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Astronomical seeing San Pedro de Atacama

Limited 3 Days Seeing Prediction

You can subscribe to an ad-free extended seven day seeing prediction with point+:

Datetime Clouds Seeing Bad Layers
Sun & Moon phases Hour CLT Low Mid High Index 1 Index 2 arc sec. Visible Planets Jet stream (m/s) Bot (km) Top (km) K/ 100m Temp (°C) 2m rel. hum. (%)
Mon
2014.07.28
07:11
18:07
07:58
19:46
waxing crescent (18°)
08 0 0 5 5 5 0.37
-MV-J-UN-
22 m/s 02.6 03.2 0.5 K 9°C 7%
09 0 0 5 5 5 0.37
LMV-J-U--
22 m/s 02.6 03.2 0.5 K 9°C 7%
10 0 0 0 5 4 0.36
LMV-J-U--
21 m/s 02.6 03.8 0.7 K 10°C 13%
11 0 0 0 5 4 0.36
LMV-J----
19 m/s 02.6 03.8 0.6 K 12°C 13%
12 0 0 0 5 5 0.38
LMVMJ----
17 m/s 02.6 03.8 0.6 K 14°C 14%
13 0 0 0 5 5 0.39
LMVMJS---
17 m/s 03.2 03.8 0.5 K 15°C 14%
14 0 0 0 5 5 0.41
LMVMJS---
16 m/s 05.8 06.6 0.5 K 17°C 13%
15 0 0 0 5 5 0.42
LMVMJS---
16 m/s 05.8 06.6 0.5 K 18°C 14%
16 0 0 0 5 5 0.43
LMVMJS---
15 m/s 00.0 00.0 0.0 K 18°C 15%
17 0 0 0 5 5 0.45
L--MJS--P
14 m/s 00.0 00.0 0.0 K 18°C 15%
18 0 0 0 5 5 0.45
L--M-S--P
14 m/s 00.0 00.0 0.0 K 17°C 16%
19 0 0 0 5 5 0.44
L--M-S--P
14 m/s 05.1 05.8 0.5 K 16°C 17%
20 0 0 0 5 5 0.43
---M-S--P
14 m/s 05.1 05.8 0.5 K 13°C 18%
21 0 0 0 5 5 0.44
---M-S-NP
14 m/s 00.0 00.0 0.0 K 11°C 20%
22 0 0 0 5 4 0.46
---M-S-NP
15 m/s 05.1 05.8 0.5 K 8°C 25%
23 0 0 0 5 4 0.47
---M-S-NP
15 m/s 05.1 05.8 0.6 K 8°C 30%
Tue
2014.07.29
07:11
18:07
08:34
20:35
waxing crescent (30°)
00 0 0 0 5 3 0.47
---M-SUNP
14 m/s 05.1 05.8 0.6 K 8°C 31%
01 0 0 0 5 3 0.47
-----SUNP
15 m/s 05.1 05.8 0.6 K 7°C 30%
02 0 0 0 4 3 0.46
------UNP
15 m/s 05.1 05.8 0.7 K 6°C 30%
03 0 0 0 4 3 0.47
------UNP
16 m/s 05.1 05.8 0.7 K 7°C 31%
04 0 0 0 4 3 0.49
------UNP
17 m/s 05.1 05.8 0.7 K 7°C 34%
05 0 0 0 4 3 0.49
------UNP
18 m/s 05.1 05.8 0.7 K 7°C 36%
06 0 0 0 4 3 0.47
--V---UN-
19 m/s 05.1 05.8 0.7 K 8°C 37%
07 0 0 0 4 3 0.45
-MV---UN-
19 m/s 05.1 05.8 0.6 K 8°C 37%
08 0 0 0 4 3 0.43
-MV-J-UN-
19 m/s 05.1 05.8 0.6 K 9°C 37%
09 0 0 0 4 3 0.41
LMV-J-U--
19 m/s 05.1 05.8 0.5 K 11°C 42%
10 0 0 0 5 4 0.39
LMV-J-U--
18 m/s 02.1 03.2 1.0 K 12°C 46%
11 0 0 0 5 4 0.36
LMV-J----
17 m/s 02.6 03.2 1.4 K 14°C 45%
12 0 0 0 5 4 0.33
LMVMJ----
16 m/s 02.6 03.2 1.2 K 15°C 40%
13 0 0 0 5 5 0.30
LMVMJS---
15 m/s 02.6 03.1 0.9 K 17°C 33%
14 0 0 0 5 5 0.28
LMVMJS---
16 m/s 02.6 03.1 0.7 K 18°C 26%
15 0 0 0 5 5 0.27
LMVMJS---
16 m/s 00.0 00.0 0.0 K 19°C 21%
16 0 0 0 5 5 0.28
LMVMJS---
16 m/s 00.0 00.0 0.0 K 21°C 21%
17 0 0 0 5 5 0.29
LM-MJS--P
16 m/s 00.0 00.0 0.0 K 20°C 22%
18 0 0 0 5 5 0.30
L--M-S--P
17 m/s 00.0 00.0 0.0 K 18°C 23%
19 0 0 0 5 5 0.31
L--M-S--P
17 m/s 00.0 00.0 0.0 K 18°C 23%
20 0 0 0 5 5 0.31
L--M-S--P
17 m/s 00.0 00.0 0.0 K 15°C 23%
21 0 0 0 5 5 0.31
---M-S-NP
17 m/s 02.0 02.6 0.5 K 11°C 23%
22 0 0 0 5 5 0.31
---M-S-NP
17 m/s 02.0 02.6 0.8 K 10°C 26%
23 0 0 0 5 5 0.32
---M-S-NP
15 m/s 02.0 02.6 1.0 K 10°C 32%
Wed
2014.07.30
07:10
18:07
09:09
21:23
waxing crescent (42°)
00 0 0 10 5 4 0.32
---M-SUNP
15 m/s 02.0 03.1 0.9 K 10°C 35%
01 0 0 18 5 4 0.33
-----SUNP
15 m/s 02.0 03.1 0.9 K 9°C 33%
02 0 0 20 5 4 0.34
------UNP
15 m/s 02.0 03.1 0.9 K 9°C 30%
03 0 0 26 5 4 0.34
------UNP
16 m/s 02.0 03.2 1.0 K 9°C 30%
04 0 0 34 5 4 0.35
------UNP
16 m/s 02.0 03.1 1.0 K 9°C 31%
05 0 0 42 5 4 0.34
------UNP
16 m/s 02.0 03.1 1.0 K 9°C 32%
06 0 0 40 5 4 0.35
--V---UN-
16 m/s 02.0 03.1 1.1 K 9°C 35%
07 0 0 33 5 4 0.35
-MV---UN-
17 m/s 02.1 03.2 1.1 K 9°C 34%
08 0 0 18 5 4 0.35
-MV-J-UN-
16 m/s 02.1 03.2 1.1 K 10°C 32%
09 0 0 0 5 3 0.36
-MV-J-U--
16 m/s 02.1 03.2 1.2 K 11°C 37%
10 0 0 0 5 4 0.37
LMV-J-U--
16 m/s 02.1 03.2 1.1 K 13°C 44%
11 0 0 0 5 4 0.37
LMV-J----
15 m/s 02.6 03.2 1.4 K 15°C 45%
12 0 0 0 5 5 0.36
LMVMJ----
15 m/s 02.6 03.2 1.2 K 16°C 43%
13 0 0 0 5 5 0.35
LMVMJS---
15 m/s 02.6 03.1 0.8 K 18°C 37%
14 0 0 0 5 5 0.34
LMVMJS---
15 m/s 00.0 00.0 0.0 K 19°C 31%
15 0 0 0 5 5 0.33
LMVMJS---
15 m/s 00.0 00.0 0.0 K 20°C 26%
16 0 0 0 5 5 0.33
LMVMJS---
16 m/s 00.0 00.0 0.0 K 21°C 24%
17 0 0 0 5 5 0.31
LM-MJS--P
19 m/s 00.0 00.0 0.0 K 21°C 21%
18 0 0 0 5 5 0.30
L--M-S--P
23 m/s 00.0 00.0 0.0 K 19°C 22%
19 0 0 0 5 5 0.32
L--M-S--P
23 m/s 00.0 00.0 0.0 K 18°C 23%
20 0 0 0 5 5 0.32
L--M-S--P
23 m/s 00.0 00.0 0.0 K 15°C 23%
21 0 0 0 5 5 0.31
L--M-S-NP
22 m/s 02.0 02.6 0.5 K 12°C 23%
22 0 0 0 5 5 0.29
---M-S-NP
23 m/s 02.0 02.6 0.7 K 10°C 26%
23 0 0 0 5 5 0.30
---M-S-NP
23 m/s 02.0 02.6 1.0 K 10°C 30%

