1. RR Lyrae Observations M B,V,I,K = m B,V,I,K - 5 log d + 5 To calibrate M B,V,I,K we need: To calibrate M B,V,I,K we need: BVIK light curves for field RRL BVIK light curves for field RRL BVIK light curves for cluster RRL BVIK light curves for cluster RRL

2. BVIK light curves of field RRL 60 field RRL in A-List 60 field RRL in A-List BVI: BVI: Most have PE/CCD B,V light curves. Most have PE/CCD B,V light curves. Have been obtaining I with BGSU 0.5m+CCD Have been obtaining I with BGSU 0.5m+CCD Plan to complete all stars w/  > -20° by Sep 2004. Plan to complete all stars w/  > -20° by Sep 2004. K: K: 16 stars need K, most in South. 16 stars need K, most in South. Propose queue-scheduled 2MASS at CTIO? Propose queue-scheduled 2MASS at CTIO?

3. BGSU 0.5m+CCD RRL

4. Locations of Field RRL

5. BVIK LCs of cluster RRL BVI: BVI: Six of the 13 RRL-bearing globulars have BVI. Six of the 13 RRL-bearing globulars have BVI. Four need BVI: M13, M30, NGC362, NGC6723. Four need BVI: M13, M30, NGC362, NGC6723.  Cen needs BI.  Cen needs BI. M55 and 47 Tuc need I. M55 and 47 Tuc need I. Obtained with CTIO 0.9m and LCO 40”. Obtained with CTIO 0.9m and LCO 40”. Propose continuation with 2MASS at CTIO? Propose continuation with 2MASS at CTIO? K: K: Will need to do most of the clusters, ~15 visits each. Will need to do most of the clusters, ~15 visits each. Begin in 2004/5? SOAR, LCO 100”, MDM 2.4m? Begin in 2004/5? SOAR, LCO 100”, MDM 2.4m?

6. BVI data on RRL in globulars  Cen: 66 visits in BI … done!  Cen: 66 visits in BI … done! NGC 362: 25 visits in BVI … done? NGC 362: 25 visits in BVI … done? 47 Tuc: 20 visits in I … done? 47 Tuc: 20 visits in I … done? NGC 6732: 7 visits in BVI … needs more. NGC 6732: 7 visits in BVI … needs more. Will analyze images in Summer 2004. Will analyze images in Summer 2004.