September 21, 2007 - Cosmic Telescope

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Nathan:

Please create a table below which records all of the 60 degree data

Then calculate the variance of the data in that table.

Measure coincidence cosmic rates at an angle of 75 degrees over the weekend.

Then during next week lets do 45 degrees overnight and continue the 0 degrees during the day.

Cosmic rates measured each hour when the telecope accepts cosmics which intersect the earth's surface at 45 degrees.

Angular Distribution at 60 degrees
Angle Measure Dates Run Time elapsed (hour) Singles Count (on top) Coinc. Counts Coinc. per hour [math]\sqrt{N}[/math]
60 8/29-8/31 48.3 323170 1514 31.37 .8062
60 9/7-9/10 72 484028 2562 35.58 .7029
300 9/14-9/17 69 618643 4147 60.1 .9333
300 9/17-9/18 21 133792 1108 52.8 1.59
300 9/18-9/19 21 194602 1210 57.62 1.656
300 9/19-9/20 21.083 176564 1111 52.69 1.581
300 9/20-9/21 21.083 130154 1012 48 1.509



Cosmic rates measured each hour when the telecope accepts cosmics which intersect the earth's surface at 300 degrees to the perpendicular.

Time Start Time Stop Time elapsed (hour) Singles Count (on top) Coinc. Counts Coinc. per hour [math]\sqrt{N}[/math] [math]\sqrt{(x_i-\bar{x})^2}[/math]
4:13 pm of 9/20 1:18 pm of 9/21 21.083 130154 1012 57.62 1.656



Cosmic rates measured each hour when the telecope accepts cosmics which intersect the earth's surface perpendicularly (defined as zero degrees).

Time Start Time Stop Time elapsed (hour) Singles Count (on top) Coinc. Counts Coinc. per hour [math]\sqrt{N}[/math] [math]\sqrt{(x_i-\bar{x})^2}[/math]
1:22 pm 2:22 pm 1 5733 129 129 11.36 25.33
2:22 pm 3:52 pm 1.5 13951 182 121.33 11.01 17.66
1:26 pm 3:56 pm 2.5 13951 311 103.667 5.879