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Version 4.2 rev 06 Oct 2020
8.2 x 8.2 mm / 512 x 512 sensor
Lowest Noise Imaging EMCCD
Mechelle
Figure 11: Camera Flange (right side view)
4. Couple a spectral lamp to the spectrograph (e.g. Mercury-Argon).
5. Rotate and focus the camera to achieve the smallest spots possible (3 pixels FWHM in CCD and 5 pixels
FWHM in ICCD in x-direction).
6. Also ensure that the 253 nm line from Hg source falls near the following pixels (X = 500, Y = 300) with ±10
pixels margin.
7. Tighten the grub screws (x3) and the cap head screw (x1).
8. To check the alignment, use a CW source (e.g.Tungsten or desktop lamp) and re-calibrate. The pattern on the
image as shown on this example should be as near to horizontal as possible.
9. To focus the camera, move it forward/backwards in increments. The spot on the image as shown below should
be as small as possible (This image is also used to align the slit).
Camera Alignment
Grub Screw
Camera Alignment
Grub Screw
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