Difference: StewartBoogertPhotometry20170222 (1 vs. 5)

Revision 522 Feb 2017 - LauraBevilacqua

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
Note: last week, report segments requested in place of usual weekly update.
Line: 13 to 13
 Scaled Errors
  • Error on magnitudes now involves scaling parameters
Changed:
<
<

  • CodeCogsEqn_5.gif
>
>

  • CodeCogsEqn_5.gif
 
  • where m is the initial magnitude before scaling, c is the intercept in the linear fit (from last meeting) and g is the gradient of the linear fit
  • Laura - m_scaled.pdf
Changed:
<
<
  • Double Cluster HR of a single frame:
    DoubleSingleFrameHR.png
>
>
  • Double Cluster HR of a single frame:
    DoubleSingleFrameHR.png
 
  • 96 stars, maximum mag = 13.623
Changed:
<
<
  • Double Cluster HR of a stacked frame:
    DoubleStackedFramesHR.png
>
>
  • Double Cluster HR of a stacked frame:
    DoubleStackedFramesHR.png
 
  • 85 stars, maximum magnitude = 13.300
  • Lower star count in stacked frames possibly due to the stacking of read-out noise in each frame
Changed:
<
<
>
>
  • Dragonfly Cluster HR using scaling parameters from the Double Cluster
dragonflyHR_dbclParams.png
  • Dragonfly Cluster HR using dragonfly scaling parameters
dragonflyHR_dragonflyParams.png
 

META FILEATTACHMENT attachment="Offset_Parameters.pdf" attr="" comment="Report segment - offset parameters" date="1487632817" name="Offset_Parameters.pdf" path="Offset Parameters.pdf" size="107422" user="zyva010" version="1"
Line: 36 to 39
 
META FILEATTACHMENT attachment="CodeCogsEqn_5.gif" attr="" comment="" date="1487712056" name="CodeCogsEqn_5.gif" path="CodeCogsEqn_5.gif" size="2077" user="zyva858" version="1"
META FILEATTACHMENT attachment="210217.pdf" attr="" comment="Real data analysis" date="1487712523" name="210217.pdf" path="210217.pdf" size="1451003" user="zyva858" version="1"
META FILEATTACHMENT attachment="m_scaled.pdf" attr="" comment="magnitude scaling with fit parameters, and error" date="1487719320" name="m_scaled.pdf" path="m_scaled.pdf" size="167915" user="zyvb786" version="2"
Added:
>
>
META FILEATTACHMENT attachment="dragonflyHR_dbclParams.png" attr="" comment="dragonfly hr with dbcl params" date="1487760830" name="dragonflyHR_dbclParams.png" path="dragonflyHR_dbclParams.png" size="69982" user="zyvb786" version="1"
META FILEATTACHMENT attachment="dragonflyHR_dragonflyParams.png" attr="" comment="dragonfly hr with dragonfly params" date="1487760870" name="dragonflyHR_dragonflyParams.png" path="dragonflyHR_dragonflyParams.png" size="67813" user="zyvb786" version="1"

Revision 421 Feb 2017 - LauraBevilacqua

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
Note: last week, report segments requested in place of usual weekly update.
Line: 14 to 14
 
  • Error on magnitudes now involves scaling parameters


  • CodeCogsEqn_5.gif
Changed:
<
<
  • where m is the magnitudes plotted in the HR diagram, c in the intercept in the linear fit (from last meeting) and g is the gradient of the linear fit
>
>
  • where m is the initial magnitude before scaling, c is the intercept in the linear fit (from last meeting) and g is the gradient of the linear fit
  • Laura - m_scaled.pdf
 
  • Double Cluster HR of a single frame:
    DoubleSingleFrameHR.png
Line: 34 to 35
 
META FILEATTACHMENT attachment="latexab9975fa55bf89b822404cf84ae20ca9.png" attr="h" comment="" date="1487711999" name="latexab9975fa55bf89b822404cf84ae20ca9.png" user="zyva858" version="1"
META FILEATTACHMENT attachment="CodeCogsEqn_5.gif" attr="" comment="" date="1487712056" name="CodeCogsEqn_5.gif" path="CodeCogsEqn_5.gif" size="2077" user="zyva858" version="1"
META FILEATTACHMENT attachment="210217.pdf" attr="" comment="Real data analysis" date="1487712523" name="210217.pdf" path="210217.pdf" size="1451003" user="zyva858" version="1"
Added:
>
>
META FILEATTACHMENT attachment="m_scaled.pdf" attr="" comment="magnitude scaling with fit parameters, and error" date="1487719320" name="m_scaled.pdf" path="m_scaled.pdf" size="167915" user="zyvb786" version="2"

Revision 321 Feb 2017 - AnishaVadher

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
Note: last week, report segments requested in place of usual weekly update.
Line: 12 to 12
 
  • Performed modified least squares fit.
Scaled Errors
  • Error on magnitudes now involves scaling parameters
Deleted:
<
<
%BEGINLATEX%
 
