StarCast · Idaho · Bortle 1–2

Astrophotography in Craters of the Moon National Monument

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Planning guide · Bortle 1–2 · May–October

Where and When to Shoot in Craters of the Moon National Monument

The black lava absorbs heat during the day and radiates it overnight — summer nights are warmer than similar-elevation locations elsewhere. The lava field extends for miles with minimal vegetation — the flat black terrain and alien geological forms give unique foreground. The Loop Road through the monument gives access to cinder cones, lava tubes, and spatter cones.

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Inferno Cone Cinder Cone

The 800-foot cinder cone gives an elevated 360-degree view above the surrounding lava field — one of the strongest elevated positions in the monument. The cinder cone silhouette against the Milky Way with the lava field extending below is the signature Craters composition.

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Devil's Orchard Lava Field

The spatter cone field gives bizarre geological foreground — hardened lava formations rising from the flat basalt plain. The individual spatter cones give interesting silhouettes against the dark sky.

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Big Craters Overlook

The overlook above the largest lava sink in the monument gives a natural bowl foreground — the circular depression framing the sky overhead. The surrounding rim makes a natural leading-line composition.

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Broken Top Cinder Cone

The partially collapsed cinder cone on the loop road gives an asymmetric foreground — the broken rim creates a natural frame for the southern sky where the galactic core rises.

Season and gear

Best Season and What to Bring

Season: May–October · Loop Road closed in winter · New moon essential

Gear notes: Sturdy footwear for lava terrain, layers for overnight temperature drop, protect equipment from lava dust, headlamp essential

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StarCast Push Alerts

Save Craters of the Moon National Monument as a location in StarCast. Get a push alert when moon phase, cloud cover, and transparency align for a high-scoring night — before you make the drive. Exclusive to the iOS app.

Common Questions

Is Craters of the Moon National Monument good for astrophotography?

Craters of the Moon is a designated International Dark Sky Park — Bortle 1–2 sky over a vast lava field in central Idaho. The black basalt absorbs rather than reflects light, making it one of the darkest accessible locations in the lower 48. Check tonight's conditions on StarCast before making the drive — free on web, push alerts in the iOS app.

What Bortle class is Craters of the Moon National Monument?

Craters of the Moon National Monument is Bortle 1–2 — one of the darkest national parks in the US. StarCast shows Bortle class alongside moon phase and transparency for any location.

When is the best time for astrophotography in Craters of the Moon National Monument?

May–October · Loop Road closed in winter · New moon essential. Target new moon windows — within 5 days of new moon for a full dark window. StarCast shows moon phase for any date so you can plan trips months in advance.

How do I check conditions before driving to Craters of the Moon National Monument?

Check StarCast for Craters of the Moon National Monument — moon phase, Bortle class, transparency, and cloud cover scored together into a single 0–100 night sky score. Check 3–5 days out for planning, confirm 24–48 hours before when transparency and cloud timing are most accurate.

What is LightCast StarCast?

StarCast scores night sky conditions using moon phase, Bortle class, atmospheric transparency, and cloud cover. Push alerts notify you when a high-scoring night is forecast. Free on web at lightcastsuite.com/starcast, push notifications in the LightCast iOS app. $2.99/month after a 7-day free trial.