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Sky tonight

A quick read on whether it's worth setting up tonight, and what to aim at once you have. Everything below is computed on your device — the one network call is to a free weather API, with no key or account behind it.

Where

No location set

Nothing is shared until you set one — it's never sent anywhere but the weather lookup.

When

Tonight

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Next 6 nights — tap one to jump the page to it
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How are you observing?

Setup

Your view

Walls, a roof overhang, trees — if part of the sky is blocked from where you'll be standing, save the limits once and the list below will only show what you can actually see.

Gear & sky

Aperture sets how faint you can go; field of view sets how big a target looks in frame. Pick a preset or type your own gear's numbers in.

Know your Bortle class? Type it directly — it drives both the limiting magnitude below and the rough exposure guidance on each target. The dropdown just fills in a typical value.

What's worth aiming at

Sorted by altitude, limited to what your sky and gear can actually pull out of the dark. Tap one for details.

Catalog: the Messier objects plus a few NGC/IC favourites. Positions, magnitudes and sizes from OpenNGC (CC BY-SA 4.0), filled in from Wikipedia where it has gaps.