Difference: StewartBoogertPhotometry20170208 (1 vs. 9)

Revision 915 Feb 2017 - LauraBevilacqua

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- Public.AnishaVadher - 06 Feb 2017

Scaling Correction

  • Transforming from RA/DEC into pixel coordinates:
Changed:
<
<
  • CodeCogsEqn_2.gif
>
>
  • CodeCogsEqn_2.gif
 
  • where M^-1 [pixels/degrees] is the inverse of the transformation matrix given in the header of the fits file of the image along with the reference coordinates in pixels and degrees
Changed:
<
<
  • Transformation matrix applied to 5 stars in frame:
    Transformation5stars.png
  • Multiplied the horizontal transformation by factor n:
    CodeCogsEqn_3.gif
>
>
  • Transformation matrix applied to 5 stars in frame:
    Transformation5stars.png
  • Multiplied the horizontal transformation by factor n:
    CodeCogsEqn_3.gif
 
  • Set n = 1.85 to match up stars
Changed:
<
<
  • Stars matched up with accurate pixel coordinates:
    Matched5stars.png
>
>
  • Stars matched up with accurate pixel coordinates:
    Matched5stars.png
 
  • Table of stars plotted on diagram
Star RA/DEC [Deg] V Pixel V Mag B Pixel B Mag
1 35.480983, 57.242918 912.56, 176.98 6.39 917.95, 173.75 6.97
2 35.722909, 57.245152 138.28, 141.41 7.45 143.55, 137.99 8.16
3 35.601206, 57.109481 503.97, 956.29 7.82 509.01, 952.82 10.09
4 35.754022, 57.121345 16.74, 871.90 11.93 21.72, 868.32 12.39
5 35.380351, 57.103321 1210.09, 1013.19 10.99 1215.22, 1009.87 11.11
Line: 23 to 23
 
  • Expected 769 stars in the single frames
  • Couldn't get to a threshold lower than n=4 for stacked frames (whole image was flooded)
  • Stacked frames have improved purity and efficiency over single frames, will choose to stack frames for real data
Changed:
<
<
  • DBCL_ROC_sim_blue_comp.png
DBCL_ROC_sim_vis_comp.png
>
>
  • DBCL_ROC_sim_vis_comp.png
  • DBCL_ROC_sim_blue_comp.png
 Stacking Non-aligned Images (Drizzle Algorithm)

  • Images of the Dragonfly cluster from observation 2 are not aligned.
Line: 43 to 42
 
  • Additional note: brightest star in simulated double cluster doesn't exist?
  • Real stars match up well vertically with simulated data without it in comparison to with it (shown in 20170119 meeting)
Changed:
<
<

  • Real Double Cluster without brightest star data:
    RealDoubleHR.png
>
>
  • Real Double Cluster without brightest star data:
    RealDoubleHR.png
 
META FILEATTACHMENT attachment="CodeCogsEqn_2.gif" attr="" comment="" date="1486480213" name="CodeCogsEqn_2.gif" path="CodeCogsEqn_2.gif" size="3043" user="zyva858" version="2"
META FILEATTACHMENT attachment="Transformation10stars.png" attr="" comment="Transformation applied to 10 stars" date="1486399474" name="Transformation10stars.png" path="Transformation10stars.png" size="1246399" user="zyva858" version="1"
Line: 56 to 52
 
