create new tag
view all tags

20130225 Laser Pointing Stability

Recorded 10 buffers of 64 images using tapercam at VIP to ascertain the laser pointing stability.

Analysed data using new labview VI to extract only horizontal and vertical centroids using a job file where the crosshairs are set to snap to the centroid. Note the camera is rotated so 'centroid x' is actually the vertical of the beam here.

Orientation Beam Vertical Beam Horizontal
max 1340.8 1200.6
min -2485.6 426.2
mean 970.34 841.2

  • Horizontal seems fine, but vertical has some clear outliers. The image on the camera is stable therefore there must be dead pixels (stuck on max) or under exposure in tehse images which afects the centroid.

Edit | Attach | Watch | Print version | History: r2 < r1 | Backlinks | Raw View | Raw edit | More topic actions

Physics WebpagesRHUL WebpagesCampus Connect • Royal Holloway, University of London, Egham, Surrey TW20 0EX; Tel/Fax +44 (0)1784 434455/437520

Topic revision: r2 - 26 Feb 2013 - LaurieNevay

This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2024 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding RHUL Physics Department TWiki? Send feedback