ENR CTIO Blanco 4-m 2017-09-17

Date:

Sunday, September 17, 2017

Telescope:

CTIO Blanco 4-m

Submitter:

Margaret Gelman

Submitter Email:

mgelman2@illinois.edu

Observer Support:

Hernan Tirado

Night Assistant:

Claudio Aguilera

Also Present:

Rich Kron, Michael Johnson

Problems:

None.

Comments:

Observing Team

DES Observers: Rich Kron, Michael Johnson, Margaret Gelman
Telops: Claudio Aguilera – Operator, Hernan Tirado – Obs. Support
Remote Support:

Observing Plan

standard bias and dome flat sequence
evening standard stars
run ObsTac queue
end of night standard stars
end of night zeros

Conditions

weather: clear
weather during night: clear, humidity low and constant
Seeing conditions: Median: 0.98 arcsec, rms 0.14 arcsec
Wind conditions: 10-25 mph
Humidity: 20-24%

Accomplishments

WF mostly g, r, i, a few z; SN E1, E2, C3g,r

Afternoon: bias and dome flats
Evening: standards (J1442,E6,E8)
Survey exposures 678739-678789; 678802-678876; 678885-679007
SN exposures E1 678792-678795; E2 678796-678801; C3 678877-678884
End of night: standards (J0100,J0200,J0320)
End of night: zeros
Wildlife report: biting flies

Problems tagged as Synopsis_Problem
None.

Minor Problems and Relevant Information
Seeing was generally good all night, with exception of spike of poor seeing for 4 exposures around 08:20 UTC.

Notes for Data Management
None.

Conditions:

General Conditions

Temperature Max:

22.00

Temperature Min:

16.00

Humidity Max:

Humidity Min:

Wind Speed Max:

26.00

Wind Speed Min:

10.00

Comment:

None.

1st Quarter

Clouds:

Clear

Wind:

Low

Seeing Value:

0.96

Seeing Variability:

0.2

Seeing Source:

The Telescope I used

Sky :

2nd Quarter

Clouds:

Clear

Wind:

Low

Seeing Value:

0.96

Seeing Variability:

0.2

Seeing Source:

The Telescope I used

Sky:

3rd Quarter

Clouds:

Clear

Wind:

Low

Seeing Value:

1.00

Seeing Variability:

0.2

Seeing Source:

The Telescope I used

Sky:

4th Quarter

Clouds:

Clear

Wind:

Low

Seeing Value:

1.10

Seeing Variability:

0.2

Seeing Source:

The Telescope I used

Sky:

Delete
Edit

Program:

Proposal:

2012B-0001

Target of Oportunity:

Time Observed:

10.0

Time Engineering:

0.0

Time lost technical:

0.0

Time lost weather:

0.0

Time lost other:

0.0

Description:

Dark Energy Survey

Primary Investigator:

Joshua Frieman

Email:

frieman@fnal.gov [1]

Institution:

Fermilab

Instrument:

CTIO 4m DECam

Organization:

NOAO

Total Program Time:

Delete [2]
Edit [3]

Add [4]

Total Times	Time Observed	Time Engineering	Time lost technical	Time lost weather	Time lost other	Total Program Time
2017-09-17	10.0	0.0	0.0	0.0	0.0	10