META FILEATTACHMENT attachment="Transformation5stars.png" attr="" comment="Transformation matrix applied to 5 stars in frame" date="1486480092" name="Transformation5stars.png" path="Transformation5stars.png" size="1201872" user="zyva858" version="1"
META FILEATTACHMENT attachment="CodeCogsEqn_3.gif" attr="" comment="Multiplied the horizontal transformation by factor n" date="1486480594" name="CodeCogsEqn_3.gif" path="CodeCogsEqn_3.gif" size="1884" user="zyva858" version="1"
META FILEATTACHMENT attachment="Matched5stars.png" attr="" comment="Stars matched up with accurate pixel coordinates" date="1486480762" name="Matched5stars.png" path="Matched5stars.png" size="418840" user="zyva858" version="1"
Changed:
<
<
META FILEATTACHMENT attachment="DBCL_ROC_sim_blue_comp.png" attr="" comment="ROC curves for blue and visible Double Cluster simulations" date="1486499462" name="DBCL_ROC_sim_blue_comp.png" path="DBCL_ROC_sim_blue_comp.png" size="49240" user="zyvb786" version="1"
META FILEATTACHMENT attachment="DBCL_ROC_sim_vis_comp.png" attr="" comment="ROC curves for blue and visible Double Cluster simulations" date="1486499462" name="DBCL_ROC_sim_vis_comp.png" path="DBCL_ROC_sim_vis_comp.png" size="48085" user="zyvb786" version="1"
>
>
META FILEATTACHMENT attachment="DBCL_ROC_sim_blue_comp.png" attr="" comment="ROC curves" date="1487173389" name="DBCL_ROC_sim_blue_comp.png" path="DBCL_ROC_sim_blue_comp.png" size="48840" user="zyvb786" version="2"
META FILEATTACHMENT attachment="DBCL_ROC_sim_vis_comp.png" attr="" comment="ROC curves" date="1487173389" name="DBCL_ROC_sim_vis_comp.png" path="DBCL_ROC_sim_vis_comp.png" size="48098" user="zyvb786" version="2"
 
META FILEATTACHMENT attachment="purity_efficiency_eqs.png" attr="" comment="p and e equations" date="1486500285" name="purity_efficiency_eqs.png" path="purity_efficiency_eqs.png" size="5239" user="zyvb786" version="1"
META FILEATTACHMENT attachment="RealDoubleHR.png" attr="" comment="Real Double Cluster without brightest star data" date="1486548932" name="RealDoubleHR.png" path="RealDoubleHR.png" size="65443" user="zyva858" version="1"

Revision 808 Feb 2017 - AnishaVadher

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- Public.AnishaVadher - 06 Feb 2017
Line: 40 to 40
  \end{equation} %ENDLATEX%
Changed:
<
<
*
>
>
  • Additional note: brightest star in simulated double cluster doesn't exist?
  • Real stars match up well vertically with simulated data without it in comparison to with it (shown in 20170119 meeting)

  • Real Double Cluster without brightest star data:
    RealDoubleHR.png
 
META FILEATTACHMENT attachment="CodeCogsEqn_2.gif" attr="" comment="" date="1486480213" name="CodeCogsEqn_2.gif" path="CodeCogsEqn_2.gif" size="3043" user="zyva858" version="2"
META FILEATTACHMENT attachment="Transformation10stars.png" attr="" comment="Transformation applied to 10 stars" date="1486399474" name="Transformation10stars.png" path="Transformation10stars.png" size="1246399" user="zyva858" version="1"
Line: 53 to 59
 
META FILEATTACHMENT attachment="DBCL_ROC_sim_blue_comp.png" attr="" comment="ROC curves for blue and visible Double Cluster simulations" date="1486499462" name="DBCL_ROC_sim_blue_comp.png" path="DBCL_ROC_sim_blue_comp.png" size="49240" user="zyvb786" version="1"
META FILEATTACHMENT attachment="DBCL_ROC_sim_vis_comp.png" attr="" comment="ROC curves for blue and visible Double Cluster simulations" date="1486499462" name="DBCL_ROC_sim_vis_comp.png" path="DBCL_ROC_sim_vis_comp.png" size="48085" user="zyvb786" version="1"
META FILEATTACHMENT attachment="purity_efficiency_eqs.png" attr="" comment="p and e equations" date="1486500285" name="purity_efficiency_eqs.png" path="purity_efficiency_eqs.png" size="5239" user="zyvb786" version="1"
Added:
>
>
META FILEATTACHMENT attachment="RealDoubleHR.png" attr="" comment="Real Double Cluster without brightest star data" date="1486548932" name="RealDoubleHR.png" path="RealDoubleHR.png" size="65443" user="zyva858" version="1"

