Difference: StewartBoogertPhotometry20172020 (1 vs. 5)

Revision 522 Oct 2017 - RebekahChafer1

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2017"
Added error bars to the Histogram

Revision 420 Oct 2017 - RebekahChafer1

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2017"
Added error bars to the Histogram
Line: 28 to 28
  SigmaVsExposurefit_-15.png
Added:
>
>
When the range was default over all data, histograms were plotted like this (see below), and the range and number of bins had to be input for each individual image. Autorange.png

When we automated the range choice, we received this comb effect

CombEffect.PNG

which caused our fit to skew downwards due to the zeros in some of the bins. We found that this was due to the histogram data being integers and the bin width being <1. Therefore, there wasn't an integer value in every bin. This was accounted for by making an automatic number of bins.

Fitted_Histogram.png

 -- Public.LunaBorella - 19 Oct 2017

META FILEATTACHMENT attachment="meanVsExposurefit2.png" attr="" comment="" date="1508424106" name="meanVsExposurefit2.png" path="meanVsExposurefit2.png" size="33597" user="zavc160" version="1"
Line: 36 to 46
 
META FILEATTACHMENT attachment="SigmaVsExposurefit_-15.png" attr="" comment="" date="1508431993" name="SigmaVsExposurefit_-15.png" path="SigmaVsExposurefit_-15.png" size="28070" user="zavc160" version="1"
META FILEATTACHMENT attachment="001Gaussianerror.png" attr="" comment="" date="1508496876" name="001Gaussianerror.png" path="001Gaussianerror.png" size="31943" user="zavc160" version="2"
META FILEATTACHMENT attachment="001GaussianerrorClose.PNG" attr="" comment="" date="1508496979" name="001GaussianerrorClose.PNG" path="001GaussianerrorClose.PNG" size="24612" user="zavc160" version="1"
Added:
>
>
META FILEATTACHMENT attachment="Autorange.png" attr="" comment="Histogram of Dark frame with default range" date="1508497853" name="Autorange.png" path="Autorange.png" size="34758" user="zavc984" version="1"
META FILEATTACHMENT attachment="CombEffect.PNG" attr="" comment="Histogram with range automatically chosen, which caused this comb effect." date="1508497885" name="CombEffect.PNG" path="CombEffect.PNG" size="29188" user="zavc984" version="1"
META FILEATTACHMENT attachment="Fitted_Histogram.png" attr="" comment="Fitted histogram with automatic bin sizes and automatic range" date="1508498463" name="Fitted_Histogram.png" path="Fitted Histogram.png" size="33981" user="zavc984" version="1"

Revision 320 Oct 2017 - LunaMarieBorella1

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2017"
Added:
>
>
Added error bars to the Histogram

001Gaussianerror.png

Error bars are small

001GaussianerrorClose.PNG

 We plotted the new hypothesis mean = mean0 + mu*t , however since our data was all over the place we used the last years dark frames that were at a constant temp 5 degrees which is much better that the -15 degrees. below is the graph of both those tempratures

This is -5 degrees

Line: 26 to 34
 
META FILEATTACHMENT attachment="meanVsExposurefit_-15.png" attr="" comment="" date="1508424114" name="meanVsExposurefit_-15.png" path="meanVsExposurefit_-15.png" size="26092" user="zavc160" version="1"
META FILEATTACHMENT attachment="SigmaVsExposurefit_-5.png" attr="" comment="" date="1508431862" name="SigmaVsExposurefit_-5.png" path="SigmaVsExposurefit_-5.png" size="32337" user="zavc160" version="1"
META FILEATTACHMENT attachment="SigmaVsExposurefit_-15.png" attr="" comment="" date="1508431993" name="SigmaVsExposurefit_-15.png" path="SigmaVsExposurefit_-15.png" size="28070" user="zavc160" version="1"
Added:
>
>
META FILEATTACHMENT attachment="001Gaussianerror.png" attr="" comment="" date="1508496876" name="001Gaussianerror.png" path="001Gaussianerror.png" size="31943" user="zavc160" version="2"
META FILEATTACHMENT attachment="001GaussianerrorClose.PNG" attr="" comment="" date="1508496979" name="001GaussianerrorClose.PNG" path="001GaussianerrorClose.PNG" size="24612" user="zavc160" version="1"

Revision 219 Oct 2017 - LunaMarieBorella1

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2017"
Changed:
<
<
We plotted the new hypothesis mean = mean0 + mu*t , however since our data was all over the place we used the last years dark frames that were at a constant temp -5 degrees which is much better that the -15 degrees. below is the graph of both those tempratures
>
>
We plotted the new hypothesis mean = mean0 + mu*t , however since our data was all over the place we used the last years dark frames that were at a constant temp 5 degrees which is much better that the -15 degrees. below is the graph of both those tempratures
  This is -5 degrees
Line: 10 to 10
  meanVsExposurefit_-15.png
Added:
>
>
The same thing was done with the new sigma fit sigma = sqrt(mu*t + simga_0)

temp 5 degrees

SigmaVsExposurefit_-5.png

temp -15 degree

SigmaVsExposurefit_-15.png

 -- Public.LunaBorella - 19 Oct 2017

META FILEATTACHMENT attachment="meanVsExposurefit2.png" attr="" comment="" date="1508424106" name="meanVsExposurefit2.png" path="meanVsExposurefit2.png" size="33597" user="zavc160" version="1"
META FILEATTACHMENT attachment="meanVsExposurefit_-15.png" attr="" comment="" date="1508424114" name="meanVsExposurefit_-15.png" path="meanVsExposurefit_-15.png" size="26092" user="zavc160" version="1"
Added:
>
>
META FILEATTACHMENT attachment="SigmaVsExposurefit_-5.png" attr="" comment="" date="1508431862" name="SigmaVsExposurefit_-5.png" path="SigmaVsExposurefit_-5.png" size="32337" user="zavc160" version="1"
META FILEATTACHMENT attachment="SigmaVsExposurefit_-15.png" attr="" comment="" date="1508431993" name="SigmaVsExposurefit_-15.png" path="SigmaVsExposurefit_-15.png" size="28070" user="zavc160" version="1"

Revision 119 Oct 2017 - LunaMarieBorella1

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="StewartBoogertPhotometry2017"
We plotted the new hypothesis mean = mean0 + mu*t , however since our data was all over the place we used the last years dark frames that were at a constant temp -5 degrees which is much better that the -15 degrees. below is the graph of both those tempratures

This is -5 degrees

meanVsExposurefit2.png

This is -15 degrees

meanVsExposurefit_-15.png

-- Public.LunaBorella - 19 Oct 2017

META FILEATTACHMENT attachment="meanVsExposurefit2.png" attr="" comment="" date="1508424106" name="meanVsExposurefit2.png" path="meanVsExposurefit2.png" size="33597" user="zavc160" version="1"
META FILEATTACHMENT attachment="meanVsExposurefit_-15.png" attr="" comment="" date="1508424114" name="meanVsExposurefit_-15.png" path="meanVsExposurefit_-15.png" size="26092" user="zavc160" version="1"
 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2021 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