1. Personnel Marc Leroy, asst. telescope engineer Instrument specialist search

2. Activities Primary mirror actuator control cards –Originals have a high failure rate –New circuit designed and built in Pasadena –Engineering team (Bagish & Jones) conferred with Dusty Clark, Tom Trebisky (MMT), and Ken Duffek (Steward) on MMT experience –New cards currently installed and testing at Baade

3. Actuator card in telescope

4. New actuator control card

5. Activities (continued) F/5 secondary mirror –Zerodur 1.7 m diameter –Blank shipped to Pasadena from SOML –Support fixtures glued onto the blank –Blank shipped to ITT (Kodak) for aspherizing –Finish date at SOML is April 2006

6. F/5 secondary

7. Axial and transverse supports

8. At Kodak for machining

9. At Kodak

10. Chip on the edge

12. Activities (continued) Bibliography –User submissions & John Grula’s (Carnegie librarian) searches –113 referred papers –67 abstracts & circulars –www.lco.cl/lco/magellan/science/paperswww.lco.cl/lco/magellan/science/papers –See the 2004 Magellan mailing list archives for instructions

13. Activities (continued) 1.Firpo, V., Bosch, G., & Morrell, N. 2005, MNRAS, 356, 1357 New giant HII regions in the southern skyNew giant HII regions in the southern sky 2.Barrientos, L. F., Gladders, M. D., Yee, H. K. C., Infante, L., Ellingson, E., Hall, P. B., & Hertling, G. 2004, ApJ, 617, L17 RCS 043938-2904.9: A New Rich Cluster of Galaxies at z=0.951RCS 043938-2904.9: A New Rich Cluster of Galaxies at z=0.951 3.Luhman, K. L. 2004, ApJ, 617, 1216 New Brown Dwarfs and an Updated Initial Mass Function in TaurusNew Brown Dwarfs and an Updated Initial Mass Function in Taurus 4.Woo, J., Urry, C. M., Lira, P., van der Marel, R. P., & Maza, J. 2004, ApJ, 617, 903 The Fundamental Plane Evolution of Active Galactic Nucleus Host GalaxiesThe Fundamental Plane Evolution of Active Galactic Nucleus Host Galaxies 5.Wang, Z., & Chakrabarty, D. 2004, ApJ, 616, L139 The Orbital Period of the Ultracompact Low-Mass X-Ray Binary 4U 1543-624The Orbital Period of the Ultracompact Low-Mass X-Ray Binary 4U 1543-624 6.Shahbaz, T., Casares, J., Watson, C. A., Charles, P. A., Hynes, R. I., Shih, S. C., & Steeghs, D. 2004, ApJ, 616, L123 The Massive Neutron Star or Low-Mass Black Hole in 2S 0921-630The Massive Neutron Star or Low-Mass Black Hole in 2S 0921-630 7.Luhman, K. L. 2004, ApJ, 616, 1033 A Survey for Low-Mass Stars and Brown Dwarfs in the eta Chamaeleontis and É› Chamaeleontis Young AssociationsA Survey for Low-Mass Stars and Brown Dwarfs in the eta Chamaeleontis and É› Chamaeleontis Young Associations 8.Jonker, P. G., Galloway, D. K., McClintock, J. E., Buxton, M., Garcia, M., & Murray, S. 2004, MNRAS, 354, 666 Optical and X-ray observations of the neutron star soft X-ray transient XTE J1709-267 Optical and X-ray observations of the neutron star soft X-ray transient XTE J1709-267 9.Sánchez Contreras, C., Gil de Paz, A., & Sahai, R. 2004, ApJ, 616, 519 The Companion to the Central Mira Star of the Protoplanetary Nebula OH 231.8+4.2The Companion to the Central Mira Star of the Protoplanetary Nebula OH 231.8+4.2 10.Orosz, J. A., McClintock, J. E., Remillard, R. A., & Corbel, S. 2004, ApJ, 616, 376 Orbital Parameters for the Black Hole Binary XTE J1650-500Orbital Parameters for the Black Hole Binary XTE J1650-500 11.Barrado y Navascués, D., & Jayawardhana, R. 2004, ApJ, 615, 840 A New Classical T Tauri Object at the Substellar Boundary in Chamaeleon IIA New Classical T Tauri Object at the Substellar Boundary in Chamaeleon II 12.Ellison, S. L., Churchill, C. W., Rix, S. A., & Pettini, M. 2004, ApJ, 615, 118 The Number Density of 0.6 < z < 1.7 Mg II Systems from CORALS: Observational Biases at Intermediate RedshiftThe Number Density of 0.6 < z < 1.7 Mg II Systems from CORALS: Observational Biases at Intermediate Redshift

14. Activities (continued) FourStar engineering visit to Magellan Wide Field Corrector fit-checks (SAO) Lasercutter software mods for LDSS (Clardy) Alignment software improvements (Kelson & Phillips) CorMASS user instrument (UVA)

15. CorMASS at Clay (John Wilson photo)

16. Activities (more reports later) B&C decommissioning MOE installation Baade aluminizing IMACS optical performance analysis Clay tertiary control LDSS upgrade Mirror air cylinder leak fixes MIKE iodine cell control

17. Near-term work F/5 operations preparations Flat field screen F/5 baffles IMACS imaging analysis LDSS3 commissioning Continue primary mirror support repairs

18. Magellan mailing lists http://mailman.ociw.edu Magellan@mailman.ociw.edu Magsac@mailman.ociw.edu Imacs, LDSS3, Magic for instrument engineering