Revision 708 Feb 2017 - LauraBevilacqua

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- Public.AnishaVadher - 06 Feb 2017

Scaling Correction

  • Transforming from RA/DEC into pixel coordinates:
Changed:
<
<
  • CodeCogsEqn_2.gif
>
>
  • CodeCogsEqn_2.gif
 
  • where M^-1 [pixels/degrees] is the inverse of the transformation matrix given in the header of the fits file of the image along with the reference coordinates in pixels and degrees
Changed:
<
<
  • Transformation matrix applied to 5 stars in frame:
    Transformation5stars.png
  • Multiplied the horizontal transformation by factor n:
    CodeCogsEqn_3.gif
>
>
  • Transformation matrix applied to 5 stars in frame:
    Transformation5stars.png
  • Multiplied the horizontal transformation by factor n:
    CodeCogsEqn_3.gif
 
  • Set n = 1.85 to match up stars
Changed:
<
<
  • Stars matched up with accurate pixel coordinates:
    Matched5stars.png
>
>
  • Stars matched up with accurate pixel coordinates:
    Matched5stars.png
 
  • Table of stars plotted on diagram
Star RA/DEC [Deg] V Pixel V Mag B Pixel B Mag
1 35.480983, 57.242918 912.56, 176.98 6.39 917.95, 173.75 6.97
2 35.722909, 57.245152 138.28, 141.41 7.45 143.55, 137.99 8.16
3 35.601206, 57.109481 503.97, 956.29 7.82 509.01, 952.82 10.09
4 35.754022, 57.121345 16.74, 871.90 11.93 21.72, 868.32 12.39
5 35.380351, 57.103321 1210.09, 1013.19 10.99 1215.22, 1009.87 11.11

  • Next step - find stars n accociated magnitudes from star finding algorithm
Added:
>
>
Purity and Efficiency of Star-Finding Algorithm

purity_efficiency_eqs.png

  • Purity plotted against efficiency for single simulated images of the Double Cluster and stacked simulations (both with flat background) for 1.5<n<10
  • Expected 494 stars in the stacked frames
  • Expected 769 stars in the single frames
  • Couldn't get to a threshold lower than n=4 for stacked frames (whole image was flooded)
  • Stacked frames have improved purity and efficiency over single frames, will choose to stack frames for real data
  • DBCL_ROC_sim_blue_comp.png
DBCL_ROC_sim_vis_comp.png
  Stacking Non-aligned Images (Drizzle Algorithm)

Revision 607 Feb 2017 - LauraBevilacqua

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- Public.AnishaVadher - 06 Feb 2017
Line: 40 to 40
 
META FILEATTACHMENT attachment="Transformation5stars.png" attr="" comment="Transformation matrix applied to 5 stars in frame" date="1486480092" name="Transformation5stars.png" path="Transformation5stars.png" size="1201872" user="zyva858" version="1"
META FILEATTACHMENT attachment="CodeCogsEqn_3.gif" attr="" comment="Multiplied the horizontal transformation by factor n" date="1486480594" name="CodeCogsEqn_3.gif" path="CodeCogsEqn_3.gif" size="1884" user="zyva858" version="1"
META FILEATTACHMENT attachment="Matched5stars.png" attr="" comment="Stars matched up with accurate pixel coordinates" date="1486480762" name="Matched5stars.png" path="Matched5stars.png" size="418840" user="zyva858" version="1"
Added:
>
>
META FILEATTACHMENT attachment="DBCL_ROC_sim_blue_comp.png" attr="" comment="ROC curves for blue and visible Double Cluster simulations" date="1486499462" name="DBCL_ROC_sim_blue_comp.png" path="DBCL_ROC_sim_blue_comp.png" size="49240" user="zyvb786" version="1"
META FILEATTACHMENT attachment="DBCL_ROC_sim_vis_comp.png" attr="" comment="ROC curves for blue and visible Double Cluster simulations" date="1486499462" name="DBCL_ROC_sim_vis_comp.png" path="DBCL_ROC_sim_vis_comp.png" size="48085" user="zyvb786" version="1"
META FILEATTACHMENT attachment="purity_efficiency_eqs.png" attr="" comment="p and e equations" date="1486500285" name="purity_efficiency_eqs.png" path="purity_efficiency_eqs.png" size="5239" user="zyvb786" version="1"

