Red Tide/USB650 Features
- Preconfigured spectrometer for 350 to 1000 nm range
- 650 element detector for nominal 2.0 nm resolution
- Highly cost effective optical tool for most general spectral measurements
- Can be used for transmittance, absorbance, reflectance and irradiance measurements
- USB interface for direct, efficient spectrometer-to-computer connection
The Red Tide Spectrometer, also known
as the USB650, is the world's most amazing
low cost spectrometer. It is both low cost and
a truly utilitarian tool that is ideal for many
general purpose spectral measurements.
The Red Tide Spectrometer has a pre-
configured range of from 350 to 1000 nm
and a resolution of ~2.0 nm. It can be used
with most all Ocean Insights‘ accessories to
provide many and varied measurements.
Red Tide Design
This utilitarian spectrometer is of an
asymmetrical crossed Czerny-Turner optical
design with a 42 mm input / 68 mm output
focal length. The detector is a linear silicon
CCD array with 650 enabled detecytor elements
(pixels). The input slit is 25 µm wide
with the optical signal being received via a
fiber optic line, with a 905 SMA connector.
The signal to noise ratio is 250 : 1. The A/D
resolution of 12 bits provides a dynamic
ran ge of 2X108 overall. Integration time is
variable from 3 ms through 65 s.
There are two configurations for the Red
Tide spectrometer. One is a standard
spectrometer system which includes an attached
tungsten light source and a cuvette sample
holder. This latter system is a true spectrophotometer
similar to the CHEMUSB4-VIS/NIR
system. Both configurations interface
to a computer, via USB 2.0 port.
The spectrometer configuration (USB-650)
can be used with various OceanOptics spectrometer
accessories, light sources and sampling
optics, so as to create application-specific
systems for various transmission, absorbance,
reflection and emission applications.
The spectrophotometer configuration (USB-650-UV-VIS
or USB-650-VIS) comes both
in a UV/VIS and a VIS-NIR version.
The USB650-VIS/NIR is an excellent value as
it is a true spectrophotometer that covers the
full visible and some of the near infrared
spectrum. On the other hand, purchase of
the UV/VIS version is not recommended
because of the expense for a limited ultraviolet
Note that the OceanOptics “OceanView”
software is suggested for the operating
software, OceanView is a modular,
Java-based spectroscopy software
platform that operates on Windows,
Macintosh and Linux operating systems.