Difference: StewartBoogertPhotometry20161028 (1 vs. 6)

Revision 628 Oct 2016 - AnishaVadher

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- AaronAndrews - 25 Oct 2016

To do by Friday:

  • Anisha:
Added:
>
>
    • Fit sqrt(sigma0^2 + lambda*t) to the fitted standard deviation as a function of exposure time plot
 
  • Aaron:
    • Simulate background.
    • Generate stars in fiducial volume around frame.
Line: 14 to 15
  Anisha:
Added:
>
>
* Histogram of a dark frame 0.1s exposure:
HistogramForDarkFrame0.1Exposure.png

  • The fitted mean and fitted sigma as a function of exposure time:
    MeanAndSigmaAsAFunctionOfExposureTime.png

  • The mean as a function of exposure time is linearly fitted with nu_0 + mu*t
  • Parameters obtained:
  • Nu0: 917.858645977
  • Mu: 0.0759400473796
  • The sigma as a function of exposure time is fitted with sqrt(sigma0^2 + lambda*t)
  • Parameters obtained:
  • Lambda: 0.0364088264173
  • Sigma0: 6.44315650804
 Aaron:

Line: 52 to 67
 
META FILEATTACHMENT attachment="RandStarField1a.txt" attr="" comment="Generated star parameters for random star field 1a" date="1477558604" name="RandStarField1a.txt" path="RandStarField1a.txt" size="5543" user="zyva010" version="1"
META FILEATTACHMENT attachment="RandStarField1b.txt" attr="" comment="Generated star parameters for random star field 1b" date="1477558622" name="RandStarField1b.txt" path="RandStarField1b.txt" size="5536" user="zyva010" version="1"
META FILEATTACHMENT attachment="StarFinder.txt" attr="" comment="Star finding code" date="1477651799" name="StarFinder.txt" path="StarFinder.txt" size="3001" user="zyvb786" version="1"
Added:
>
>
META FILEATTACHMENT attachment="HistogramForDarkFrame0.1Exposure.png" attr="" comment="Histogram of a dark frame 0.1s exposure" date="1477657351" name="HistogramForDarkFrame0.1Exposure.png" path="HistogramForDarkFrame0.1Exposure.png" size="31582" user="zyva858" version="1"
META FILEATTACHMENT attachment="FittedMeanAsAFunctionOfExposureTime.png" attr="" comment="Fitted mean as a function of exposure time" date="1477657511" name="FittedMeanAsAFunctionOfExposureTime.png" path="FittedMeanAsAFunctionOfExposureTime.png" size="37015" user="zyva858" version="1"
META FILEATTACHMENT attachment="MeanAndSigmaAsAFunctionOfExposureTime.png" attr="" comment="The fitted mean and fitted sigma as a function of exposure time" date="1477658342" name="MeanAndSigmaAsAFunctionOfExposureTime.png" path="MeanAndSigmaAsAFunctionOfExposureTime.png" size="60688" user="zyva858" version="1"

Revision 528 Oct 2016 - AaronAndrews

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- AaronAndrews - 25 Oct 2016
Line: 34 to 34
 
    • Sigma_y: [3,6]
    • Rho: [-0.5,0.5]
    • Peak value: [0,2000]
Changed:
<
<
  • RandStarField1a.png
>
>
  • RandStarField1a.png
 
  • Star parameters: RandStarField1a.txt
  • Alternative generation, estimating 300 second exposure, maximum s/b~60:
    • Background mean: 941.43
    • Background S.D.: 234.76
    • Peak value range: [0,60000]
Changed:
<
<
  • RandStarField1b.png
>
>
  • RandStarField1b.png
  Laura:
  • Code: StarFinder.txt
  • Program now stores all coordinates in a star, mean pixel values (count) of the star used to calculate star flux

Changed:
<
<
META FILEATTACHMENT attachment="RandStarField1a.png" attr="" comment="Random star field simulation, estimating 10 second exposure" date="1477560840" name="RandStarField1a.png" path="RandStarField1a.png" size="147189" user="zyva010" version="2"
META FILEATTACHMENT attachment="RandStarField1b.png" attr="" comment="Random star field simulation, estimating 300 second exposure" date="1477560852" name="RandStarField1b.png" path="RandStarField1b.png" size="111009" user="zyva010" version="2"
>
>
META FILEATTACHMENT attachment="RandStarField1a.png" attr="" comment="Random star field simulation, estimating 10 second exposure" date="1477654481" name="RandStarField1a.png" path="Y:\PH4100\Images_s\RandStarField1a.png" size="485982" user="zyva010" version="3"
META FILEATTACHMENT attachment="RandStarField1b.png" attr="" comment="Random star field simulation, estimating 300 second exposure" date="1477654502" name="RandStarField1b.png" path="Y:\PH4100\Images_s\RandStarField1b.png" size="361453" user="zyva010" version="3"
 
