Log Book Entry No.136

Created: 07 Feb 2017 18:59:04

Last Revised: 07 Feb 2017 18:59:04

AlanisCozens1

PH2900 observation 2 SH LL MF AC

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07/02/2017 17:40 start time

M Fernandes, L Lenz, S Hughes, A Cozens, S Boogert

Weather - cloudy fairly poor visibility

• set up telescope, open dome, take off caps etc
• take picture of blank space, set up guide camera also
• twilight point scope at blank space look at cooling and non cooling effects
• target is betelgeuse, use to focus and synchronise camera
• move scope to pleiades, new target in order to take pictures of cluster, image with multiple stars
• centre on atlas and pleione
• look at error in plate scale as a function of flux ALL FRAMES!!!!!!!!!!!!!!!

• f[0].header this shows all the info about the image and the telescope
• shape(d)

  Out[40]: (1020, 1530)

  dx1 = d[0:500,:].sum(0)

  dx2 = d[501:,:].sum(0)

  plot(dx1)

  this will set a range on the x/y axis
• def guassbg(x,a,m,s,c0,c1,c2) :

  return a*np.exp(-(x-m)**2/s**2)+c0*x**2+c1*x+c2 this creates a gaussian function
• [p,c] = scipy.optimize.curve_fit(guassbg,x,dx2) this curve fits and shows the parameters and the covariance