You are here

CTIO Home

ENR CTIO Blanco 4-m 2016-09-13

Primary tabs

Date: 
Tuesday, September 13, 2016
Telescope: 
CTIO Blanco 4-m
Submitter: 
Mei-Yu Wang
Submitter Email: 
meiyu@physics.tamu.edu
Observer Support: 
Alberto Alvarez
Night Assistant: 
Hernan Tirado
Problems: 

# For the second night in a row we noticed that the performance of observer 1's console became very sluggish around 4:00 (local time). The poor performance (windows slow to respond to mouse clicks etc) is correlated with very high load averages (around 16 or 17) on the local machine. Running top did not reveal any obvious process that was using all the machine cycles. The problem may be related to a data transfer that is scheduled at this time. The problem clears up by about 5:00 (8:00 UT) and the load averages fall back to around 1

#The DIMM1 FWHM data were missing again about the same time as last night. Because the DIMM1 dropped out at roughly the same time the past two nights, we wonder if the problem could be not having suitable stars in the star-table

Comments: 

*Observing Plan*
# Full night DES observing
# 3 standards including: SDSSJ2140-0000, LDS749B_CCD_52, E8-A
# Obstac
# 3 morning standards including: SDSSJ0100-0000, WD0308_565_CCD_35, SDSSJ0320-0000

*Conditions*
# Clouds: light cloud cover up most of the sky early in the night; 
# Bright moon: 90%
# Seeing: (Q1) 1.1", (Q2) 1.4", (Q3) 2.0", (Q4) 1.4"
# At beginning: high clouds covered most of the sky. ~12 deg C. Winds ~10 mph. Humidity ~20%
# At midpoint: clear sky. ~10 deg C. Winds ~11 mph. Humidity ~20%
# At end: clear sky. 10 deg C. Winds 15 mph. Humidity 20%

*Accomplishments*
# Observerd envening standard stars even though sky are covered with thin clouds
# Observed widefield ExpID: 574520 - 574580 
# Observed SN-E1 ExpID:     574581 - 574586
# Observed SN-E2 ExpID:     574587 - 574592
# Observed widefield ExpID: 574593 - 574664
# Observed SN-X1 ExpID:     574665 - 574670
# Observed SN-X2 ExpID:     574671 - 574676
# Observed SN-S2 ExpID:     574677 - 574682
# Observed SN-S1 ExpID:     574683 - 574688
# Observed SN-C1 ExpID:     574689 - 574694
# Observed SN-C2 ExpID:     574695 - 574700
# Observed SN-X3 ExpID:     574701 - 574704
# Observed widefield ExpID: 574705 - 574709
# Observed SN-X3 ExpID:     574710 - 574731
# Observed SN-C3 ExpID:     574732 - 574739
# Observed widefield ExpID: 574740 - 574741 
# Observerd morning standard stars

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Cirrus
Wind: 
Medium
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
8
2nd Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
1.40
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
7
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
2.00
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
1
4th Quarter
Clouds: 
Clear
Seeing Value: 
1.40
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2012B-0001
Target of Oportunity: 
No
Time Observed: 
10.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DES Observing
Primary Investigator: 
Josh Frieman
Email: 
frieman@fnal.gov
Institution: 
Fermilab
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
10
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2016-09-13 10.0 0.0 0.0 0.0 0.0 10