Reproducing the Velador Experiment

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Calibration Pictures

These are some of the first photos taken by the mounted camera, as installed.

First Image (Calibration Photo 001, Above)

This is an image taken of the laser off-axis with no filter. Note the ghost image due to internal reflection. It is visible even though the apprent light path is blocked by my fingers. Note also that the vertical axis in all of these calibration images is rotated 90 degrees.

This is a picture of the velador interior using the same settings as above, with my finger blocking the actual light path of the laser, which is low in the beam in comparison to the camera.

This is the image using the same setting with no fingers.

This is the same photograph made with the top on the beam and a slightly different setting of the camera and laser cells. The laser is still off-axis, and no filter is installed. The largest ghost image can be eliminated with a little adjustment ot the angles of the cells. However, there is also reflection from the interior walls of the beam, which causes the image to appear to spread.