Finding the best radius of the aperture circle. Simulated a star with 2D Gaussian with a sigma of 2 pixels, with no background. Then, I gradually increased the radius of the circle around the star, summing the number of photoelectrons in the circle and compared to total photoelectrons in the simulated image.



100% of light, multiplier = 15.6

Fitted function. (in lab book)


- Star matching works on multiple images but still needs to be adjusted, some merging of stars between images.
- Done error propagation for HR diagram from conversion from #pes to magnitude.

-- BekiChafer - 21 Feb 2018

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng Aperture_Figure.png r1 manage 38.2 K 21 Feb 2018 - 00:24 RebekahChafer1  
PNGpng Aperture_results.PNG r1 manage 6.1 K 21 Feb 2018 - 00:24 RebekahChafer1  
PNGpng Test_Proximity.png r1 manage 15.8 K 21 Feb 2018 - 01:50 RebekahChafer1  
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 - 21 Feb 2018 - RebekahChafer1

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