Revision 507 Feb 2017 - AnishaVadher

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- Public.AnishaVadher - 06 Feb 2017

Scaling Correction

Changed:
<
<
  • Transforming from RA/DEC into pixel coordinates:
    CodeCogsEqn_2.gif
  • where M^-1 [pixels/degrees] is the inverse of the transformation matrix given in the header of the fits file of the image
  • Table of point plotted on diagram
  • Star V RA/DEC V Pixel V Mag B RA/DEC B Pixel B Mag
    1 35.480983,
    57.242918
    912.55794514]
    [ 176.97902537
    2 35.722909,
    57.245152
    3 35.601206,
    57.109481
    4 35.754022,
    57.121345
    5 35.380351,
    57.103321
    6 35.6244,
    57.207992
    7 35.518988,
    57.177487
    8 35.563302,
    57.161355
    9 35.540478,
    57.117322
    10 35.503986,
    57.137308
>
>
  • Transforming from RA/DEC into pixel coordinates:
  • CodeCogsEqn_2.gif
  • where M^-1 [pixels/degrees] is the inverse of the transformation matrix given in the header of the fits file of the image along with the reference coordinates in pixels and degrees

  • Transformation matrix applied to 5 stars in frame:
    Transformation5stars.png
  • Multiplied the horizontal transformation by factor n:
    CodeCogsEqn_3.gif
  • Set n = 1.85 to match up stars
  • Stars matched up with accurate pixel coordinates:
    Matched5stars.png
  • Table of stars plotted on diagram
Star RA/DEC [Deg] V Pixel V Mag B Pixel B Mag
1 35.480983, 57.242918 912.56, 176.98 6.39 917.95, 173.75 6.97
2 35.722909, 57.245152 138.28, 141.41 7.45 143.55, 137.99 8.16
3 35.601206, 57.109481 503.97, 956.29 7.82 509.01, 952.82 10.09
4 35.754022, 57.121345 16.74, 871.90 11.93 21.72, 868.32 12.39
5 35.380351, 57.103321 1210.09, 1013.19 10.99 1215.22, 1009.87 11.11

  • Next step - find stars n accociated magnitudes from star finding algorithm
 Stacking Non-aligned Images (Drizzle Algorithm)

  • Images of the Dragonfly cluster from observation 2 are not aligned.
Line: 20 to 29
 \textup{ADU}_{\textup{fill}}=\textup{ADU}_{\textup{input}} \times \frac{\textup{Area}\left ( \textup{overlap} \right )}{\textup{Area}\left ( \textup{input pixel} \right )}

\end{equation} %ENDLATEX%

Changed:
<
<
>
>
  *
Changed:
<
<
META FILEATTACHMENT attachment="CodeCogsEqn_2.gif" attr="" comment="Transforming from RA/DEC into pixel coordinates" date="1486398104" name="CodeCogsEqn_2.gif" path="CodeCogsEqn_2.gif" size="1483" user="zyva858" version="1"
>
>
META FILEATTACHMENT attachment="CodeCogsEqn_2.gif" attr="" comment="" date="1486480213" name="CodeCogsEqn_2.gif" path="CodeCogsEqn_2.gif" size="3043" user="zyva858" version="2"
 
