Magellan Telescopes Observatory Report Personnel Accomplishments Observing Statistics Common Problems Work in Progress

Personnel Jorge Bravo has been hired as a new Instrument Specialist Victor Meriño Has been promoted to Instrument Specialist. He will begin working in the new position as soon as the new telescope Operator is trained Mauricio Martinez has been hired as a new Telescope Operator and will begin working on September 27 Jorge Araya has been hired as a new Telescope operator and is now in training Felipe Sanchez has been promoted to Programmer and will begin in his new position after training the new telescope operator

Accomplishments Three M1 cell Hard-Points in Clay were removed and serviced Work continues on the actuator air cylinder repairs Complete service of Enclosure Trucks and Drives Both Enclosures Designed, built and installed the LDSS-3 cable wrap and designed and install the Guider cable wrap Installed IRMA, U of A 225 GHz and Ohio State PWV sensors

The new LDSS-3 and guider wraps

Accomplishments (cont.) Iodine cell for MIKE installed on retractable arm (Dec) Software control was implemented in July S-H tests carried out at NASE and NASW ports to characterize collimation of M1, M2, and M3 (Dec, Jan, Mar) Adjustments of M3 tilt made in March and later have significantly decreased focal plane tilt Testing continues as weather and time permit

Accomplishments (cont.) Plan developed for long-term systems administration Internet access will be through CTIO (instead of the Chilean telephone company) The transition to CTIO system administration is underway El Pino and LCO network and fiber backbone upgrades are underway All new computer installations are being done by CTIO

Baade Telescope Instrumentation Usage: 21 Sep Apr Sep 2005 IMACS63% PANIC37% Observing Statistics

Clay Telescope Instrumentation Usage: 21 Sep Apr Apr Sep 2005 MIKE51%60% MIKE fibers7%3% LDSS-214%-- LDSS-313%23% MagIC + CCD7%9% B&C8%-- Other5% Observing Statistics

Baade + Clay Telescopes Instrumentation Usage: 21 Sep Apr Sep 2005 IMACS31%32% MIKE26%29% MIKE fibers3%1% PANIC18%19% LDSS-27%-- LDSS-37%12% B&C4%-- MagIC4% Other--3% Observing Statistics

May 2001 through Apr 2005 Long-Term Trends: Instrument Usage May 01- Oct 01 Nov 01- Apr 02 May 02- Oct 02 Nov 02- Apr 03 May 03- Oct 03 Nov 03- Apr 04 Apr 04- Sep 04 Sep 04- Apr 05 Apr 05- Sep 05 MagIC+CCD20%31%13%18%15%8% 4% B&C44%17%34%18%20%6%9%4%-- LDSS-228%40%31%19%10%6%2%7%-- LDSS-3-- 7%12% MIRAC8%3%13%4%-- Classic Cam--9% 8%-- MIKE-- 31%34%30% 26%29% MIKE fibers-- 3%1% PANIC-- 2%17%21%15%18%19% IMACS-- 4%29%36%31%32% Other--3%

12 Apr-14 Sep 2005: Observing Statistics BaadeClay % Open66.8%70.0% % Lost to Weather31.1%28.7% % Lost to Telescope1.1%0.6% % Lost to Instrument0.9%0.1% % Lost to Computer0.1%0.6% % Total Downtime2.1%1.3%

Instrument Downtime: 21 Sep Apr Apr Sep 2005 MIKE0.2% MIKE fibers4.6%*0.0% MagIC0.0%0.1% LDSS-20.5%-- LDSS-30.0% B&C0.0%-- IMACS0.5%1.4% PANIC1.1%0.2% Other--0.0% Observing Statistics

Long-Term Trends Baade May 01- Oct 01 Nov 01- Apr 02 May 02- Oct 02 Nov 02- Apr 03 May 03- Oct 03 Nov 03- Apr 04 Apr 04- Sep 04 Sep 04- Apr 05 Apr 05- Sep 05 % Open % % Lost to Weather % % Lost to Telescope % % Lost to Instrument % % Lost to Computer % % Total Downtime % Clay May 01- Oct 01 Nov 01- Apr 02 May 02- Oct 02 Nov 02- Apr 03 May 03- Oct 03 Nov 03- Apr 04 Apr 04- Sep 04 Sep 04- Apr 05 Apr 05- Sep 05 % Open % % Lost to Weather % % Lost to Telescope % % Lost to Instrument % % Lost to Computer % % Total Downtime %

Most Common Problems: Telescopes Primary mirror support (mirror panics, faulty actuators, hard point actuators) Campaign underway to seal air cylinders in actuators; redesign of actuator electronics cards in progress; ~50% of all time lost on both telescopes is due to these problems (but improvement is being seen) Leaking hard point breakaway seals cause primary mirror crashes Faulty connector on Hard Point #2 LVDT sensor

Hard Point #6 in Clay cell

Hard-point Breakaway Assembly Hard Point Breakaway Cylinder

Problems and Failures Enclosures Shutter structure on Clay is scheduled for the October and November Engineering runs Enclosure Truck Bearing failures Louver seals Wind Screen & Moon Roof drives Rotating interface seal

Bearing failure on Baade enclosure truck

Work in Progress Telescopes –Actuator leak repair –Hard-point breakaway leak repairs –New actuator control cards –New PWM amps on rotators (on hold) –M1 thermal control mixing valves

Work in Progress Enclosures –Louver seals –Enclosure Truck bearing failures –Rotating interface seals –Windscreen & Moon roof drives –Rotating seal (Baade)

Work In Progress Software –M3 Tip-Tilt automation –Code normalization, ini files –Translate Fortran to C++ (enclosure) –Windscreen & Moon roof automation –EDS query tools –PWM Amps, Rotator guiding, servos –M1 thermo control servo

Gemini Silver and Aluminum Coatings

LLNL Protected Silver