GoodSeeing
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NamibRand Nature Reserve

-25.000° S   16.000° E  ·  1000 M
100 /100
PEAK
A genuinely good night — 11 hours of clear, dark sky from 20:00.
BEST WINDOW 20:00–07:00 · ASTRO DARK 20:00–07:00 · MOON 0%
Transparency
1.00
Seeing
1.00
Cloud
0%
Moon
0%

Excellent tonight

Hour by hour, local to NamibRand Nature Reserve. Colour encodes the score and nothing else; every other measurement is luminance.

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
19
20
21
22
23
00
01
02
03
04
05
06
07
08
0
100
97
100
99
98
98
96
96
96
96
96
4
0
BEST WINDOW
Low cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Mid cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
High cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Transparency
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
Seeing
0.78
1.00
0.88
0.99
0.97
0.93
0.92
0.84
0.82
0.83
0.84
0.85
0.85
0.83
Moon clear
down
down
down
down
down
down
down
down
down
down
down
down
down
0%
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
19 Clouded out · 0/100
Starting from
100
Cloud
−0
Transparency
−0
Seeing
−6
Moonlight
−0
Darkness
−95
Score
0
CLOUD 0% LOW 0% MID 0% HIGH 0% SUN -6.0° MOON -5.2° / 0% WIND 4 TEMP 22°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.

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 19:30 · OBSERVE 20:00–07:00 · 11H · MEAN 99

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

19212301030507
ASTRONOMICAL DARK FROM 20:00TWILIGHT BEGINS 07:00
SET UP 19:30 · OBSERVE 20:00–08:00 · 12H · MEAN 90

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

19212301030507
ASTRONOMICAL DARK FROM 20:00TWILIGHT BEGINS 08:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 19:30 · OBSERVE 20:00–07:00 · 11H · MEAN 99

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

19212301030507
ASTRONOMICAL DARK FROM 20:00TWILIGHT BEGINS 07:00
SET UP 19:30 · OBSERVE 20:00–07:00 · 11H · MEAN 99

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

19212301030507
ASTRONOMICAL DARK FROM 20:00TWILIGHT BEGINS 07:00
SET UP 19:30 · OBSERVE 20:00–07:00 · 11H · MEAN 100

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

19212301030507
ASTRONOMICAL DARK FROM 20:00TWILIGHT BEGINS 07:00
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The next week of nights

Tonight · 12 Aug
100
Excellent
MOON 0%
20:00–07:00
Tomorrow · 13 Aug
100
Excellent
MOON 2%
20:00–07:00
Friday · 14 Aug
100
Excellent
MOON 6%
20:00–07:00
Saturday · 15 Aug
100
Excellent
MOON 13%
02:00–03:00
Sunday · 16 Aug
100
Excellent
MOON 21%
02:00–03:00
Monday · 17 Aug
100
Excellent
MOON 30%
02:00–03:00
Tuesday · 18 Aug
100
Excellent
MOON 39%
02:00–03:00
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About this forecast

Conditions for NamibRand Nature Reserve, Namibia 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 →