GoodSeeing
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New Halfa

15.330° N   35.599° E  ·  452 M
75 /100
PEAK
A genuinely good night — 9 hours of clear, dark sky from 20:00.
BEST WINDOW 20:00–05:00 · ASTRO DARK 20:00–05:00 · MOON 0%
Transparency
1.00
Seeing
0.91
Cloud
41%
Moon
0%

Excellent tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
20
21
22
23
00
01
02
03
04
05
06
65
75
48
45
46
48
46
47
47
0
0
BEST WINDOW
Low cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Mid cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
5%
High cloud
60%
41%
92%
97%
95%
91%
95%
92%
91%
58%
62%
Transparency
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.93
0.92
0.93
Seeing
0.86
0.91
0.87
0.85
0.85
0.84
0.81
0.81
0.83
0.84
0.84
Moon clear
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
20 Good · 65/100
Starting from
100
Cloud
−33
Transparency
−0
Seeing
−2
Moonlight
−0
Darkness
−0
Score
65
CLOUD 60% LOW 0% MID 0% HIGH 60% SUN -27.2° MOON -25.3° / 0% WIND 3 TEMP 34°
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
When a clear gap is worth driving for

Ask how long the gap is relative to your setup time and your exposure length. A two-hour gap is a real session for a visual observer and close to worthless for someone doing four-minute subs on a target that needs three hours.

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 20:00–05:00 · 9H · MEAN 49

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

202200020406
TWILIGHT BEGINS 05:00
SET UP 19:30 · OBSERVE 20:00–05:00 · 9H · MEAN 47

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

202200020406
TWILIGHT BEGINS 05:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 19:30 · OBSERVE 20:00–23:00 · 3H · MEAN 52

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

202200020406
SET UP 19:30 · OBSERVE 20:00–22:00 · 2H · MEAN 52

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

202200020406
CLOUD RETURNS 22:00
SET UP 19:30 · OBSERVE 20:00–05:00 · 9H · MEAN 43

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

202200020406
TWILIGHT BEGINS 05:00
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The next week of nights

Tonight · 12 Aug
75
Excellent
MOON 0%
20:00–05:00
Tomorrow · 13 Aug
85
Excellent
MOON 2%
20:00–23:00
Friday · 14 Aug
78
Excellent
MOON 6%
21:00–05:00
Saturday · 15 Aug
68
Good
MOON 13%
02:00–03:00
Sunday · 16 Aug
39
Fair
MOON 21%
02:00–03:00
Monday · 17 Aug
75
Excellent
MOON 30%
02:00–03:00
Tuesday · 18 Aug
51
Fair
MOON 39%
02:00–03:00
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Nearby locations

About this forecast

Conditions for New Halfa, Sudan 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 →