Personnel Marc Leroy, asst. telescope engineer Instrument specialist search

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

Actuator card in telescope

New actuator control card

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

F/5 secondary

Axial and transverse supports

At Kodak for machining

At Kodak

Chip on the edge

Activities (continued) Bibliography –User submissions & John Grula’s (Carnegie librarian) searches –113 referred papers –67 abstracts & circulars – –See the 2004 Magellan mailing list archives for instructions

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 : A New Rich Cluster of Galaxies at z=0.951RCS : A New Rich Cluster of Galaxies at z= 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 The Orbital Period of the Ultracompact Low-Mass X-Ray Binary 4U 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 The Massive Neutron Star or Low-Mass Black Hole in 2S 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 J Optical and X-ray observations of the neutron star soft X-ray transient XTE J 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 The Companion to the Central Mira Star of the Protoplanetary Nebula OH Orosz, J. A., McClintock, J. E., Remillard, R. A., & Corbel, S. 2004, ApJ, 616, 376 Orbital Parameters for the Black Hole Binary XTE J Orbital Parameters for the Black Hole Binary XTE J 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

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)

CorMASS at Clay (John Wilson photo)

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

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

Magellan mailing lists Imacs, LDSS3, Magic for instrument engineering