Photometric Analysis with TAOS Zipper Mode Data Wang, Tanya T.-Y. Supervisor : King, Sun-Kun.

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Photometric Analysis with TAOS Zipper Mode Data Wang, Tanya T.-Y. Supervisor : King, Sun-Kun

TAOS Part 1 - Zipper-Mode image row block 2048*32pixel Our real image 2048*2048 Time interval : 0.3 sec Steady state 2048*7200 pixel

Part 2 - Dealing with the Data ( IDL ) Setup the file of each star which includes the information of it’s coordinates and magnitude in our interesting region of sky. Whole zipper-mode image row blocks. Use Source Extractor to determine the magnitudes of stars in all row blocks. Use sky-list to collate the coordinates of stars in each row block and put the same coordinates of stars into a file. TAOS

Find special data point in our star files Standard deviation. curve(ΔX, ΔY, magnitude) : x-axis is the time sequence which means the same star in different time and y-axis is the value of Δx (x-mx), Δy (y-my), magnitude. TAOS MAGNITUDEMAGNITUDE MAGNITUDEMAGNITUDE

TAOS Zipper-mode imageRow blocks Using Source Extractor Get a file including x, y and magnitudes of all stars in a row block. x y mag Star_1 Star_2 Star_3 Star_n row x y mag n File of star_5 Curve of x, y, mag

Part 3 - example _zipperc_a020.fit Starc20_52 TAOS ΔX ΔY M A G N I T U D E

010719_zipperc_a020.fit Starc20_60 TAOS ΔX ΔY M A G N I T U D E

010719_zipperc_a020.fit Starc20_155 TAOS ΔX ΔY M A G N I T U D E

010719_zipperc_a020.fit Starc20_186 TAOS ΔX ΔY M A G N I T U D E

010719_zipperc_a020.fit Starc20_231 TAOS ΔX ΔY M A G N I T U D E

010719_zipperc_a020.fit Starc20_239 TAOS ΔX ΔY M A G N I T U D E

010719_zipperc_a025.fit Starc25_30 TAOS ΔX ΔY M A G N I T U D E

010719_zipperc_a025.fit Starc25_190 TAOS ΔX ΔY M A G N I T U D E

010719_zipperc_a030.fit Starc30_36 TAOS ΔX ΔY M A G N I T U D E

Four zipper-mode images TAOS Total star Possible Data point _zipperc_a020192* _zipperc_a021178* _zipperc_a025190* _zipperc_a030192*951

Part 4 - Future Use another tool to determine the magnitude. Eliminate background from our image – black frame. Calibration Improve the ability of tracking. 2-D cross correlation An photometric analysis program in real-time. TAOS