META FILEATTACHMENT attachment="Simulation_test6.py.txt" attr="" comment="Simulation test 6 code" date="1477558389" name="Simulation_test6.py.txt" path="Simulation_test6.py" size="11169" user="zyva010" version="1"
META FILEATTACHMENT attachment="RandStarField1a.txt" attr="" comment="Generated star parameters for random star field 1a" date="1477558604" name="RandStarField1a.txt" path="RandStarField1a.txt" size="5543" user="zyva010" version="1"
META FILEATTACHMENT attachment="RandStarField1b.txt" attr="" comment="Generated star parameters for random star field 1b" date="1477558622" name="RandStarField1b.txt" path="RandStarField1b.txt" size="5536" user="zyva010" version="1"

Revision 428 Oct 2016 - LauraBevilacqua

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- AaronAndrews - 25 Oct 2016
Line: 8 to 8
 
    • Simulate background.
    • Generate stars in fiducial volume around frame.
    • Generate full size star field (1530x1020), use uniform randomised values for all star variables (positions, fluxes, sigmas, correlation).
Changed:
<
<
  • Laura: Fix Starfinding code, attempt to calculate star flux
>
>
  • Laura:
    • Fix star-finding code, attempt to calculate flux for each star
 Weekly Progress:

Anisha:

Line: 43 to 44
  Laura:
Changed:
<
<
  • Program now stores all coordinates in a star, mean pixel values of the star used to calculate star flux
>
>
  • Program now stores all coordinates in a star, mean pixel values (count) of the star used to calculate star flux

 
META FILEATTACHMENT attachment="RandStarField1a.png" attr="" comment="Random star field simulation, estimating 10 second exposure" date="1477560840" name="RandStarField1a.png" path="RandStarField1a.png" size="147189" user="zyva010" version="2"
META FILEATTACHMENT attachment="RandStarField1b.png" attr="" comment="Random star field simulation, estimating 300 second exposure" date="1477560852" name="RandStarField1b.png" path="RandStarField1b.png" size="111009" user="zyva010" version="2"
META FILEATTACHMENT attachment="Simulation_test6.py.txt" attr="" comment="Simulation test 6 code" date="1477558389" name="Simulation_test6.py.txt" path="Simulation_test6.py" size="11169" user="zyva010" version="1"
META FILEATTACHMENT attachment="RandStarField1a.txt" attr="" comment="Generated star parameters for random star field 1a" date="1477558604" name="RandStarField1a.txt" path="RandStarField1a.txt" size="5543" user="zyva010" version="1"
META FILEATTACHMENT attachment="RandStarField1b.txt" attr="" comment="Generated star parameters for random star field 1b" date="1477558622" name="RandStarField1b.txt" path="RandStarField1b.txt" size="5536" user="zyva010" version="1"
Changed:
<
<
META FILEATTACHMENT attachment="StarFinder.txt" attr="" comment="StarFinder code" date="1477596298" name="StarFinder.txt" path="StarFinder.txt" size="2486" user="zyvb786" version="1"
>
>
META FILEATTACHMENT attachment="StarFinder.txt" attr="" comment="Star finding code" date="1477651799" name="StarFinder.txt" path="StarFinder.txt" size="3001" user="zyvb786" version="1"

Revision 327 Oct 2016 - LauraBevilacqua

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- AaronAndrews - 25 Oct 2016
Line: 8 to 8
 
    • Simulate background.
    • Generate stars in fiducial volume around frame.
    • Generate full size star field (1530x1020), use uniform randomised values for all star variables (positions, fluxes, sigmas, correlation).
Changed:
<
<
  • Laura:
>
>
  • Laura: Fix Starfinding code, attempt to calculate star flux
 Weekly Progress:

Anisha:

Line: 42 to 41
 
Deleted:
<
<
 Laura:
Added:
>
>
  • Code: StarFinder.txt
  • Program now stores all coordinates in a star, mean pixel values of the star used to calculate star flux
 
