Difference: 20160127MSciPhotometryAnalysisOb1part7 (4 vs. 5)

Revision 529 Jan 2016 - ElenaCukanovaite

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META TOPICPARENT name="StewartBoogertPhotometry2015"

Goodness-of-fit with maximum likelihood progress

  • Curve_fit fitting used the following equation:
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rho_hist.png
  • Generated 100 images.
  • Ran them through the finding algorithm.
Changed:
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Bias Frame

  • Ran the background algorithm to see if the bias frame showed the gradual heating from the instrumentation of the camera.
  • It did. Below are the first and last bias frames we took.
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  • 1 image could not be processed by the algorithm due to the threshold.
  • 99 images were analysed.
  • Histogram below shows the number of stars that were not detected.
histogram_not_found.png
  • Median of not found stars is 4 stars.

Bias and Dark Frame

  • Ran the background algorithm to see if the bias and dark frames showed the gradual heating from the instrumentation of the camera.
  • It did. Below are the first and last bias and dark frames we took.
 
first.png

last.png

Added:
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df_first.png df_last.png
 
median_30.png
Added:
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Stacking images

  • Wrote an algorithm to stack images.
  • The algorithms takes in 3 star coordinates from our 'base' image.
Line: 151 to 157
 
META FILEATTACHMENT attachment="sigma_x_hist.png" attr="" comment="" date="1454018539" name="sigma_x_hist.png" path="sigma_x_hist.png" size="27792" user="zxap014" version="1"
META FILEATTACHMENT attachment="sigma_x_hist_cut.png" attr="" comment="" date="1454018543" name="sigma_x_hist_cut.png" path="sigma_x_hist_cut.png" size="28956" user="zxap014" version="1"
META FILEATTACHMENT attachment="rho_hist.png" attr="" comment="" date="1454018548" name="rho_hist.png" path="rho_hist.png" size="28106" user="zxap014" version="1"
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META FILEATTACHMENT attachment="histogram_not_found.png" attr="" comment="" date="1454026996" name="histogram_not_found.png" path="histogram_not_found.png" size="29559" user="zxap014" version="1"
META FILEATTACHMENT attachment="df_first.png" attr="" comment="" date="1454027505" name="df_first.png" path="df_first.png" size="46176" user="zxap014" version="1"
META FILEATTACHMENT attachment="df_last.png" attr="" comment="" date="1454027510" name="df_last.png" path="df_last.png" size="44568" user="zxap014" version="1"
 
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