GoodSeeing
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Dalain Hob

41.965° N   101.064° E  ·  938 M
88 /100
PEAK
A genuinely good night — 3 hours of clear, dark sky from 02:00.
BEST WINDOW 02:00–05:00 · ASTRO DARK 02:00–05:00 · MOON 0%
Transparency
0.80
Seeing
0.86
Cloud
0%
Moon
0%

Excellent tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
02
03
04
05
06
87
88
87
58
0
BEST WINDOW
Low cloud
0%
0%
0%
0%
0%
Mid cloud
0%
1%
0%
0%
0%
High cloud
0%
0%
0%
0%
0%
Transparency
0.77
0.80
0.75
0.72
0.70
Seeing
0.84
0.85
0.86
0.86
0.87
Moon clear
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
02 Excellent · 87/100
Starting from
100
Cloud
−0
Transparency
−9
Seeing
−4
Moonlight
−0
Darkness
−0
Score
87
CLOUD 0% LOW 0% MID 0% HIGH 0% SUN -32.4° MOON -31.9° / 0% WIND 4 TEMP 20°
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
What the GoodSeeing score actually measures

One number from 0 to 100 per hour, combining cloud, transparency, seeing, moonlight and darkness. Cloud gates everything else — no amount of steady, dark air rescues an overcast sky.

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 02:00–06:00 · 4H · MEAN 79

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

020406
TWILIGHT BEGINS 06:00
SET UP 01:30 · OBSERVE 02:00–06:00 · 4H · MEAN 86

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

020406
TWILIGHT BEGINS 06:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 01:30 · OBSERVE 02:00–06:00 · 4H · MEAN 79

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

020406
TWILIGHT BEGINS 06:00
SET UP 01:30 · OBSERVE 02:00–06:00 · 4H · MEAN 75

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

020406
TWILIGHT BEGINS 06:00
SET UP 01:30 · OBSERVE 02:00–06:00 · 4H · MEAN 83

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

020406
TWILIGHT BEGINS 06:00
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The next week of nights

Tonight · 12 Aug
88
Excellent
MOON 0%
02:00–05:00
Tomorrow · 13 Aug
94
Excellent
MOON 1%
22:00–05:00
Friday · 14 Aug
97
Excellent
MOON 5%
22:00–05:00
Saturday · 15 Aug
81
Excellent
MOON 10%
02:00–03:00
Sunday · 16 Aug
10
Clouded out
MOON 19%
Monday · 17 Aug
95
Excellent
MOON 28%
02:00–03:00
Tuesday · 18 Aug
99
Excellent
MOON 37%
02:00–03:00
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About this forecast

Conditions for Dalain Hob, China 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 →