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Present: Joe Bayley, Ashlea Kemp, Elena Cukanovaite, David Hadden, Professor Boogert, Professor Cowan Select one peak of data, fit gaussian to peak with term ...
Present: Joe Bayley, Ashlea Kemp, Elena Cukanovaite, David Hadden, Professor Cowan Find the errors in the plot of the spectra of cadmium. Use these errors ...
Present Joe Bayley, Ashlea Kemp, Elena Cukanovaite, David Hadden, Professor Cowan, Professor Boogert Find the convolution of two function to fit to the spectral ...
Detecting hot pixels We had two 1 hour exposure dark frames. One was at an angle and the other pointed upwards. We wanted to find the x and y coordinates ...
Meeting Notes Present: Ashlea Kemp, Joe Bayley, Elena Cukanovaite, David Hadden, Professor Boogert, Professor Cowan Make sure to include some mathematics onto ...
People present at start: David Hadden, Elena Cukanovaite, Professor Stewart Boogert. Ian Connelly joined later. Before taking data Time of turn on: 18.20. ...
Floodfill algorithm improvements To improve our algorithm we defined a star to be anything above 5 pixels in size. It seems that all hot pixels were removed ...
Mode Substraction We substracted the split mode image from the original image. If one performs mode split on the resulting image, one gets 0 for the mode ...
Histogram of the trial image The trial images is shown below. The histogram is done over the entire trial image and is divided into 50 bins. The bin with the most ...
Initial histogram The dark frames were analysed by plotting a histogram of all the photoelectron values. However, specifying too many bins will mean that some of the ...
Theory In a CCD the signal is measured in terms of the charge that is stored on to each pixel, however in converting this charge into a signal, the number of ADUs ...
Comparing stars between different filters In order to compare the quality of our data, we looked at the data with the largest signal to noise ratio, in this case ...
Mode vs. Median Background The problem with using the mode is that if a number does not appear more than once then the mode just takes the first number in the ...
ElenaCukanovaite 10 Feb 2016
Comparison of fits Before we fitted an unskewed Gaussian: f G(x,y,\mu x,\mu y,\sigma x,\sigma y,\rho, \beta 1, \beta 2) \frac{1}{2\pi\sigma ...
Testing the fitting First we wanted to test that the function we are fitting is actually normalised. The skewed Gaussian function is: f ...
MLE H R diagram B V: V R: Aperture photometry H R B V: V R: Error analysis Generated 1000 stars, fitted them to get the errors. Found ...
Before taking data Time of turn on: 18.20. Cooler set to 7 degrees. Temp at 6.9 degrees at 18.30. Center the telescope on Vega. Aling the ...
Present:Professor Boogert, David Hadden, Elena Cukanovaite. Turned on camera at 16:55 to begin cooling before observations at 15 degrees. The cooler was ...
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