ENR CTIO Blanco 4-m 2014-01-23

*Observing Team*

 

_DES Observers:_ David Gerdes, Claudio Bruderer, Tomek Kacprzak

_Telops:_ Claudio Aguilera

_Remote Support:_ Humberto Orrego

 

*Observing Plan*

 

# standard bias and dome flat sequence

# evening standard stars

# run ObsTac queue

# Standards carried out in banded cirrus

# handover to 2nd half

 

*Conditions*

 

# weather in afternoon: 4pm (local): scattered high clouds

# weather after dinner: 7pm (local): Heavy cirrus

# weather at 10 deg twilight: 21:30 (local): Cirrus in SW, low wind. Conditions non-photometric at start of evening. 

# weather summary: 2am (local):full cloud cover

# Seeing conditions: Median:1.2  RMS: 0.2

# Wind conditions: Low the whole half-night

 

*Accomplishments*

 

# Afternoon: zeros done 276851-276859 and 276935-276943, (ugrizY) dome flats done 276860-276934, checked all ok, u dropping as usual

# Winner of post sunset leisure activity: The crew from the 0.9m who enjoyed the sunset from our catwalk.

# Evening: Standards 276947-276961

# Survey Exposures 276964-277383

# Middle of night (end of half night): Standards 277384-277388

 

 

*Problems tagged as Synopsis_Problem*

 

None.

 

*Minor Problems and Relevant Information*

 

# Occlusion alarms: about half a dozen alarms during the night.

 

 

*Notes for Data Management*

Cloudy/non-photometric conditions at start of night, until around 277300.

More clouds near end of shift, around 277364.