1. LWS Science Team Meeting, 23 Mar 2004, Boulder1 Using HMI to Study Facular Contrast Functions Thomas Berger Berger@lmsal.com SDO Workshop 14 Feb 2006 HMI Magnetograms

2. LWS Science Team Meeting, 23 Mar 2004, Boulder2 TSI from Spots and Faculae

3. LWS Science Team Meeting, 23 Mar 2004, Boulder3 Prior Measurements MDI 676.8 nm continuum data Ortiz, Solanki, et al. A&A, 2002 Spatial resolution = 2” SVST 630.2 nm continuum data Topka, Tarbell, et al. ApJ, 1997 Spatial resolution = 0.5”  = 0.31 – 0.996

4. LWS Science Team Meeting, 23 Mar 2004, Boulder4 New Measurements SST G-band AR 10377 06-June-2003  = 0.6  = 53°

5. LWS Science Team Meeting, 23 Mar 2004, Boulder5 New Measurements SST 630.25nm AR 10377 06-June-2003  = 0.6  = 53°

6. LWS Science Team Meeting, 23 Mar 2004, Boulder6 Replication of prior results Topka et al., ApJ 1997

7. LWS Science Team Meeting, 23 Mar 2004, Boulder7 Using High Resolution

8. LWS Science Team Meeting, 23 Mar 2004, Boulder8 HMI and Irradiance HMI Irradiance measurements Full-disk VECTOR magnetogram Continuum contrast (positions 1, 5) Line center contrast (position 3) Regular cadence (e.g. 3X per day for life of mission) Irradiance analyses Continuum contrast vs. flux density vs.  Continuum contrast vs. field strength vs.  Line center contrast vs. same