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Bortle 2 ★ IDA International Dark Sky Park 📍 Colorado, United States

Great Sand Dunes National Park

37.7916000° N, -105.5943000° E • Elevation: 2500m

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🌌 About This Observing Location

The tallest dunes in North America backed by the rugged Sangre de Cristo Mountains, offering an otherworldly surreal nightscape.

Bortle Scale Class 2
Elevation 2500 m
Latitude 37.792°
Longitude -105.594°

☁️ 4-Night Stargazing Cloud Forecast

Updated hourly via Open-Meteo
Thu, Oct 15
10%
Avg Night Cloud
Sunset: 18:24
Sunrise: 07:10
Optimal Sky
Fri, Oct 16
0%
Avg Night Cloud
Sunset: 18:23
Sunrise: 07:11
Optimal Sky
Sat, Oct 17
38%
Avg Night Cloud
Sunset: 18:22
Sunrise: 07:12
Fair Sky
Sun, Oct 18
100%
Avg Night Cloud
Sunset: 18:20
Sunrise: 07:13
Overcast Sky

✨ Darkness & Sky Quality

Class 2: Truly dark site with negligible glow.

Naked-Eye Limiting Mag: 7.1 – 7.5 mag
Milky Way Visibility: Brilliant with complex structures
Zodiacal Light: Distinct in spring/autumn

🛰️ ISS Transits & Flyovers

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Track this spot to compute personalized solar & lunar transit predictions.