magellan telescopes observatory report
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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
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 2004-
12 Apr 2005
12 Apr 2005
14 Sep 2005
IMACS 63% 63%
PANIC 37% 37%
Observing Statistics
Clay Telescope Instrumentation Usage:
21 Sep 2004-
12 Apr 2005
12 Apr 2005-
14 Sep 2005
MIKE 51% 60%
MIKE fibers 7% 3%
LDSS-2 14% --
LDSS-3 13% 23%
MagIC + CCD 7% 9%
B&C 8% --
Other 5%
Observing Statistics
Baade + Clay Telescopes Instrumentation Usage:21 Sep 2004-
12 Apr 2005
12 Apr 2005
14 Sep 2005
IMACS 31% 32%
MIKE 26% 29%
MIKE fibers 3% 1%
PANIC 18% 19%
LDSS-2 7% --
LDSS-3 7% 12%
B&C 4% --
MagIC 4% 4%
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+CCD 20% 31% 13% 18% 15% 8% 8% 4% 4%
B&C 44% 17% 34% 18% 20% 6% 9% 4% --
LDSS-2 28% 40% 31% 19% 10% 6% 2% 7% --
LDSS-3 -- -- -- -- -- -- -- 7% 12%
MIRAC 8% 3% 13% 4% -- -- -- -- --
Classic Cam -- 9% 9% 8% -- -- -- -- --
MIKE -- -- -- 31% 34% 30% 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
Baade Clay
% Open 66.8% 70.0%
% Lost to Weather 31.1% 28.7%
% Lost to Telescope 1.1% 0.6%
% Lost to Instrument 0.9% 0.1%
% Lost to Computer 0.1% 0.6%
% Total Downtime 2.1% 1.3%
Instrument Downtime:
21 Sep 2004-
12 Apr 2005
12 Apr 2005-
14 Sep 2005
MIKE 0.2% 0.2%
MIKE fibers 4.6%* 0.0%
MagIC 0.0% 0.1%
LDSS-2 0.5% --
LDSS-3 0.0% 0.0%
B&C 0.0% --
IMACS 0.5% 1.4%
PANIC 1.1% 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 74.8 85.6 67.1 94.4 71.4 92.7 69.9 88.4 66.8%
% Lost to Weather 20.6 9.7 31.1 3.1 23.7 4.3 27.4 9.6 31.1%
% Lost to Telescope 1.3 3.6 1.1 1.4 2.7 1.4 1.8 0.9 1.1%
% Lost to Instrument 2.5 1.0 0.7 0.6 2.1 1.5 1.0 0.7 0.9%
% Lost to Computer 0.4 0.2 0.1 0.5 0.1 0.2 0.0 0.4 0.1%
% Total Downtime 4.2 4.8 1.9 2.5 4.9 3.1 2.8 2.0 2.1%
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 -- -- 76.6 89.2 81.3 93.1 69.8 88.6 70.0%
% Lost to Weather -- -- 13.6 4.3 16.1 4.3 26.9 9.4 28.7%
% Lost to Telescope -- -- 7.5 4.4 2.1 1.6 2.8 1.3 0.6%
% Lost to Instrument -- -- 1.5 1.9 0.4 0.8 0.1 0.5 0.1%
% Lost to Computer -- -- 0.9 0.2 0.1 0.1 0.4 0.3 0.6%
% Total Downtime -- -- 9.9 6.5 2.6 2.5 3.3 2.1 1.3%
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
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
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
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