Additional information to your astronomical seeing prediction:

  • Values may not reflect precisely reality
  • For good seeing conditions look for dark blue colours in the cloud cover and green values in the Seeing Indices and Jet Stream
  • The estimated seeing indexes (1 & 2) range from 1 (poor) to 5 (excellent) seeing conditions. This value is computed based on the integration of turbulent layers in the atmosphere.
  • Estimation of seeing in arcseconds. This is a test prediction under development, uncalibrated for the time being.
  • Cloud cover ranges from dark blue (0% cover) to white (100% cover). Fog or very low cloud is not shown here (see pictocast for fog)
  • High jetstream speeds (>35m/s) usually correspond to bad seeing, as well as very low speeds (<5m/s). Colour gives a hint.
  • Bad Layers have a Temperature Gradient > 0.5K/100m. The actual gradient is shown K/100m. The top and bottom height of the Bad layers is indicated by Bad Layers bot/top
  • Visible planets and coordinates also considering temperature profiles of the atmosphere. The following planets/objects are available: LMVMJSUNP => Lunar (Moon), Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.
  • If you move your courser over the visible planets column, hourly coordinates for each planet will appear: Azimuth (Az) from north with altitude in degree (Alt) onto horizon, right ascension (RA) and declination (DEC). We may consider adding 10 minutes coordinates and additional objects on request.