Difference: StewartBoogertPhotometry20161202 (2 vs. 3)

Revision 302 Dec 2016 - AaronAndrews

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META TOPICPARENT	name="StewartBoogertPhotometry2016"

-- AaronAndrews - 01 Dec 2016

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Observation 2: 20161125
Took multiple luminous, red, visual, and blue frames of Double Cluster and Dragonfly Cluster.
Used guide scope to control star tracking. Therefore, could stack frames.

Changed:

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Example: Double cluster, blue, total exposure time (for 5 frames) 200s:

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Example: Double cluster, blue, total exposure time (for 5 frames) 200s - more stars visible:

Changed:

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Uplaoded all stacked frames to astrometry.net to fit (excluding blue for Dragonfly - guide system was not set up correctly when taking frames):

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Uplaoded all stacked frames to astrometry.net to fit:

- Double cluster blue: http://nova.astrometry.net/user_images/1396168#annotated
- Double cluster visual: http://nova.astrometry.net/user_images/1396165#annotated
- Double cluster red: http://nova.astrometry.net/user_images/1396166#annotated

Added:

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- Dragonfly cluster blue: http://nova.astrometry.net/user_images/1396774#annotated

- Dragonfly cluster visual: http://nova.astrometry.net/user_images/1396169#annotated
- Dragonfly cluster red: http://nova.astrometry.net/user_images/1396167#annotated
Coordinates at image centers:

Changed:

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Filter RA DEC

Double Cluster blue

visual 02^h 22^m 05.818^s +57° 11' 11.674"

red

Dragonfly Cluster visual

red

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	Filter	RA	DEC
Double Cluster	blue	02^h 22^m 06.252^s	+57° 11' 05.203"
	visual	02^h 22^m 05.818^s	+57° 11' 11.674"
	red	02^h 22^m 05.973^s	+57° 11' 10.444"
Dragonfly Cluster	blue	01^h 19^m 21.635^s	+58° 21' 26.031"
	visual	01^h 19^m 29.901^s	+58° 21' 01.003"
	red	01^h 19^m 26.550^s	+58° 21' 11.465"

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)
Then applied median analysis to frame first, then attempted fit (25 terms):
LEFT: Median filter for M103. RIGHT: taylor series fit (25 terms)
Attempted to fit up to 100 terms - failed.

META FILEATTACHMENT	attachment="Obs2_images_stacked.zip" attr="" comment="Observation2 - stacked images" date="1480585482" name="Obs2_images_stacked.zip" path="Obs2_images_stacked.zip" size="20631280" user="zyva010" version="1"
META FILEATTACHMENT	attachment="DoubleCluster_200s_blue_5stack.png" attr="" comment="Double Cluster (blue) stacked" date="1480585984" name="DoubleCluster_200s_blue_5stack.png" path="DoubleCluster_200s_blue_5stack.png" size="1100020" user="zyva010" version="1"

Added:

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META FILEATTACHMENT	attachment="Simulation_test11.py.txt" attr="" comment="Simulation code (11)" date="1480633547" name="Simulation_test11.py.txt" path="Simulation_test11.py" size="32740" user="zyva010" version="1"
META FILEATTACHMENT	attachment="latexa0be1fc22480ab7e803cf0b055b2df78.png" attr="h" comment="" date="1480635429" name="latexa0be1fc22480ab7e803cf0b055b2df78.png" user="zyva010" version="1"
META FILEATTACHMENT	attachment="M103_Simtest_BGmean_2.png" attr="" comment="Background mean using median" date="1480636752" name="M103_Simtest_BGmean_2.png" path="M103_Simtest_BGmean_2.png" size="102996" user="zyva010" version="1"
META FILEATTACHMENT	attachment="M103_Simtest_BGmean_3.png" attr="" comment="Background mean using raw image" date="1480636773" name="M103_Simtest_BGmean_3.png" path="M103_Simtest_BGmean_3.png" size="135347" user="zyva010" version="1"
META FILEATTACHMENT	attachment="M103_Simtest_starsBG_3.fits" attr="" comment="M103 simulation plus background directly from real image" date="1480637014" name="M103_Simtest_starsBG_3.fits" path="M103_Simtest_stars+BG_3.fits" size="12487680" user="zyva010" version="1"
META FILEATTACHMENT	attachment="M103_Median_65box.png" attr="" comment="M103 median" date="1480637017" name="M103_Median_65box.png" path="M103_Median_65box.png" size="95116" user="zyva010" version="1"
META FILEATTACHMENT	attachment="M103_VIS_60S.png" attr="" comment="M103 - real image" date="1480637219" name="M103_VIS_60S.png" path="M103_VIS_60S.png" size="1569987" user="zyva010" version="1"
META FILEATTACHMENT	attachment="M103_Simtest_BG_2.txt" attr="" comment="median background fit - parameters" date="1480637260" name="M103_Simtest_BG_2.txt" path="M103_Simtest_BG_2.txt" size="682" user="zyva010" version="1"
META FILEATTACHMENT	attachment="M103_Simtest_BG_3.txt" attr="" comment="direct background fit - parameters" date="1480637279" name="M103_Simtest_BG_3.txt" path="M103_Simtest_BG_3.txt" size="681" user="zyva010" version="1"

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