Night Report Sky Conditions

E.g., 11/12/2025
Title Conditions
ENR CTIO Blanco 4-m 2021-07-06
General Conditions
Temperature Max: 
12.00
Temperature Min: 
8.00
Humidity Max: 
40
Humidity Min: 
15
Wind Speed Max: 
32.00
Wind Speed Min: 
15.00
Comment: 
None.
1st Quarter
Clouds: 
Cirrus
Wind: 
Medium
Seeing Value: 
3.00
Seeing Variability: 
1.0
Seeing Source: 
The Telescope I used
Sky : 
2
2nd Quarter
Clouds: 
Cirrus
Wind: 
Medium
Seeing Value: 
1.30
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
1
3rd Quarter
Clouds: 
Cirrus
Wind: 
Medium
Seeing Value: 
2.00
Seeing Variability: 
0.6
Seeing Source: 
The Telescope I used
Sky: 
2
4th Quarter
Wind: 
Medium
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
ENR CTIO Blanco 4-m 2021-07-05
General Conditions
Temperature Max: 
15.00
Temperature Min: 
5.00
Humidity Max: 
40
Humidity Min: 
20
Wind Speed Max: 
40.00
Wind Speed Min: 
10.00
Comment: 
Seeing got worse after 08:00 UT
1st Quarter
Clouds: 
Clear
Wind: 
High
Seeing Value: 
0.90
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
High
Seeing Value: 
1.00
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
High
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Partially cloudy
Wind: 
High
Seeing Value: 
3.00
Seeing Variability: 
1.0
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
ENR CTIO 1.5-m 2021-07-05
General Conditions
Temperature Max: 
13.30
Temperature Min: 
6.60
Humidity Max: 
37
Humidity Min: 
22
Wind Speed Max: 
39.00
Wind Speed Min: 
10.00
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
High
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
High
Seeing Value: 
1.30
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
4th Quarter
Clouds: 
Thin Clouds
Wind: 
High
Seeing Value: 
2.10
Seeing Variability: 
0.8
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
ENR CTIO 1.5-m 2021-07-04
General Conditions
Temperature Max: 
14.10
Temperature Min: 
11.20
Humidity Max: 
22
Humidity Min: 
19
Wind Speed Max: 
25.00
Wind Speed Min: 
7.00
Comment: 
None.
1st Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
1
2nd Quarter
Clouds: 
Cirrus
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
3rd Quarter
Clouds: 
Cirrus
Wind: 
Medium
Seeing Value: 
1.20
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
2
4th Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.60
Seeing Variability: 
0.6
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
ENR CTIO Blanco 4-m 2021-07-04
General Conditions
Comment: 
Lots of thick cirrus. All observations about 20% efficient.
1st Quarter
Clouds: 
Overcast
Wind: 
Low
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
6
2nd Quarter
Clouds: 
Overcast
Wind: 
Low
Seeing Value: 
1.40
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
7
3rd Quarter
Clouds: 
Overcast
Seeing Value: 
1.40
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
6
4th Quarter
Clouds: 
Partially cloudy
Seeing Value: 
1.40
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
5
ENR CTIO 1.5-m 2021-07-03
General Conditions
Temperature Max: 
12.60
Temperature Min: 
11.10
Humidity Max: 
24
Humidity Min: 
20
Wind Speed Max: 
22.00
Wind Speed Min: 
8.00
Comment: 
None.
1st Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
3
2nd Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
2
3rd Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
4th Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
ENR CTIO Blanco 4-m 2021-07-03
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Overcast
Wind: 
Medium
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
7
2nd Quarter
Clouds: 
Overcast
Wind: 
Medium
Seeing Value: 
0.95
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
6
3rd Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
6
4th Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
6
ENR CTIO 1.5-m 2021-07-02
General Conditions
Temperature Max: 
14.10
Temperature Min: 
13.70
Humidity Max: 
17
Humidity Min: 
15
Wind Speed Max: 
24.00
Wind Speed Min: 
13.00
Comment: 
None.
1st Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
5
2nd Quarter
Clouds: 
Overcast
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
7
3rd Quarter
Clouds: 
Overcast
Wind: 
Medium
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
8
4th Quarter
Clouds: 
Cirrus
Wind: 
Medium
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
2
ENR CTIO Blanco 4-m 2021-07-02
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Partially cloudy
Wind: 
Medium
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky : 
6
2nd Quarter
Clouds: 
Partially cloudy
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
6
3rd Quarter
Clouds: 
Partially cloudy
Wind: 
Medium
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
6
4th Quarter
Clouds: 
Partially cloudy
Wind: 
Medium
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
5
ENR CTIO 1.5-m 2021-07-01
General Conditions
Temperature Max: 
11.30
Temperature Min: 
10.00
Humidity Max: 
19
Humidity Min: 
16
Wind Speed Max: 
21.40
Wind Speed Min: 
4.00
Comment: 
None.
1st Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
1
2nd Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
3rd Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
4th Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
1

Pages