After the magnitudes of each image were measured and created into tables and graphs, the group then measured the average difference between the out of transit magnitude and the mid-transit magnitude.
The anticipated results for the change in magnitude showed an average of .02 to .03 raise in magnitude, thus showing the decrease in brightness from the regular brightness to the brightness when TrES-3b is in front of is. The graphs that were created should show a depression in magnitude.
The actual results that came from the images the team took resulted in a .027 increase in magnitude in average. The graphs that were made also showed the depression that the team was looking for.
The average change in magnitude was calculated by taking the average magnitude of the images before transit and while in mid-transit. This was done so any of the images that were in the process of transiting wouldn’t alter the data in a way that would make it appear as though the change in magnitude was any smaller or larger than it really was.