Newsgroup sci.techniques.spectroscopy 2808

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This question is posted on behalf of Associate Professor Bill 
van Bronswijk who is deliberating over the purchase of a second 
Raman spectrometer for the School of Applied Chemistry at Curtin 
University in Western Australia.
We already have a Bruker RFS100 and are now choosing between the 
Dilor Labram I and the Renishaw Raman microprobe/spectrometer.
Does anyone have any comments about these two instruments?
Bill may be e-mail directly at W.VanBronswijk@info.curtin.edu.au
advTHANKSance,
Chappy.

Jan '97 is what I've been told.

I am searching for references of H2S spectral properties around
1570-1580 nm. Any detailed information of absorption bands in this area
is of interest. There is no information in HITRAN '96 and I have found
very little literatture on the net.
Thank you,
Einar Wahlstrøm

THE NEW LOW COST PC-PLUG IN FIBER OPTIC SPECTROMETER
developed  by  Biospec  (Russia)  turns your PS  into  sophisticated
spectrometer system.
      The  systems  includes  fiber optics  SMA  input  spectrograph
mounted  on   12  bit  ADC converter PC-plug in  board,  MS  Windows
software for spectrometer control and data analysis, MS Windows  DLL
drivers  for  custom software development, bifurcated  fiber  probes
for reflection, absorption  and fluorescent measurements. The system
can  be completed also with laser and light sources with SMA output.
The   silicon  CCD  array with 2200 active elements  is  used  as  a
detector. The dynamic range of the detector is 2000. The NA  of  the
spectrometer  is  matched  to  that  of  silica  fiber  to  increase
sensitivity  and  diminish stray light. The fibers  at the  detector
end  of  the  probe are formed into the row (slit)  to increase  the
optical  resolution  and sensitivity.  The cylinder  lens  installed
before  detector  and  big detector element  height  allows  one  to
concentrate  all  light from the input slit into the  detector  what
increases  the spectrometer sensitivity. The spectrometer  has  been
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        Contact:   Dr.   A.A.  Stratonnikov,  Laser  Biospectroscopy
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Fax  ,  7-095-3246363,  7-095-1350270,  Tel 7-095-3246363,  E  mail:
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General Specification
Optical parameters
Spectral range *                                  400 - 800 nm
Optical resolution (100 mm fiber & 600 gr/mm)     2 nm (FWHM)
Numerical aperture                                f/2.7
Collimating focal length                          51.5 mm
Camera focal length                               40 mm
Dispersion (600 gr/mm grating) (600 nm)           22 nm/mm
Stray Light                                       5 *10-4
Input slit height **                              1.8mm
Input fiber connector                             SMA-905
Detector & Electronics
Detector type                                     CCD linear array
Number of active elements                         2200
Detector element size                             200 mm ' 8 mm
Exposition time                                   100 ms - 100 sec
Dynamic range***                                  2000
ADC converter resolution                          12 bit
Dimensions                                        25*10 cm
Power consumption                                 0.5 A at 5 V
* Spectral range may be  enhanced from 250 nm to 1100 nm by using
another grating
** Spectrometer has the cylinder lens so that all light from the
input slit  (input fibers arranged into the row) is  focused into
detector increasing the sensitivity.
*** The Dynamic Range is defined as I(saturation)/I(noise,RMS)