Thüringer Landessternwarte Tautenburg

http://www.TLS-Tautenburg.de/

Online results

TLS provides raw-calibrated results as a quick-look service to assist observers at the telescopes:

Online results of the Tautenburg Lightmeter

Kalibrationen

Memo 28 Jan 2012

  Kalibrationswerte (vom 17./18. Juni 2010 )für L12 
       a,b,c,d,: 1.14131e+05,7.51959e-03,2.02872e-07,4.01675e-03  [Lux]
               
       X = c ( b (a exp (n(1+dT)/a) - 1) + n ) 
       n ... counts (sensor output)

       X ... physical quantity (total radiation in [W/m²] 
             or horizontal illumination [Lux])
       T ... sensor temperature

  Hintergrund x0 war -5.17096e-04

  Für W/m² lauten die Werte: a,b,c,d,: 1.14131e+05,7.51959e-03,1.74470e-09,4.01675e-03     [W/m²]

L12-Kalibration Natlight 17/18 Juni 2010

In [68]: X.fit_em1_to_natLight(Lux_range=[0.001, 120000], JD_select=SJD, type='em1c0T')
Fit: a,b,c,x0,d,: 1.14131e+05,7.51959e-03,2.02872e-07,-5.17096e-04,4.01675e-03,res2/(N-n-1) = 0.0155 ,N = 60101, n= 5

In [244]: SJD1=(X.JD > mx.DateTime.DateTime(2010,6,17,5,18).jdn) & (X.JD < mx.DateTime.DateTime(2010,6,17,9,10).jdn) 
In [245]: SJD2=(X.JD > mx.DateTime.DateTime(2010,6,17,9,20).jdn) & (X.JD < mx.DateTime.DateTime (2010,6,17,12,32).jdn)
In [246]: SJD3=(X.JD > mx.DateTime.DateTime(2010,6,17,18,53).jdn) & (X.JD < mx.DateTime.DateTime(2010,6,18,6,26).jdn)
In [247]: SSH=(X.Sunheight_deg_from_JD(X.JD)>20)|((X.Sunheight_deg_from_JD(X.JD)<0)&(X.Sunheight_deg_from_JD(X.JD)>-14))
In [248]: SJD=(SJD1|SJD2|SJD3)&SSH

vergl 2008

In [31]: SJD1=(X.JD > mx.DateTime.DateTime(2008,10,25,14,00).jdn) & (X.JD < mx.DateTime.DateTime (2008,10,26,11,55).jdn)
In [32]: SSH=(X.Sunheight_deg_from_JD(X.JD)>5)|((X.Sunheight_deg_from_JD(X.JD)<0)&(X.Sunheight_deg_from_JD (X.JD)>-18))
In [33]: SJD=(SJD1)&SSH
In [34]: X.plot_em1T(1.03732274e+05,   1.30989739e-03,   3.70545698e-07,  3.07469124e-03,marker=',',color='r',JD_select=SJD) #L12 cal April 2010 

In [35]: X.fit_em1_to_natLight(Lux_range=[0.0001, 200000], type='em1c0 T',JD_select=SJD)Fit: a,b,c,x0,d,: 1.06073e+05,1.64358e-03,2.59081e-07,-1.09020e-03,3.37762e-03,res2/(N-n -1) = 0.036 ,N = 632, n= 5

 In [36]: SJD1=(X.JD > mx.DateTime.DateTime(2008,10,23,12,00).jdn) & (X.JD < mx.DateTime.DateTime (2008,10,24,0,0).jdn) 
In [37]: SSH=(X.Sunhe ight_deg_from_JD(X.JD)>5)|((X.Sunheight_deg_from_JD(X.JD)<0)&(X.Sunheight_deg_from_JD(X.JD)>-18) )
In [38]: SJ D=(SJD1)&SSH
In [39]: X. fit_em1_to_natLight(Lux_range=[0.0001, 200000], type='em1c0T',JD_select=SJD)
Fit: a,b,c,x0,d,: 9.71028e+04,4.64718e-04,2.25403e-07,-1.02250e-03,2.21084e-03,res2/(N-n-1) = 0.0476 ,N = 320,  n= 5

In [42]: SJD1=(X.JD > mx.DateTime.DateTime(2008,9,27,14,38).jdn) & (X.JD < mx.DateTime.DateTime(2008,9,28,14,0).jdn)
In [45]: SSH=(X.Sunheight_deg_from_JD(X.JD)>5)|((X.Sunheight_deg_from_JD(X.JD)<0)&(X.Sunheight_deg_from_JD(X.JD)>-18))
In [46]: SJD=(SJD1)&SSH
In [47]: X.plot_em1T(1.06073e+05,1.64358e-03,2.59081e-07,3.37762e-03,marker=',',color='r',JD_select=SJD) #
In [48]: X.fit_em1_to_natLight(Lux_range=[0.0001, 200000], type='em1c0T',JD_select=SJD)
Fit: a,b,c,x0,d,: 1.08227e+05,1.97023e-03,2.35073e-07,-5.73220e-04,3.38910e-03,res2/(N-n-1) = 0.0583 ,N = 830, n= 5

30 Aug 2010 vergl. Voltcraft

   L12 25 Sept 2008 - Voltcraft
             lin: 2.65e-7 CNTS
             exp: 2.65e-7 CNTS + 2.5E-5 exp ( cnts / 1.E5)
       10 Apr 2010
              a,b,c,d  1.E5, 0.0013, 3.7E-7, 0.0031 
             x0=-1.105E-3 lx

Notiz 2 Feb 2011

L12.plot_em1T(1.14057e+05,7.36610e-03,2.05449e-07,4.00923e-03,marker=',', color='k')