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ENR CTIO 1.5-m 2019-09-28

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Date: 
Saturday, September 28, 2019
Telescope: 
CTIO 1.5-m
Submitter: 
Roberto Aviles
Submitter Email: 
raviles@ctio.noao.edu
Observer Support: 
None
Night Assistant: 
None
Problems: 

At first ThAr_slicer lamp, noted a decrement of counts (compared to yesterday.) Reported it to Leonardo who found the slicer motor not working correctly.

Humberto Orrego kindly came and did an APH which recovered the slicer functionality. Lost 50 minutes at all. Likely the 2 objects already taken, are negatively impacted by this problem.

However, I still see the ThAr lamps dimmer than yesterday. I took the first lamps of yesterday and today and compared (imstat and imarith with "/"), both suggest today lamp is dimmer!. Might be an issue with the lamp power supply?? Check testThAr_1718 and testThAr_1817 under /home/data. On other hand, every time the calibration is requested, the system error message reads:

"positioning slicer motor to slicer position ...
resetting ...
homing ...
CHIRON ERROR (SLICER:HOME)
resetting ...
homing ...

CHIRON ERROR (SLICER:HOME)
[1] 8031
CHIRON ERROR command MOVE rejected on state ERROR..." (et cetera... in /mir7/logs/IOS...)

Is that a real homing position? Is the system failing to reach/detect a home detector, e.g. a limit switch or something similar? 

Comments: 

DIMM2 is not working. Using Pachon seeing monitor as a reference

Skipped objects HIP019948, TIC179582003 and HD 37043.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
Pachon Seeing Monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
Pachon Seeing Monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
Pachon Seeing Monitor
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
Program: 
Proposal: 
K Kids
Target of Oportunity: 
No
Time Observed: 
10.5
Time Engineering: 
0.0
Time lost technical: 
0.75
Time lost weather: 
0.0
Time lost other: 
0.0
Primary Investigator: 
Todd Henry
Email: 
thenry@astro.gsu.edu
Institution: 
SMARTS
Instrument: 
CTIO 1.5m Echelle
Organization: 
SMARTS
Total Program Time: 
11.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2019-09-28 10.5 0.0 0.75 0.0 0.0 11.25