You are here

CTIO Home

ENR CTIO Blanco 4-m 2014-08-22

Primary tabs

Date: 
Friday, August 22, 2014
Telescope: 
CTIO Blanco 4-m
Submitter: 
Julie Nantais, Steve Kent, Rich Kron
Submitter Email: 
jnantais@astro-udec.cl
Observer Support: 
Hernan Tirado
Night Assistant: 
Claudio Aguilera
Also Present: 
Roger Leiton, David Murphy, Rodrigo Hernandez
Problems: 

Dome closed for humidity at 8:05 pm.  Reopened at 8:45 pm.

Comments: 

Real seeing was 4 arcsec in first quarter and 3 arcsec in second quarter.  Not allowed to report on form.

DES Observing Team

Observers: Stephen Kent, Richard Kron
Telops: Hernan Tirado, Claudio Aguilera, Rodrigo Hernandez
Remote Support:

Observing Plan

  1. 2nd half-night observing plan
  2. Handoff from 1st half observers at 00:45 local
  3. use 1st half standard bias and dome flat sequence
  4. two mid-point standard stars
  5. run ObsTac queue
  6. three morning standard stars
  7. morning bias

Conditions

  1. Cold, windy, bad seeing and getting worse.
  2. Clouds far to the south before 07:00 UT. Cloudy by 07:00 UT.
  3. Closed at 06:53 UT due to humidity.

 

Accomplishments

  1. afternoon bias and flats; flats look good
  2. Handoff at 04:40 UT
  3. midpoint standards

    • SDSSJ0100
    • SDSSJ2140
  4. Wide survey g exposures
  5. No morning standard stars because of clouds, humidity

Problems

Guider failed a few times because of very bad seeing

Notes for data management

  1. Afternoon flats and biases 351025-351133 are from prop-id 2014B-0608
  2. Exposure 351252 (last object exposure of the night) was aborted

Other

  1. DIMM is still down.
  2. primary was warmer than ambient all night. Example: at 01:40 local, pmas_temp = 8.1, lowdome_temp = 6.0, external = 3.0 C
Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Precipitation: 
High Humidity
Wind: 
Medium
Seeing Value: 
2.00
Seeing Variability: 
0.6
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
High
Seeing Value: 
2.00
Seeing Variability: 
0.6
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
3.00
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
2
4th Quarter
Clouds: 
Overcast
Precipitation: 
High Humidity
Wind: 
Medium
Seeing Source: 
The Telescope I used
Sky: 
8
Program: 
Proposal: 
2014B-0608
Target of Oportunity: 
No
Time Observed: 
4.25
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.75
Time lost other: 
0.0
Description: 
Hunting for faint optical features in galaxies across a large range of environments
Primary Investigator: 
Yara Jaffe
Email: 
yara.jaffe@astro-udec.cl
Institution: 
Universidad de Concepcion
Instrument: 
CTIO 4m DECam
Organization: 
Chile
Total Program Time: 
5
Proposal: 
2012B-0001
Target of Oportunity: 
No
Time Observed: 
2.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
3.25
Time lost other: 
0.0
Description: 
Dark Energy Survey
Primary Investigator: 
Joshua Frieman
Email: 
frieman@fnal.gov
Institution: 
Fermilab
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
5.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2014-08-22 6.25 0.0 0.0 4.0 0.0 10.25