ENR CTIO Blanco 4-m 2014-01-19

Date:

Sunday, January 19, 2014

Telescope:

CTIO Blanco 4-m

Submitter:

Peter Nugent

Submitter Email:

penugent@lbl.gov

Observer Support:

Javier Rojas

Night Assistant:

Alberto Alvarez

Also Present:

Claudio Bruderer, Kathy Vivas (second half)

Problems:

None.

Comments:

*Observing Team*

_DES Observers:_ Claudio Bruderer, Peter Nugent

_Telops:_ Alberto Alvarez

_Remote Support:_ Javier Rojas

*Observing Plan*

# standard bias and dome flat sequence

# evening standard stars

# run ObsTac queue

# Standards carried out

# handover to 2nd half

*Conditions*

# weather in afternoon: 4pm (local): Clear save for edge of horizon

# weather after dinner: 7pm (local): Clear save for horizon

# weather summary: 2am (local):

# Seeing conditions: Median:0.94 RMS: 0.15

# Wind conditions: low, 8-9 mph peak, closed louvers at UT 02:30, after this the wind fell off

*Accomplishments*

# Afternoon: zeros done 275894-275904 and 275980-275988, (ugriz) dome flats done 275905-275979, checked all ok, but u was lower than expected

# Winner of post sunset leisure activity: Denver Broncos and Seattle Seahawks

# Evening: Standards 275992-275996, then 276000-276016

# Survey Exposures 276031-276098

# SN exposures 276019-27603003

# Middle of night (end of half night): Standards 276099-276103

*Problems tagged as Synopsis_Problem*

None.

*Minor Problems and Relevant Information*

# Occlusion alarms: 2 alarms during the night.

# Original pointing solution was good, but when we went to first standards (images 275894-275904) we had 0.5 arcmin offsets in RA and Dec. Repeated high-airmass standards but still had same offset issue (images 276000-276004).

# Offsets in Dec happened during a few exposures starting w/ 276032 and performed a reset at 276047

*Notes for Data Management*

# Offsets in Dec happened during a few exposures starting w/ 276032 and performed a reset at 276047 and final night standards 276099-276103

*************************
Second part of the night very smooth

Conditions:

General Conditions

Comment:

None.

1st Quarter

Clouds:

Clear

Seeing Value:

1.00

Seeing Variability:

Seeing Source:

The Telescope I used

Sky :

2nd Quarter

Clouds:

Clear

Wind:

Low

Seeing Value:

1.00

Seeing Variability:

Seeing Source:

The Telescope I used

Sky:

3rd Quarter

Clouds:

Clear

Wind:

Low

Seeing Value:

0.90

Seeing Variability:

Seeing Source:

The Telescope I used

Sky:

4th Quarter

Clouds:

Clear

Wind:

Low

Seeing Value:

0.90

Seeing Variability:

Seeing Source:

The Telescope I used

Sky:

Delete
Edit

Program:

Proposal:

2012B-0001 / 2013B-0440

Target of Oportunity:

Time Observed:

7.5

Time Engineering:

0.0

Time lost technical:

0.0

Time lost weather:

0.0

Time lost other:

0.0

Description:

DES (second half: SMASH)

Primary Investigator:

Josh Frieman / D. Nidever

Email:

frieman@fnal.gov [1]

Institution:

Fermilab

Instrument:

CTIO 4m DECam

Total Program Time:

7.5

Delete [2]
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Add [4]

Total Times	Time Observed	Time Engineering	Time lost technical	Time lost weather	Time lost other	Total Program Time
2014-01-19	7.5	0.0	0.0	0.0	0.0	7.5