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ENR CTIO Blanco 4-m 2016-02-11

Date: 
Thursday, February 11, 2016
Telescope: 
CTIO Blanco 4-m
Submitter: 
Alex Drlica-Wagner
Submitter Email: 
kadrlica@fnal.gov
Observer Support: 
Manuel Hernandez
Night Assistant: 
Alberto Alvarez
Also Present: 
Keith Bechtol
Problems: 

The DIMM seeing was not displayed by quick reduce between ~04:48 and 07:15 UTC.

It was noticed that the Rasicam display failed to refresh starting around 07:26 UTC.

Comments: 

DECamObserver (02/12/2016 05:44:03)

Observing Team

DES Observers: Alex Drlica-Wagner, Andres Plazas
Telops: Alberto Alvarez, Manuel Hernandez, Carlos 
Remote Support: Klaus is everywhere
Also Present: Keith Bechtol

Observing Plan

  1. Afternoon calibrations (normal set)
  2. Weather is predicted to be cloudy (but no DECals scans)
  3. Evening Standards
  4. Turn on ObsTac (shoot for the sucker holes)
  5. Mid-night standards
  6. Handover to community observers (04:57 UTC + 8 min)
  7. [Non-DES: Run Bizarro ObzTak (try not to break anything…)]

Conditions

  1. Sky half covered by clouds at the outset. Some clear area to the west. Clouds generally moving from west to east.
  2. Wind: (Q1) ~4 mph, (Q2) ~5 mph, (Q3) ~5 mph, (Q4) ~4.5 mph [Quarters of the full night]
  3. Waxing moon: 15% (setting early)
  4. Seeing: (Q1) 0.75”(z)/0.9”(i,r)/1”(g), (Q2) 1” (g,r,i), (Q3) 1” (g,r), (Q4) 1” (g,r)
  5. DIMM seeing: ~0.7”
  6. Low dome/primary mirror differential temperature are 2-3 deg C.
  7. Humidity: (Q1) 45%, (Q2) 36%, (Q3) 45%, (Q4) 50%

Accomplishments

  1. Dome flats good (still high on r, VR, and a little on u)
  2. 3 standard star fields: SDSSJ0843-0000, SDSSJ0200-0000, C26202/HST (cloudy)
  3. 119 wide survey exposures
  4. 2 standard star fields: SDSSJ0933-0005, SDSSJ1227-0000 (cloudy)

Narrative

  1. Applied assessements (all survey exposures good). Noted that 2016A-0366 exposures had also been included in assessments. Checked propid in the exposure table, appears to be correct.
  2. Could not get pointing solution on first attempt due to clouds.
  3. Increased exposure time to 10s. First offset RA=43.6,DEC=-4.1; second offset RA=1.4,DEC=-3.0
  4. Standard stars subject to large extinction due to clouds
  5. First obstac exposure at 00:48 (516328)
  6. At the start of observations clouds were in the NE while ObsTac chased the setting footprint in the SW.
  7. PSF is good (~0.75 z-band at airmass 1.38)
  8. QC may have failed for 516428
  9. SISPI gave interlock DECam (LATCH) error on exposure 516441. After a reset, everything behaved again and ObsTac continued. Exposure 516441 was not taken.
  10. Last obstac exposure at 04:50 (516447).
  11. Handover at 05:04 (reimbursed from the community)
Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
4
2nd Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
6
3rd Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
3
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
5
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Program: 
Proposal: 
2012B-0001
Target of Oportunity: 
No
Time Observed: 
4.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DES
Primary Investigator: 
Frieman
Email: 
frieman@fnal.gov [1]
Institution: 
Fermilab
Instrument: 
CTIO 4m DECam
Total Program Time: 
4.5
Proposal: 
2016A-0366
Target of Oportunity: 
No
Time Observed: 
4.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Magellanic Satellites Survey
Primary Investigator: 
Keith Bechtol
Email: 
keith.bechtol@icecube.wisc.edu [4]
Institution: 
University of Wisconsin -- Madison
Instrument: 
CTIO 4m DECam
Total Program Time: 
4.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2016-02-11 9.0 0.0 0.0 0.0 0.0 9
Source URL (modified on 02/12/2016 - 06:52): http://www.ctio.noao.edu/noao/content/enr-ctio-blanco-4-m-2016-02-11

Links
[1] mailto:frieman@fnal.gov
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/2943/delete?destination=print/content/enr-ctio-blanco-4-m-2016-02-11
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/2943/edit?destination=print/content/enr-ctio-blanco-4-m-2016-02-11
[4] mailto:keith.bechtol@icecube.wisc.edu
[5] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/2944/delete?destination=print/content/enr-ctio-blanco-4-m-2016-02-11
[6] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/2944/edit?destination=print/content/enr-ctio-blanco-4-m-2016-02-11
[7] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/9378?destination=print/content/enr-ctio-blanco-4-m-2016-02-11