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Kotel’nich

58.303° N   48.337° E  ·  121 M
41 /100
PEAK
Marginal, but there is a 1 hour gap from 00:00.
BEST WINDOW 00:00–01:00 · NO ASTRO DARK · MOON 0%
Transparency
0.18
Seeing
0.85
Cloud
20%
Moon
0%
At this latitude the sun never drops 18° below the horizon tonight, so astronomical darkness never arrives. Scores reflect the deepest twilight available.

Fair tonight

Hour by hour, local to Kotel’nich. 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
0
1
30
43
41
0
5
1
0
BEST WINDOW
Low cloud
100%
84%
8%
19%
27%
100%
86%
90%
66%
Mid cloud
48%
43%
16%
2%
2%
1%
1%
2%
2%
High cloud
99%
96%
0%
0%
0%
0%
0%
0%
0%
Transparency
0.10
0.10
0.18
0.17
0.17
0.17
0.18
0.10
0.19
Seeing
0.80
0.75
0.80
0.85
0.83
0.81
0.83
0.80
0.76
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
20 Clouded out · 0/100
Starting from
100
Cloud
−100
Transparency
−0
Seeing
−0
Moonlight
−0
Darkness
−0
Score
0
CLOUD 100% LOW 100% MID 48% HIGH 99% SUN -2.8° MOON -0.7° / 0% WIND 4 TEMP 16°
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 22:30 · OBSERVE 23:00–01:00 · 2H · MEAN 40

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

2022000204
CLOUD RETURNS 01:00
SET UP 21:30 · OBSERVE 22:00–01:00 · 3H · MEAN 56

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

2022000204
HIGH CLOUD CLEARS 22:00CLOUD RETURNS 01:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 22:30 · OBSERVE 23:00–01:00 · 2H · MEAN 39

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

2022000204
CLOUD RETURNS 01:00
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2022000204
CONDITIONS STAY BELOW THE USABLE THRESHOLD
SET UP 22:30 · OBSERVE 23:00–01:00 · 2H · MEAN 43

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

2022000204
CLOUD RETURNS 01:00
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The next week of nights

Tonight · 12 Aug
41
Fair
MOON 0%
00:00–01:00
Tomorrow · 13 Aug
11
Clouded out
MOON 2%
Friday · 14 Aug
3
Clouded out
MOON 6%
Saturday · 15 Aug
3
Clouded out
MOON 13%
Sunday · 16 Aug
19
Poor
MOON 21%
Monday · 17 Aug
19
Poor
MOON 30%
Tuesday · 18 Aug
17
Poor
MOON 39%
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About this forecast

Conditions for Kotel’nich, Russia 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 →