Galactic core · next 30 nights

Milky Way windows at Sault Ste. Marie

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 night19 Sept0.0 h of core visibility in darkness

Highest core altitude9°near 21:40

Usable nights0 / 30Moonlight and cloud still decide image contrast.

Computed local geometry

Core hours after astronomical twilight

19 Septnone62% moon

20 Septnone71% moon

21 Septnone80% moon

22 Septnone87% moon

23 Septnone93% moon

24 Septnone97% moon

25 Septnone100% moon

26 Septnone100% moon

27 Septnone98% moon

28 Septnone93% moon

29 Septnone86% moon

30 Septnone77% moon

1 Octnone67% moon

2 Octnone55% moon

3 Octnone43% moon

4 Octnone32% moon

5 Octnone22% moon

6 Octnone13% moon

7 Octnone6% moon

8 Octnone2% moon

9 Octnone0% moon

10 Octnone1% moon

11 Octnone3% moon

12 Octnone7% moon

13 Octnone13% moon

14 Octnone20% moon

15 Octnone28% moon

16 Octnone37% moon

17 Octnone46% moon

18 Octnone55% moon

No dark core window

At this location and season, the core does not reach 10° during astronomical darkness in the next 30 nights. 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.