ENR CTIO Blanco 4-m 2017-09-13

Date:

Wednesday, September 13, 2017

Telescope:

CTIO Blanco 4-m

Submitter:

Richard Kron

Submitter Email:

rich@oddjob.uchicago.edu

Observer Support:

Hernan Tirado

Night Assistant:

Alberto Alvarez

Also Present:

Steve Kent

Problems:

Please take a set of dome flat calibrations after the engineering work in the morning. We were not able to obtain flats in the evening of September 13.

Comments:

Observing Team

DES Observers: Rich Kron and Steve Kent
Telops: Alberto Alvarez – 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: fog at evening twilight, intermittent
weather during night: humidity started to decline after 21:00 local
weather during night: photometric thereafter
Seeing conditions: Median: 1.0 arcsec, rms 0.15 arcsec
Wind conditions: 5-15 mph
Humidity: 65% at start of observing

Accomplishments

Began with WF g, r, i then SN then back to WF r,i,z

Afternoon: no flats or zeros
Evening: no standards
Survey exposures 677213-677306; 677343-677409
SN exposures X2 677308-677310; X3g 677312-677314; X3r 677316-677318
SN exposures S2 677320-677324; S1 677326-677330; C3z 677332-677342
End of night: standards (J0100,J0200,J0320)
End of night: zeros
Wildlife report: none

Problems tagged as Synopsis_Problem
see entry 238848

Minor Problems and Relevant Information
An evening storm was forecast and the telescope was protected
under a tarp —> no afternoon flats, no evening standards.

If the DM asessment is t,t and the Accept? column is not checked,
apply_data_gui appears to change the status to t,f instead of doing
nothing. This appears to be a bug, either in the code or in the
documentation.

Notes for Data Management
No flats for tonight: weather prevented evening flats, and engineering
will prevent morning flats. Request is in to obtain a set of flats
in the middle of the day (Sept 14).

Conditions:

General Conditions

Temperature Max:

4.50

Temperature Min:

1.50

Humidity Max:

Humidity Min:

Wind Speed Max:

20.00

Wind Speed Min:

3.00

Comment:

None.

1st Quarter

Clouds:

Partially cloudy

Precipitation:

High Humidity

Wind:

Low

Seeing Value:

0.00

Seeing Variability:

Sky :

2nd Quarter

Clouds:

Clear

Wind:

Low

Seeing Value:

1.00

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:

1.00

Seeing Variability:

0.2

Seeing Source:

The Telescope I used

Sky:

Delete
Edit

Program:

Proposal:

2012B-0001

Target of Oportunity:

Time Observed:

8.25

Time Engineering:

0.0

Time lost technical:

0.0

Time lost weather:

1.75

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
2017-09-13	8.25	0.0	0.0	1.75	0.0	10