META FILEATTACHMENT attachment="RandStarField1a.png" attr="" comment="Random star field simulation, estimating 10 second exposure" date="1477560840" name="RandStarField1a.png" path="RandStarField1a.png" size="147189" user="zyva010" version="2"
META FILEATTACHMENT attachment="RandStarField1b.png" attr="" comment="Random star field simulation, estimating 300 second exposure" date="1477560852" name="RandStarField1b.png" path="RandStarField1b.png" size="111009" user="zyva010" version="2"
META FILEATTACHMENT attachment="Simulation_test6.py.txt" attr="" comment="Simulation test 6 code" date="1477558389" name="Simulation_test6.py.txt" path="Simulation_test6.py" size="11169" user="zyva010" version="1"
META FILEATTACHMENT attachment="RandStarField1a.txt" attr="" comment="Generated star parameters for random star field 1a" date="1477558604" name="RandStarField1a.txt" path="RandStarField1a.txt" size="5543" user="zyva010" version="1"
META FILEATTACHMENT attachment="RandStarField1b.txt" attr="" comment="Generated star parameters for random star field 1b" date="1477558622" name="RandStarField1b.txt" path="RandStarField1b.txt" size="5536" user="zyva010" version="1"
Added:
>
>
META FILEATTACHMENT attachment="StarFinder.txt" attr="" comment="StarFinder code" date="1477596298" name="StarFinder.txt" path="StarFinder.txt" size="2486" user="zyvb786" version="1"

Revision 227 Oct 2016 - AaronAndrews

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- AaronAndrews - 25 Oct 2016
Line: 9 to 9
 
    • Generate stars in fiducial volume around frame.
    • Generate full size star field (1530x1020), use uniform randomised values for all star variables (positions, fluxes, sigmas, correlation).
  • Laura:
\ No newline at end of file
Added:
>
>
Weekly Progress:

Anisha:

Aaron:

  • Simulation code: Simulation_test6.py.txt
  • Added generation of background to simulation. Assumed background values follow gaussian distribution - Python has a random gaussian generator with mean and S.D. as inputs.
  • Stars can be generated outside of image frame (up to 15 pixels from edge).
  • Randomly generated star parameters can be saved in text files.

  • Generated a full-size star field, making estimates for some values/ranges for a 10 second exposure, and maximum signal/background ~2.
  • Properties:
    • Size: 1530x1020
    • Stars in frame: 50
    • Background mean: 918.23
    • Background S.D.: 23.06
  • Random parameter ranges (uniformly distributed):
    • Peak x position: [-15,1544]
    • Peak y position: [-15,1034]
    • Sigma_x: [3,6]
    • Sigma_y: [3,6]
    • Rho: [-0.5,0.5]
    • Peak value: [0,2000]
  • RandStarField1a.png
  • Star parameters: RandStarField1a.txt
  • Alternative generation, estimating 300 second exposure, maximum s/b~60:
    • Background mean: 941.43
    • Background S.D.: 234.76
    • Peak value range: [0,60000]
  • RandStarField1b.png
  • Star Parameters: RandStarField1b.txt

Laura:

META FILEATTACHMENT attachment="RandStarField1a.png" attr="" comment="Random star field simulation, estimating 10 second exposure" date="1477560840" name="RandStarField1a.png" path="RandStarField1a.png" size="147189" user="zyva010" version="2"
META FILEATTACHMENT attachment="RandStarField1b.png" attr="" comment="Random star field simulation, estimating 300 second exposure" date="1477560852" name="RandStarField1b.png" path="RandStarField1b.png" size="111009" user="zyva010" version="2"
META FILEATTACHMENT attachment="Simulation_test6.py.txt" attr="" comment="Simulation test 6 code" date="1477558389" name="Simulation_test6.py.txt" path="Simulation_test6.py" size="11169" user="zyva010" version="1"
META FILEATTACHMENT attachment="RandStarField1a.txt" attr="" comment="Generated star parameters for random star field 1a" date="1477558604" name="RandStarField1a.txt" path="RandStarField1a.txt" size="5543" user="zyva010" version="1"
META FILEATTACHMENT attachment="RandStarField1b.txt" attr="" comment="Generated star parameters for random star field 1b" date="1477558622" name="RandStarField1b.txt" path="RandStarField1b.txt" size="5536" user="zyva010" version="1"

Revision 125 Oct 2016 - AaronAndrews

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- AaronAndrews - 25 Oct 2016

To do by Friday:

  • Anisha:
  • Aaron:
    • Simulate background.
    • Generate stars in fiducial volume around frame.
    • Generate full size star field (1530x1020), use uniform randomised values for all star variables (positions, fluxes, sigmas, correlation).
  • Laura:
 
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