1. Advanced Technology Center 1 HMI Yang Liu/ Line Choice Stanford University HMI Team Meeting – 2 May 2003 Comparison of the Lines FeI6173 & NiI6768 Yang Liu (Stanford) yliu@quake.stanford.edu 650 724 5605

2. Advanced Technology Center 2 HMI Yang Liu/ Line Choice Stanford University HMI Team Meeting – 2 May 2003 Basic Information for FeI6173 & NiI6768 Line profiles scanned by the Kitt Peak McMath telescope and 1 meter Fourier transform spectrometer.

3. Advanced Technology Center 3 HMI Yang Liu/ Line Choice Stanford University HMI Team Meeting – 2 May 2003 LCP & RCP Data from Mt. Wilson & ASP. Blend? blend

4. Advanced Technology Center 4 HMI Yang Liu/ Line Choice Stanford University HMI Team Meeting – 2 May 2003 Center-to-limb Variation

5. Advanced Technology Center 5 HMI Yang Liu/ Line Choice Stanford University HMI Team Meeting – 2 May 2003 Magnetic Field Measurement This observation was taken by ASP.

6. Advanced Technology Center 6 HMI Yang Liu/ Line Choice Stanford University HMI Team Meeting – 2 May 2003 Comparison of FeI6173 & NiI6768 The line FeI6173 has much better performance than the line NiI6768 in measurement of vector magnetic field. continuumumbraedepthwidthEW FeI6173 Blend at 0.6A. Influence for vel. Is small. 3 blends (?)3% deeper15% narrower6% smaller NiI6768 Clean.3 blends. One near line center.