Difference: LogBookAstronomyEntry0104 ( vs. 1)

Revision 119 Jul 2016 - JosephBayley

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="LogBookAstronomy"

Log Book Entry No.104

Days, Calendar Created: 19 Jul 2016 11:06:34 Days, Calendar Last Revised: 19 Jul 2016 11:06:34 Person JosephBayley Text Aligning Camera and Optical fibre through Beam Splitter

<-- 
Please DO NOT alter or remove the line below this line. 
  • Set EDITMETHOD = wysiwyg
Please DO NOT alter or remove the line above this line. -->

IDEA! Please edit and put your text etc. here

Aligning Camera and optical fiber

  • Spectrum images,
    • Exposure: 0.1s
    • Temp: 10 deg
    • used subframes around spectral to speed up

  • The FireWire camera was attached to the beam splitter and connected to IC capture
  • Optical fiber was attached using a spacer to approximate the same focal length as the FireWire CCD

  • Initially an approximate focus was found on the FireWire camera.
    • Then the angle of the mirror was adjusted vertically such that the laser beam was scanned vertically.
    • images of the position on the CCD and the spectrum were taken at a range of positions.
    • The amplitude of the spectral line was then recorded with position on the CCD.
    • This gave a plot shown below for the maximum intensity. i.e centre of fiber

    • This was then repeated for a scan horizontally, which gave the plot below.

  • The best positions were found to be at [190,218] pixels, i.e 190 pixels across and 218 pixels down

  • The the focus of the image was to be found.
    • The box which the beam splitter and camera is attached to was placed on the rails and scanned backwards and forwards using a ruler for approximate focal length.
    • Images were recorded for both the camera and optical fiber, and the amplitudes were plotted against focal length.
Back to: LogBookAstronomy

META FORM name="%25SYSTEMWEB%25.LogBookForm"
FORM FIELD Subject Subject Aligning Camera and Optical fibre through Beam Splitter
FORM FIELD Status Status blank
FORM FIELD Author Author JosephBayley
 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2021 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