- During the week, correct grating position was found and grating was stuck down
- Sigma of the Gaussian fit to the peak as a function of the lens-camera distance:

- Hyperbolic function used:

- Best guess values used are a = 1, b = 4, μ = 21
- Lowest value of σ is 2.72

- Sigma of the Gaussian fit to the peak as a function of the camera rotation:

- Cosine function used:

- Best guess values used are a = 1, b = 4, μ = 1
- Lowest value of σ is 3.49

- Cutoff value = 0.02
- Size of xrange has to be greater than 2
- The length of adjacent value considered = 3

- Plot of normalised Vega spectrum with its normalised second derivative:

- Vega spectrum with its peak located:

I | Attachment | History | Action | Size | Date | Who | Comment |
---|---|---|---|---|---|---|---|

png | Normalised_plot.png | r1 | manage | 138.1 K | 02 Dec 2016 - 13:42 | JamesAngthopo | Plot of normalised Vega spectrum with its normalised second derivative |

png | VegaSpec_plot.png | r1 | manage | 88.3 K | 02 Dec 2016 - 13:43 | JamesAngthopo | Vega spectrum with its peak located |

png | sigma_Distance_Hyperbole.png | r1 | manage | 52.1 K | 02 Dec 2016 - 13:35 | WilliamBurrows | Sigma of the Gaussian fit to the peak as a function of the lens-camera distance |

png | sigma_Rotation_Cosine.png | r1 | manage | 48.0 K | 02 Dec 2016 - 14:27 | WilliamBurrows | Sigma of the Gaussian fit to the peak as a function of the camera rotation |

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

Topic revision: r3 - 02 Dec 2016 - WilliamBurrows

Copyright © 2008-2023 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

Ideas, requests, problems regarding RHUL Physics Department TWiki? Send feedback