Galactic core · next 30 nights

Milky Way windows at Nelson

This tracks the Sagittarius galactic core only when the Sun is at least 18° below the horizon and the core is at least 10° high. It is geometry, not a weather promise.

Best night3 Nov1.3 h of core visibility in darkness

Highest core altitude23°near 22:00

Usable nights14 / 30Moonlight and cloud still decide image contrast.

Computed local geometry

Core hours after astronomical twilight

3 Nov1.3 h33% moon

4 Nov1.3 h23% moon

5 Nov1.3 h14% moon

6 Nov1.0 h8% moon

7 Nov0.7 h3% moon

8 Nov0.7 h1% moon

9 Nov0.7 h0% moon

10 Nov0.7 h2% moon

11 Nov0.7 h5% moon

12 Nov0.3 h10% moon

13 Nov0.3 h16% moon

14 Nov0.3 h23% moon

15 Nov0.3 h32% moon

16 Nov0.3 h41% moon

17 Novnone51% moon

18 Novnone61% moon

19 Novnone70% moon

20 Novnone79% moon

21 Novnone87% moon

22 Novnone94% moon

23 Novnone98% moon

24 Novnone100% moon

25 Novnone99% moon

26 Novnone95% moon

27 Novnone89% moon

28 Novnone81% moon

29 Novnone71% moon

30 Novnone60% moon

1 Decnone49% moon

2 Decnone38% moon

22:00–23:20

This is the widest geometric window in the next month. Check the live forecast before travelling, then favor the darkest moonless portion. Check live cloud and transparency →

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Same coordinates, different question

Moon

Moonless nights

Find the longest uninterrupted dark windows.

Core

Milky Way

See when the galactic core clears the horizon after dark.

−18°

Astronomical darkness

Track true darkness, including polar twilight.