GoodSeeing
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Bahārestān

32.488° N   51.773° E  ·  1562 M
95 /100
PEAK
A genuinely good night — 3 hours of clear, dark sky from 01:30.
BEST WINDOW 01:30–04:30 · ASTRO DARK 21:30–04:30 · MOON 0%
Transparency
1.00
Seeing
0.94
Cloud
0%
Moon
0%

Excellent tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
21
22
23
00
01
02
03
04
05
53
41
31
28
85
93
95
46
0
BEST WINDOW
Low cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
Mid cloud
47%
60%
72%
78%
8%
0%
0%
1%
0%
High cloud
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
Seeing
0.70
0.58
0.56
0.78
0.66
0.73
0.80
0.94
1.00
Moon clear
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
21 Fair · 53/100
Starting from
100
Cloud
−42
Transparency
−0
Seeing
−4
Moonlight
−0
Darkness
−0
Score
53
CLOUD 47% LOW 0% MID 47% HIGH 0% SUN -29.3° MOON -27.7° / 0% WIND 5 TEMP 32°
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 01:00 · OBSERVE 01:30–04:30 · 3H · MEAN 95

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

2123010305
CLOUD BREAKS 01:30TWILIGHT BEGINS 04:30
SET UP 01:00 · OBSERVE 01:30–05:30 · 4H · MEAN 83

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

2123010305
CLOUD BREAKS 01:30TWILIGHT BEGINS 05:30MOONLIGHT IGNORED FOR THIS TARGET
SET UP 01:00 · OBSERVE 01:30–05:30 · 4H · MEAN 82

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

2123010305
CLOUD BREAKS 01:30TWILIGHT BEGINS 05:30
SET UP 01:00 · OBSERVE 01:30–05:30 · 4H · MEAN 79

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

2123010305
CLOUD BREAKS 01:30TWILIGHT BEGINS 05:30
SET UP 01:00 · OBSERVE 01:30–04:30 · 3H · MEAN 97

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

2123010305
CLOUD BREAKS 01:30TWILIGHT BEGINS 04:30
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The next week of nights

Tonight · 12 Aug
95
Excellent
MOON 0%
01:30–04:30
Tomorrow · 13 Aug
96
Excellent
MOON 2%
22:30–04:30
Friday · 14 Aug
100
Excellent
MOON 6%
21:30–04:30
Saturday · 15 Aug
99
Excellent
MOON 13%
03:30–04:30
Sunday · 16 Aug
99
Excellent
MOON 21%
03:30–04:30
Monday · 17 Aug
100
Excellent
MOON 30%
03:30–04:30
Tuesday · 18 Aug
100
Excellent
MOON 39%
03:30–04:30
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Nearby locations

About this forecast

Conditions for Bahārestān, Iran 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 →