You are here

CTIO Home

ENR CTIO Blanco 4-m 2017-02-01

Primary tabs

Date: 
Wednesday, February 1, 2017
Telescope: 
CTIO Blanco 4-m
Submitter: 
Ting Li
Submitter Email: 
tingli@fnal.gov
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
Alex Drlica-Wagner, Tim Abbott, Tyler Pritchard
Problems: 

At 11:46 pm, while transferring exposure 615509, we got a SISPI Warning (alarm ID: 2700). Only part of image was shown on the comfort display. Comfort display stopped working after this. exposure 615509-615512 look fine from observer2. At 11:54 pm, we get SISPI Alerts for exposure 615513, 615514: missing CCD extension (alarm ID:2809). Then SISPI stopped taking exposures, so restarted SISPI at 12:00 am. Back to obstac exposure at 12:11 am. Lost 17 min of survey time. Com
fort display is also back to normal.

On the first exposure after switching observers, the 4MAP failed and the telescope had to be moved manually to the zenith.  Alberto suspects the worn patch in the Teflon coating of the ride surface of the RA cable wrap.  Michael could look at the telemetry for support for this suspicion.  30min lost.

One exposure in the second half of the night threw up the error: "Missing CCD extensions for 615592. Expected 70, Received 1." and the resulting image was corrupted.  No action was taken, the issue did not recur.

 

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Precipitation: 
High Humidity
Wind: 
Low
Seeing Value: 
0.80
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Precipitation: 
High Humidity
Wind: 
Low
Seeing Value: 
0.80
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2012B-0001
Target of Oportunity: 
No
Time Observed: 
0.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
The Dark Energy Survey
Primary Investigator: 
Josh Frieman
Email: 
frieman@fnal.gov
Institution: 
Fermilab
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
0
Proposal: 
2017A-0909
Target of Oportunity: 
No
Time Observed: 
3.5
Time Engineering: 
0.0
Time lost technical: 
0.5
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Deeper, WIder, Faster, run #3
Primary Investigator: 
Jeff Cooke
Email: 
cooke@swin.edu.au
Institution: 
Swinburne University of Technology
Instrument: 
CTIO 4m DECam
Organization: 
N/A
Total Program Time: 
4
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2017-02-01 3.5 0.0 0.5 0.0 0.0 4