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Carmen de Patagones

-40.803° S   62.983° W  ·  3 M
60 /100
PEAK
Worth setting up — 5 hours of workable sky from 02:00.
BEST WINDOW 02:00–07:00 · ASTRO DARK 21:00–07:00 · MOON 0%
Transparency
0.46
Seeing
1.00
Cloud
12%
Moon
0%

Good tonight

Hour by hour, local to Carmen de Patagones. Colour encodes the score and nothing else; every other measurement is luminance.

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
0
1
60
47
44
37
41
21
49
44
39
55
58
34
0
BEST WINDOW
Low cloud
1%
1%
0%
0%
0%
0%
0%
0%
0%
1%
9%
13%
14%
12%
11%
Mid cloud
23%
29%
6%
0%
0%
0%
0%
59%
33%
35%
20%
1%
0%
0%
0%
High cloud
89%
84%
22%
63%
70%
89%
75%
63%
1%
12%
46%
12%
0%
0%
0%
Transparency
0.59
0.46
0.37
0.31
0.30
0.30
0.27
0.24
0.24
0.24
0.22
0.20
0.19
0.19
0.21
Seeing
0.95
0.94
1.00
1.00
1.00
0.99
0.93
0.96
1.00
1.00
1.00
1.00
1.00
1.00
1.00
Moon clear
0%
down
down
down
down
down
down
down
down
down
down
down
down
down
down
Inspect

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Why this hour scored what it did
18 Clouded out · 0/100
Starting from
100
Cloud
−60
Transparency
−7
Seeing
−0
Moonlight
−0
Darkness
−33
Score
0
CLOUD 91% LOW 1% MID 23% HIGH 89% SUN 4.2° MOON 6.6° / 0% WIND 3 TEMP 8°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.
Tonight's limiting factor
Why thin high cloud ruins long exposures

Cirrus you can barely see will halo your bright stars, lift your background and vary between frames. Visual observers shrug it off. Long exposures integrate it, so it accumulates.

What are you doing tonight?

The same forecast, weighted for the target. Planetary work barely cares about moonlight; long exposures die on high cloud a visual observer would never notice.

SET UP 01:30 · OBSERVE 02:00–07:00 · 5H · MEAN 49

Darkness and moonlight dominate. Faint fuzzies need a genuinely dark sky more than they need steady air.

1820220002040608
HIGH CLOUD CLEARS 02:00TWILIGHT BEGINS 07:00
SET UP 01:30 · OBSERVE 02:00–08:00 · 6H · MEAN 62

Seeing is everything and moonlight is irrelevant. Bright targets punch through twilight, so darkness barely counts.

1820220002040608
HIGH CLOUD CLEARS 02:00TWILIGHT BEGINS 08:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 04:30 · OBSERVE 05:00–07:00 · 2H · MEAN 52

Tolerates soft seeing, but high cloud wrecks a wide frame and moonlight raises the background everywhere.

1820220002040608
HIGH CLOUD CLEARS 05:00TWILIGHT BEGINS 07:00
SET UP 04:30 · OBSERVE 05:00–07:00 · 2H · MEAN 41

Needs conditions to hold still for hours. Sustained transparency matters more than any single good hour.

1820220002040608
HIGH CLOUD CLEARS 05:00TWILIGHT BEGINS 07:00
SET UP 01:30 · OBSERVE 02:00–07:00 · 5H · MEAN 49

Naked eye, whole sky. Total cloud and moonlight are the only things that count.

1820220002040608
HIGH CLOUD CLEARS 02:00TWILIGHT BEGINS 07:00
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The next week of nights

Tonight · 12 Aug
60
Good
MOON 0%
02:00–07:00
Tomorrow · 13 Aug
55
Good
MOON 3%
21:00–23:00
Friday · 14 Aug
60
Good
MOON 7%
23:00–04:00
Saturday · 15 Aug
48
Fair
MOON 15%
03:00–04:00
Sunday · 16 Aug
32
Poor
MOON 23%
Monday · 17 Aug
69
Good
MOON 32%
03:00–04:00
Tuesday · 18 Aug
70
Good
MOON 42%
03:00–04:00
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Nearby locations

About this forecast

Conditions for Carmen de Patagones, Argentina are computed from the MET Norway forecast model for these exact coordinates, combined with sun and moon positions we calculate directly. The score weighs cloud cover by layer, atmospheric transparency, estimated seeing, moonlight and how dark the sky actually gets. Read the full method →