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Djambala

-2.545° S   14.753° E  ·  623 M
60 /100
PEAK
Worth setting up — 3 hours of workable sky from 02:00.
BEST WINDOW 02:00–05:00 · ASTRO DARK 20:00–05:00 · MOON 0%
Transparency
0.29
Seeing
1.00
Cloud
18%
Moon
0%

Good tonight

Hour by hour, local to Djambala. 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
0
21
40
46
31
31
26
34
35
43
60
34
0
BEST WINDOW
Low cloud
13%
19%
11%
13%
16%
3%
17%
27%
9%
28%
2%
16%
95%
Mid cloud
10%
39%
38%
18%
9%
10%
13%
36%
15%
7%
2%
2%
6%
High cloud
9%
1%
10%
18%
77%
91%
91%
2%
56%
11%
16%
55%
76%
Transparency
0.38
0.10
0.29
0.26
0.26
0.26
0.24
0.23
0.10
0.20
0.21
0.18
0.16
Seeing
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.96
0.98
0.99
Moon clear
0%
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
−25
Transparency
−19
Seeing
−0
Moonlight
−0
Darkness
−57
Score
0
CLOUD 27% LOW 13% MID 10% HIGH 9% SUN 0.9° MOON 2.3° / 0% WIND 1 TEMP 24°
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 02:30 · OBSERVE 03:00–05:00 · 2H · MEAN 51

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

18202200020406
HIGH CLOUD CLEARS 03:00CLOUD RETURNS 05:00
SET UP 00:30 · OBSERVE 01:00–06:00 · 5H · MEAN 52

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

18202200020406
HIGH CLOUD CLEARS 01:00CLOUD RETURNS 06:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 02:30 · OBSERVE 03:00–05:00 · 2H · MEAN 46

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

18202200020406
HIGH CLOUD CLEARS 03:00CLOUD RETURNS 05:00
SET UP 03:30 · OBSERVE 04:00–05:00 · 1H · MEAN 43

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

18202200020406
CLOUD BREAKS 04:00CLOUD RETURNS 05:00
SET UP 02:30 · OBSERVE 03:00–05:00 · 2H · MEAN 53

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

18202200020406
HIGH CLOUD CLEARS 03:00CLOUD RETURNS 05:00
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The next week of nights

Tonight · 12 Aug
60
Good
MOON 0%
02:00–05:00
Tomorrow · 13 Aug
65
Good
MOON 2%
21:00–06:00
Friday · 14 Aug
61
Good
MOON 6%
01:00–06:00
Saturday · 15 Aug
52
Fair
MOON 13%
01:00–02:00
Sunday · 16 Aug
50
Fair
MOON 21%
01:00–02:00
Monday · 17 Aug
63
Good
MOON 30%
01:00–02:00
Tuesday · 18 Aug
71
Good
MOON 39%
01:00–02:00
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Nearby locations

About this forecast

Conditions for Djambala, Congo - Brazzaville 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 →