6/16 (again):
prettiest plot EVER.


6/19:
Plotted up a quadratic fit of the M13 data and made a plot of both the new quadratic fit (in green) and the linear fit (in red) over all the data. The quadratic fit is definitely an improvement over the linear fit, but not by an incredible amount. Next turned my attention to getting the transforms from ugriz prime to ugriz. First looked at one frame from Jen (the 5th frame to be precise) and compared it to Clem, then plotted the resulting graph. The first Jen frame only had ~10 points on it, so I moved on to the 2nd frame, and plotted the same thing as for the first.


6/20
Now I look at the overlap sections between the Jen frames. I combined the 2nd and 3rd Jen frames and plotted g'-r' Vs. g-g' for the photometry done on both frames. The resulting plot shows that there is some sort of offset or something going on between the frames, but it is hard to see exactly what is happening due to the relatively large g-g' errors and the small sample size (the blue fit corresponds to the black points and the orange fit to the red points). Next I combined the 6th and 7th frames and made the same kind of plot as before. This plot seems to show more of a static offset and less color dependence than for the 2nd and 3rd frames, indicating that each frame will need its own calibration. I next took the sixth frame by itself and plotted g-r Vs. g'-g in the same manner i used for the plots I made yesterday. I figured id give the transforms another go, this time only with stars that Kyle marked as being in the cluster (probability > 75).


6/21: I plotted Jen frame 5 again, this time zoomed in on the middle region. This plot also differentiates between stars with ra >250.3 and dec <36.57 (in pink) and the rest of the frame (in black). The plot uses an error cut of .02 and a sep cut of 6. Points from the first and last 100 x-axis pixels have been removed but are not plotted in red and blue, unlike in the previous plots where they are present. Next plotted frame 5 again, but this time with Kyle's cluster probabilities in there. High membership probability stars are in sea green. Also, a zoomed-in version. Next I plotted the transforms for g-r Vs. g'-g from frame 5, because that's shaping up to be the best frame to use, it seems.


6/22:
Plotted g'-r' Vs g'-g, with a lot of stuff going on in the plot.


6/23:
more frames with the same scheme as the plot from yesterday. Now that I'm done with those, I went back to the UVBRI-u'g'r'i'z' transforms. Here's V-I Vs. g'-I.

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