META FILEATTACHMENT attachment="Transformation10stars.png" attr="" comment="Transformation applied to 10 stars" date="1486399474" name="Transformation10stars.png" path="Transformation10stars.png" size="1246399" user="zyva858" version="1"
META FILEATTACHMENT attachment="ImageOverlapDiagram1.png" attr="" comment="Non-aligned image diagram" date="1486414133" name="ImageOverlapDiagram1.png" path="ImageOverlapDiagram1.png" size="38273" user="zyva010" version="1"
META FILEATTACHMENT attachment="PixelOverlapDiagram.png" attr="" comment="Drizzle algorithm - pixel overlap diagram" date="1486414158" name="PixelOverlapDiagram.png" path="PixelOverlapDiagram.png" size="35534" user="zyva010" version="1"
META FILEATTACHMENT attachment="latexda3c368ae3d6196f704d9f55dbf91ad3.png" attr="h" comment="" date="1486416166" name="latexda3c368ae3d6196f704d9f55dbf91ad3.png" user="zyva010" version="1"
Added:
>
>
META FILEATTACHMENT attachment="Transformation5stars.png" attr="" comment="Transformation matrix applied to 5 stars in frame" date="1486480092" name="Transformation5stars.png" path="Transformation5stars.png" size="1201872" user="zyva858" version="1"
META FILEATTACHMENT attachment="CodeCogsEqn_3.gif" attr="" comment="Multiplied the horizontal transformation by factor n" date="1486480594" name="CodeCogsEqn_3.gif" path="CodeCogsEqn_3.gif" size="1884" user="zyva858" version="1"
META FILEATTACHMENT attachment="Matched5stars.png" attr="" comment="Stars matched up with accurate pixel coordinates" date="1486480762" name="Matched5stars.png" path="Matched5stars.png" size="418840" user="zyva858" version="1"

Revision 406 Feb 2017 - AnishaVadher

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- Public.AnishaVadher - 06 Feb 2017
Line: 6 to 6
 
  • Transforming from RA/DEC into pixel coordinates:
    CodeCogsEqn_2.gif
  • where M^-1 [pixels/degrees] is the inverse of the transformation matrix given in the header of the fits file of the image
  • Table of point plotted on diagram
Changed:
<
<
Star RA DEC X Y
1 35.48 57.24 1073 181
2 35.72 57.26 -358 127
3 35.60 57.11 337 951
4 35.75 57.12 -564 855
5 35.38 57.10 1645 1025
6 35.62 57.21 218 364
7 35.51 57.18 837 562
8 35.56 57.16 571 650
9 35.54 57.12 699 915
10 35.50 57.14 918 803
>
>
  • Star V RA/DEC V Pixel V Mag B RA/DEC B Pixel B Mag
    1 35.480983,
    57.242918
    912.55794514]
    [ 176.97902537
    2 35.722909,
    57.245152
    3 35.601206,
    57.109481
    4 35.754022,
    57.121345
    5 35.380351,
    57.103321
    6 35.6244,
    57.207992
    7 35.518988,
    57.177487
    8 35.563302,
    57.161355
    9 35.540478,
    57.117322
    10 35.503986,
    57.137308
 Stacking Non-aligned Images (Drizzle Algorithm)
Changed:
<
<
  • Images of the Dragonfly cluster from observation 2 are not aligned.
  • ImageOverlapDiagram1.png
>
>
  • Images of the Dragonfly cluster from observation 2 are not aligned.
  • ImageOverlapDiagram1.png
 
  • Pixels are not aligned, therefore cannot sum pixel values directly.
Changed:
<
<
  • Can use Drizzle algorithm to stack images.
  • PixelOverlapDiagram.png
>
>
  • Can use Drizzle algorithm to stack images.
  • PixelOverlapDiagram.png
 
  • When adding input image, new pixel value is determined by weighted fill of overlapping pixels. For each input pixel:
%BEGINLATEX% \begin{equation}

Revision 306 Feb 2017 - AaronAndrews

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- Public.AnishaVadher - 06 Feb 2017
Line: 19 to 19
 
9 35.54 57.12 699 915
10 35.50 57.14 918 803
Added:
>
>
Stacking Non-aligned Images (Drizzle Algorithm)