Changed:
<
<
\begin{equation}
>
>

  • CodeCogsEqn_5.gif
  • where m is the magnitudes plotted in the HR diagram, c in the intercept in the linear fit (from last meeting) and g is the gradient of the linear fit
 
Changed:
<
<
{\Delta m_{\rm scaled}} = m_{\rm scaled} \sqrt{\left\frac{\Delta m^{2}+\Delta c^{2}}{(m-c)^{2}}\right + \frac{\Delta g^{2}}{g^{2}}\right}
>
>
  • Double Cluster HR of a single frame:
    DoubleSingleFrameHR.png
 
Changed:
<
<
\end{equation}
>
>
  • 96 stars, maximum mag = 13.623
 
Changed:
<
<
%ENDLATEX%
>
>
  • Double Cluster HR of a stacked frame:
    DoubleStackedFramesHR.png
  • 85 stars, maximum magnitude = 13.300
  • Lower star count in stacked frames possibly due to the stacking of read-out noise in each frame
 
Changed:
<
<
-- AaronAndrews - 20 Feb 2017
>
>
 
META FILEATTACHMENT attachment="Offset_Parameters.pdf" attr="" comment="Report segment - offset parameters" date="1487632817" name="Offset_Parameters.pdf" path="Offset Parameters.pdf" size="107422" user="zyva010" version="1"
Added:
>
>
META FILEATTACHMENT attachment="DoubleSingleFrameHR.pdf" attr="" comment="Double Cluster HR of a single frame" date="1487711189" name="DoubleSingleFrameHR.pdf" path="DoubleSingleFrameHR.pdf" size="74061" user="zyva858" version="1"
META FILEATTACHMENT attachment="DoubleStackedFramesHR.pdf" attr="" comment="Double Cluster HR of a stacked frame" date="1487711244" name="DoubleStackedFramesHR.pdf" path="DoubleStackedFramesHR.pdf" size="73355" user="zyva858" version="1"
META FILEATTACHMENT attachment="DoubleStackedFramesHR.png" attr="" comment="Double Cluster HR of a stacked frame" date="1487711295" name="DoubleStackedFramesHR.png" path="DoubleStackedFramesHR.png" size="49543" user="zyva858" version="1"
META FILEATTACHMENT attachment="DoubleSingleFrameHR.png" attr="" comment="Double Cluster HR of a single frame" date="1487711479" name="DoubleSingleFrameHR.png" path="DoubleSingleFrameHR.png" size="49146" user="zyva858" version="1"
META FILEATTACHMENT attachment="latexab9975fa55bf89b822404cf84ae20ca9.png" attr="h" comment="" date="1487711999" name="latexab9975fa55bf89b822404cf84ae20ca9.png" user="zyva858" version="1"
META FILEATTACHMENT attachment="CodeCogsEqn_5.gif" attr="" comment="" date="1487712056" name="CodeCogsEqn_5.gif" path="CodeCogsEqn_5.gif" size="2077" user="zyva858" version="1"
META FILEATTACHMENT attachment="210217.pdf" attr="" comment="Real data analysis" date="1487712523" name="210217.pdf" path="210217.pdf" size="1451003" user="zyva858" version="1"

Revision 221 Feb 2017 - LauraBevilacqua

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
Note: last week, report segments requested in place of usual weekly update.
Line: 10 to 10
 
  • Matched ~30 brightest stars for each image in the Dragonfly cluster (blue filter), comparing to first image in set.
  • Constructed chi-square to compare measured positions in one image to transformed measured positions in offset image.
  • Performed modified least squares fit.
Added:
>
>
Scaled Errors
  • Error on magnitudes now involves scaling parameters
  \begin{equation}  {\Delta m_{\rm scaled}} = m_{\rm scaled} \sqrt{\left\frac{\Delta m^{2}+\Delta c^{2}}{(m-c)^{2}}\right + \frac{\Delta g^{2}}{g^{2}}\right}   <span style=&amp;quot;background-color: transparent;&amp;quot;>\end{equation} </span>

Latex rendering error!! dvi file was not created.
  -- AaronAndrews - 20 Feb 2017

Revision 120 Feb 2017 - AaronAndrews

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="StewartBoogertPhotometry2016"
Note: last week, report segments requested in place of usual weekly update.

Aaron - Image offset parameter investigation: Offset_Parameters.pdf

Summary:

  • Needed to determine accurate offsets (position and rotation transform) of images.
  • Matched ~30 brightest stars for each image in the Dragonfly cluster (blue filter), comparing to first image in set.
  • Constructed chi-square to compare measured positions in one image to transformed measured positions in offset image.
  • Performed modified least squares fit.

-- AaronAndrews - 20 Feb 2017

META FILEATTACHMENT attachment="Offset_Parameters.pdf" attr="" comment="Report segment - offset parameters" date="1487632817" name="Offset_Parameters.pdf" path="Offset Parameters.pdf" size="107422" user="zyva010" version="1"
 
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