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ENR CTIO Blanco 4-m 2025-03-01

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Date: 
Saturday, March 1, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Lei Hu and Tomas Cabrera (first half), Gautham Narayan (second half)
Submitter Email: 
gsn@illinois.edu
Observer Support: 
Manuel Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
Rodrigo Hernandez, Rodrigo Hinojosa
Problems: 

One SISSPI crash -15 min - Remote connection/Chrome became very slow prior to crash - closed several tabs but this did not help much - e.g. typing in this window had a lag of a few seconds. Running top in a terminal showed chrome using > 50% memory, >25% CPU but with significantly higher spikes. Tried from laptop + desktop, and tested my own internet connection to rule all that out. May be worth trying a different browser? 

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.40
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2024B-893855
Target of Oportunity: 
No
Time Observed: 
9.5
Time Engineering: 
0.0
Time lost technical: 
0.25
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Attacking The Critical Systematics in the Next Generation of Low-Redshift SNIa Cosmology
Primary Investigator: 
Dillon Brout
Email: 
dbrout@bu.edu
Institution: 
Boston University
Instrument: 
CTIO 4m DECam
Total Program Time: 
9.75
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-03-01 9.5 0.0 0.25 0.0 0.0 9.75