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Resistencia

-27.464° S   58.987° W  ·  45 M
60 /100
PEAK
Worth setting up — 3 hours of workable sky from 04:00.
BEST WINDOW 04:00–07:00 · ASTRO DARK 20:00–07:00 · MOON 0%
Transparency
0.25
Seeing
1.00
Cloud
9%
Moon
0%

Good tonight

Hour by hour, local to Resistencia. 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
2
31
30
33
54
26
5
4
15
54
59
60
0
0
BEST WINDOW
Low cloud
0%
0%
0%
0%
0%
0%
11%
5%
3%
6%
2%
3%
9%
100%
100%
Mid cloud
38%
4%
1%
9%
2%
10%
43%
99%
100%
66%
13%
8%
1%
0%
0%
High cloud
69%
46%
94%
96%
94%
20%
41%
47%
59%
76%
11%
1%
0%
0%
0%
Transparency
0.10
0.10
0.10
0.24
0.25
0.20
0.10
0.10
0.18
0.18
0.17
0.17
0.16
0.16
0.16
Seeing
1.00
1.00
1.00
1.00
1.00
0.92
0.90
0.93
0.93
0.94
0.96
0.95
1.00
0.89
0.82
Moon clear
0%
down
down
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down
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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
−59
Transparency
−15
Seeing
−0
Moonlight
−0
Darkness
−26
Score
0
CLOUD 82% LOW 0% MID 38% HIGH 69% SUN 6.2° MOON 9.0° / 0% WIND 1 TEMP 15°
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 03:30 · OBSERVE 04:00–07:00 · 3H · MEAN 58

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

1820220002040608
HIGH CLOUD CLEARS 04:00CLOUD RETURNS 07:00
SET UP 19:30 · OBSERVE 20:00–00:00 · 4H · MEAN 44

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

1820220002040608
ASTRONOMICAL DARK FROM 20:00CLOUD RETURNS 00:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 03:30 · OBSERVE 04:00–07:00 · 3H · MEAN 53

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

1820220002040608
HIGH CLOUD CLEARS 04:00CLOUD RETURNS 07:00
SET UP 03:30 · OBSERVE 04:00–07:00 · 3H · MEAN 42

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

1820220002040608
HIGH CLOUD CLEARS 04:00CLOUD RETURNS 07:00
SET UP 03:30 · OBSERVE 04:00–07:00 · 3H · MEAN 61

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

1820220002040608
HIGH CLOUD CLEARS 04:00CLOUD RETURNS 07:00
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The next week of nights

Tonight · 12 Aug
60
Good
MOON 0%
04:00–07:00
Tomorrow · 13 Aug
15
Poor
MOON 3%
Friday · 14 Aug
58
Good
MOON 7%
00:00–03:00
Saturday · 15 Aug
27
Poor
MOON 15%
Sunday · 16 Aug
43
Fair
MOON 23%
21:00–22:00
Monday · 17 Aug
30
Poor
MOON 32%
Tuesday · 18 Aug
0
Clouded out
MOON 42%
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Nearby locations

About this forecast

Conditions for Resistencia, 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 →