Pointing

 

The coordinates of the center of the solar disk are regularly measured in the four wavelengths using a precise limb-fitting algorithm. The X and Y pointing coordinates in the four quadrants (crosses) are plotted as a function of time in the figures below. The red lines correspond to Fourier series representations with 12 components. These parametrisations are returned by the eit_point.pro function. These plots are updated every few months.

 

1
7
1		 EIT 171 Pointing
1
9
5		 EIT 195 Pointing
2
8
4		 EIT 284 Pointing
3
0
4		 EIT 304 Pointing

 

 

Web curator: Frédéric Auchère
Responsible NASA official: Joseph B. Gurman, Facility Scientist, Solar Data Analysis Center
joseph.b.gurman@gsfc.nasa.gov
+1 301 286-4767
NASA Goddard Space Flight Center
Solar Physics Branch / Code 682

Last revised: Thursday, February 12, 2004 6:11 PM - F. Auchère