-- AaronAndrews - 01 Dec 2016

Observation on 25/11/2016:

Simulation: Simulation_test11.py.txt

  • Can generate background mean (or standard deviation) using taylor series:
 \begin{equation} f\left ( x;a_{ij} \right ) = \sum_{i=0}^{N_{i}} \sum_{j=0}^{N_{j}} \frac{a_{ij}}{i!j!} \left ( x-x_{0} \right )^{i} \left ( y-y_{0} \right )^{j} \end{equation}
  • In order to get parameters, set up code to do a fit over an array of values using the expansion, up to a set number of terms.
  • First applied fit directly to image of M103 from observation 1, up to 25 terms:
  • LEFT: original image, M103. RIGHT: taylor series fit (25 terms)
  • M103_VIS_60S.pngM103_Simtest_BGmean_3.png
  • Then applied median analysis to frame first, then attempted fit (25 terms):
  • LEFT: Median filter for M103. RIGHT: taylor series fit (25 terms)
  • M103_Median_65box.pngM103_Simtest_BGmean_2.png
  • Attempted to fit up to 100 terms - failed.
Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng DoubleCluster_200s_blue_5stack.png r1 manage 1074.2 K 01 Dec 2016 - 09:53 AaronAndrews Double Cluster (blue) stacked
PNGpng M103_Median_65box.png r1 manage 92.9 K 02 Dec 2016 - 00:03 AaronAndrews M103 median
Texttxt M103_Simtest_BG_2.txt r1 manage 0.7 K 02 Dec 2016 - 00:07 AaronAndrews median background fit - parameters
Texttxt M103_Simtest_BG_3.txt r1 manage 0.7 K 02 Dec 2016 - 00:07 AaronAndrews direct background fit - parameters
PNGpng M103_Simtest_BGmean_2.png r1 manage 100.6 K 01 Dec 2016 - 23:59 AaronAndrews Background mean using median
PNGpng M103_Simtest_BGmean_3.png r1 manage 132.2 K 01 Dec 2016 - 23:59 AaronAndrews Background mean using raw image
Unknown file formatfits M103_Simtest_starsBG_3.fits r1 manage 12195.0 K 02 Dec 2016 - 00:03 AaronAndrews M103 simulation plus background directly from real image
PNGpng M103_VIS_60S.png r1 manage 1533.2 K 02 Dec 2016 - 00:06 AaronAndrews M103 - real image
Compressed Zip archivezip Obs2_images_stacked.zip r1 manage 20147.7 K 01 Dec 2016 - 09:44 AaronAndrews Observation2 - stacked images
Texttxt Simulation_test11.py.txt r1 manage 32.0 K 01 Dec 2016 - 23:05 AaronAndrews Simulation code (11)
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Topic revision: r3 - 02 Dec 2016 - AaronAndrews

 
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