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ENR CTIO Blanco 4-m 2021-04-09

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Date: 
Friday, April 9, 2021
Telescope: 
CTIO Blanco 4-m
Submitter: 
Ralf Kotulla
Submitter Email: 
kotulla@wisc.edu
Observer Support: 
Kathy Vivas
Night Assistant: 
Alberto Alvarez
Problems: 

Repeated short VPN dropouts starting around 5.30 UT, also cutting off zoom connection (might have been issue on observer side). After ~7.00 UT zoom-connection was stable, but VPN keep dropping out, sometimes after <1 minute, sometimes after >10 minutes, making image inspection via VNC difficult. Also, compared to previous nights VNC connection was very slow (typically around 300 kbit/s, other nights >10 MBit/s). A continuous ping from observer laptop to both google.com and the VPN server (139.229.10.238) showed no interruptions during the VPN connection failures.

 

Comments: 

None.

Conditions: 
General Conditions
Temperature Max: 
14.00
Temperature Min: 
10.00
Humidity Max: 
55
Humidity Min: 
40
Wind Speed Max: 
20.00
Wind Speed Min: 
5.00
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2021A-0117
Target of Oportunity: 
No
Time Observed: 
10.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Giant-dwarf galaxy interactions ...
Primary Investigator: 
Ralf Kotulla
Email: 
kotulla@wisc.edu
Institution: 
University of Wisconsin -- Madison
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
10.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2021-04-09 10.5 0.0 0.0 0.0 0.0 10.5