ENR CTIO Blanco 4-m 2013-02-02

Date:

Saturday, February 2, 2013

Telescope:

CTIO Blanco 4-m

Submitter:

Alberto Alvarez

Submitter Email:

anja [at] slac [dot] stanford [dot] edu

Observer Support:

HO,DR

Night Assistant:

Alberto Alvarez

Also Present:

DES crowd, AvdL, DA

Problems:

None.

------ 2nd half:

- Pointing offsets larger than previous nights (~7 arcmin).

- Mirror started getting warmer from about 3:00 UTC - did the chiller stop working?

- Observer2 computer really sluggish.

- Observer Console was behaving oddly at least for exposure 174804: the blue exposure bar didn't start, instead the number in the grey bar kept fluctuating and gradually decreasing. The exposure was actually being taken, as also indicated by a second instance of Observer Console opened on the Observer2 computer.

- Lost guide stars once; guide star display afterwards doesn't update to "live view"

Comments:

None.

------- 2nd half:

- Sky backgrounds in z-band higher than yesterday, despite less moonlight. Rasicam shows more water vapor than in previous nights, so presumably this is OH emission?

Conditions:

General Conditions

Temperature Max:

21.00

Temperature Min:

19.00

Humidity Max:

Humidity Min:

Wind Speed Max:

13.00

Wind Speed Min:

2.00

Comment:

None.

Quarters

1st Quarter

Clouds:

Clear

Wind:

Medium

Seeing Value:

1.80

Seeing Variability:

0.6

Seeing Source:

The Telescope I used

Sky :

2nd Quarter

Clouds:

Clear

Wind:

Medium

Seeing Value:

1.10

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:

Seeing Source:

The Telescope I used

Sky:

Program:

Proposal:

2012B-0003

Target of Oportunity:

Time Observed:

4.0

Time Engineering:

0.0

Time lost technical:

0.0

Time lost weather:

0.0

Time lost other:

0.0

Description:

des sv

Primary Investigator:

Frieman

Email:

frieman@fnal.gov [1]

Institution:

Fermilab

Instrument:

CTIO 4m DECam

Total Program Time:

Proposal:

2013A-0360

Target of Oportunity:

Time Observed:

4.5

Time Engineering:

0.0

Time lost technical:

0.0

Time lost weather:

0.0

Time lost other:

0.0

Primary Investigator:

von der Linden

Email:

anja@slac.stanford.edu [2]

Institution:

KIPAC

Instrument:

CTIO 4m DECam

Organization:

NOAO

Total Program Time:

4.5

Total Times	Time Observed	Time Engineering	Time lost technical	Time lost weather	Time lost other	Total Program Time
2013-02-02	8.5	0.0	0.0	0.0	0.0	8.5