of charge
with every spectrometer instrument. This includes
drivers and customizable software for operation on
Windows.
The SpectraWiz software is considered the "Swiss Army Knife of
Spectroscopy and may be used to accurately measure wavelength emissions,
reflectance, transmission, absorption, concentrations, and absolute
intensities. In addition to real-time spectroscopy,
SpectraWiz® has built-in applications for SpectroRadiometry,
SpectroColorimetry, ChemWiz chemistry lab concentration analyzer, and UV
level monitors.
Interface
The system includes a high speed plug & play interface using USB-2
connection.
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BLACK-Comet
UV-VIS PDF Download
Price List
Concave
Grating PDF- Why Concave Gratings are the Best!!!
One of the main advantages of the BLACK-Comet is its ability to drastically
reduce straylight levels, 0.02% at 435 nm and 0.2% at 200 nm, the lowest
values of any field spectrometer. By design, the holographic grating has
a smoother surface than the normal ruled gratings used in competing
spectrometer models. Surface roughness is the primary source of grating
generated straylight and thus by employing superior grating technology,
StellarNet’s Concave Grating Spectrometers are able to drastically
reduce the effect. Additionally, grating scatter in the standard Czerny
Turner design is collected and focused by the focusing mirror toward the
exit port, this does not occur with the BLACK-Comet. When additional
optical components like collimating and focusing mirrors are used in
instrument design, it is more likely that light may be rediffracted and
scattered.
Similarly,
due to the spectrometers ability to reduce light scatter, especially
high power UV light, the Concave Grating spectrometer provides two to
three times enhanced UV sensitivity as compared to plane grating/Czerny
Turner optical configurations.
The units are ruggedized. As
shown above the detector is bolted in position and military grade epoxy
holds the concave grating in place making the instruments vibration
tolerant, durable, and suitable for just about any lab and/or field
measurment. A multi-band filter is integrated into the
spectrograph to provide order sorting and prevent optical aliasing. The
instruments optical input is attached via standard SMA-905 connector,
using single strand fiber optic cable with typical silica core diameters
of 400um, 600um, 1000um.
Optional Configurations
Several units may be daisy
chained via a parallel cable or USB-2 hub allowing simple configurations
for dual and multi-beam process applications.
Super Ranges (200-1100nm)
StellarNet has recently
released super range concave grating spectrometers. The grating uses an
enhanced Dual Blaze technology to extend the concave grating models
range to 1100nm. See more at
BLACK-Comet-SR
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