Chapter 6
LightField First Light
33
EAR99
Technology
Subject
to
Restrictions
Contained
on
the
Cover
Page.
6.1
Set Up and Configuration
This section provides step-by-step instructions for acquiring a spectrum in LightField
for the first time. The intent of this procedure is to gain familiarity with the operation of
the system and to show that it is functioning properly. Once basic familiarity has been
established, additional, more complex configurations can be implemented.
The following procedure assumes:
•
The system has been set up in accordance with the instructions in previous
chapters;
•
Familiarity with LightField;
If this is not the case, refer to the online help while performing this procedure.
•
A suitable light source (e.g., mercury pen-ray lamp,) has been mounted in front
of the entrance slit of the spectrograph.
Any light source with line output can be used. Standard fluorescent overhead
lamps have good calibration lines as well. If there are no line sources available, it
is possible to use a broadband source such as tungsten for the alignment. If this
is the case, use a wavelength setting of 0.0 nm for alignment purposes.
CAUTION!
!
Overexposure Protection:
Cameras that are exposed to
room light or other continuous light sources will quickly
become saturated. If the camera is mounted to a
spectrograph, close the entrance slit of the spectrograph to
20 mm (typical) to reduce the incident light.
Perform the following procedure to set up and configure the system to acquire a
spectrum:
1. Set the spectrograph entrance slit width to minimum (20 mm if possible.)
2. Turn ON the spectrograph (if applicable.)
3. Mount a light source such as a Teledyne Princeton Instruments
IntelliCal
®
Hg/Ne-Ar Dual Switchable light source in front of the entrance slit.
4. Power on the camera.
5. Launch LightField.
6. Once LightField has started, a Lansis camera icon, will be shown in the Available
Figure 6-2: Typical Available Devices Area
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