  • Images of the Dragonfly cluster from observation 2 are not aligned.
  • ImageOverlapDiagram1.png
  • Pixels are not aligned, therefore cannot sum pixel values directly.
  • Can use Drizzle algorithm to stack images.
  • PixelOverlapDiagram.png
  • When adding input image, new pixel value is determined by weighted fill of overlapping pixels. For each input pixel:
 \begin{equation}  \textup{ADU}_{\textup{fill}}=\textup{ADU}_{\textup{input}} \times \frac{\textup{Area}\left ( \textup{overlap} \right )}{\textup{Area}\left ( \textup{input pixel} \right )}  \end{equation}

*

 
META FILEATTACHMENT attachment="CodeCogsEqn_2.gif" attr="" comment="Transforming from RA/DEC into pixel coordinates" date="1486398104" name="CodeCogsEqn_2.gif" path="CodeCogsEqn_2.gif" size="1483" user="zyva858" version="1"
META FILEATTACHMENT attachment="Transformation10stars.png" attr="" comment="Transformation applied to 10 stars" date="1486399474" name="Transformation10stars.png" path="Transformation10stars.png" size="1246399" user="zyva858" version="1"
Added:
>
>
META FILEATTACHMENT attachment="ImageOverlapDiagram1.png" attr="" comment="Non-aligned image diagram" date="1486414133" name="ImageOverlapDiagram1.png" path="ImageOverlapDiagram1.png" size="38273" user="zyva010" version="1"
META FILEATTACHMENT attachment="PixelOverlapDiagram.png" attr="" comment="Drizzle algorithm - pixel overlap diagram" date="1486414158" name="PixelOverlapDiagram.png" path="PixelOverlapDiagram.png" size="35534" user="zyva010" version="1"
META FILEATTACHMENT attachment="latexda3c368ae3d6196f704d9f55dbf91ad3.png" attr="h" comment="" date="1486416166" name="latexda3c368ae3d6196f704d9f55dbf91ad3.png" user="zyva010" version="1"

Revision 206 Feb 2017 - AnishaVadher

Line: 1 to 1
 
META TOPICPARENT name="StewartBoogertPhotometry2016"
Changed:
<
<
-- AnishaVadher - 06 Feb 2017
>
>
-- Public.AnishaVadher - 06 Feb 2017
  Scaling Correction
Changed:
<
<
  • Transforming from RA/DEC into pixel coordinates:
    CodeCogsEqn_2.gif
>
>
  • Transforming from RA/DEC into pixel coordinates:
    CodeCogsEqn_2.gif
 
  • where M^-1 [pixels/degrees] is the inverse of the transformation matrix given in the header of the fits file of the image
  • Table of point plotted on diagram
Added:
>
>
 
Star RA DEC X Y
1 35.48 57.24 1073 181
2 35.72 57.26 -358 127

Revision 106 Feb 2017 - AnishaVadher

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="StewartBoogertPhotometry2016"
-- AnishaVadher - 06 Feb 2017

Scaling Correction

  • Transforming from RA/DEC into pixel coordinates:
    CodeCogsEqn_2.gif
  • where M^-1 [pixels/degrees] is the inverse of the transformation matrix given in the header of the fits file of the image
  • Table of point plotted on diagram
Star RA DEC X Y
1 35.48 57.24 1073 181
2 35.72 57.26 -358 127
3 35.60 57.11 337 951
4 35.75 57.12 -564 855
5 35.38 57.10 1645 1025
6 35.62 57.21 218 364
7 35.51 57.18 837 562
8 35.56 57.16 571 650
9 35.54 57.12 699 915
10 35.50 57.14 918 803

META FILEATTACHMENT attachment="CodeCogsEqn_2.gif" attr="" comment="Transforming from RA/DEC into pixel coordinates" date="1486398104" name="CodeCogsEqn_2.gif" path="CodeCogsEqn_2.gif" size="1483" user="zyva858" version="1"
META FILEATTACHMENT attachment="Transformation10stars.png" attr="" comment="Transformation applied to 10 stars" date="1486399474" name="Transformation10stars.png" path="Transformation10stars.png" size="1246399" user="zyva858" version="1"
 
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