Miles City.

The definitive guide to dark skies and celestial observation in Miles City, MT. Verified using National Park Service and NASA Night Sky Network Clubs data.

Bortle Scale
3
Best Regional Reading
Sky Quality
21.58
SQM Zenith Value
Verified Sites
0
Community Vetted
Dark Sky Parks
2
IDA Certified Nearby

Quick Guide for Miles City

  • Top Community Pick: local vantage points (~N/A miles)
  • Best Scientific Reading: Bortle 3.0 at Calhoun Hill
  • Local Experts: Yellowstone Valley Astronomy Association
  • Verified Observations: 0 distinct spots

Stargazing in Miles City is surprisingly rewarding if you know exactly where to set up your tripod. While enthusiasts often gather at local vantage points for its accessibility, scientific audits conducted by the National Park Service at Calhoun Hill provide the most accurate reading of the regional sky quality, measuring at a Bortle 3.0. The transition between the urban infrastructure of Miles City and the more rural stretches of MT creates several ‘dark sky’ corridors.

The Best Times for Stargazing in Miles City

For the best results in Miles City, aim for a ‘New Moon’ window. In these dark-sky conditions, the absence of moonlight allows the Milky Way to cast visible shadows.

Expert Tips for Miles City Observers

Before heading out to local vantage points, we recommend arriving during civil twilight to scout the terrain safely. Binoculars are a favorite for regulars this location for sweeping views of the Moon’s craters and larger constellations. Local enthusiasts often frequent this spot, making it a great place to meet experienced observers. Regardless of your gear, allow 30 minutes for your eyes to fully dark-adapt.

Montana Guide

Population 8,412
Coordinates 46.41, -105.84

Nearby Cities

Local Top Spots

Community-vetted locations known for clear horizons and accessibility for telescopes and astrophotography.

Scientific Audit

NPS Sky Measurements

Instrumented readings from the National Park Service Night Sky Program, providing the most accurate SQM and Bortle classifications.

Calhoun Hill

Little Bighorn Battlefield NM

21.58 SQM
Bortle Class 3

"Clear night with fair transparency above 20 degrees. Haze visible along the horizon. Seeing fair. Local light from the reservation was direct glare, while the light dome from Hardin was the largest. Billings and Sheridan light domes visible but not bright. Overall the direct glare was distracting, but blocking this allowed for dark adaptation. Milky Way was easily seen with detail in sagittarius, and dust lanes. Visible from tail of Scorpius in South to Cassiopeia. SQM 21.64 at 0130; SQM-L 21.63 at 0152."

Observation Date
5/7/2013
Elevation
1010m
Zenith Brightness
21.92

Skyline Vista

Theodore Roosevelt NP

21.45 SQM
Bortle Class 3

"Sky quality measurements were recorded at Skyline Vista in Theodore Roosevelt NP on 9/30/2010. The site demonstrated a scientific darkness reading of 21.45 SQM."

Observation Date
9/30/2010
Elevation
780m
Zenith Brightness
21.46

International Dark Sky Parks

Premier locations certified for their exceptional dark sky quality and commitment to light pollution mitigation.

IDA Certified Distance: 70.0 miles

Medicine Rocks State Park

Medicine Rocks State Park is full of history, culture, unique topography, and wonderfully dark skies. The park is also a haven for wildlife. They host dark sky…

Category
International Dark Sky Sanctuary
Certified
2020
Land Area
1.4 km2
Coordinates
46.0444, -104.4713
IDA Certified Distance: 290.3 miles

Teton County

Teton County, Wyoming, lies at the heart of the Greater Yellowstone Ecosystem, the largest intact ecosystem in the contiguous United States.

Category
International Dark Sky Community
Certified
2025
Land Area
10,920 km
Coordinates
43.9139, -110.6380

Local Astronomy Clubs

Connect with experts and fellow enthusiasts through local astronomical societies and community groups.

NASA Night Sky Club ID
#660

Yellowstone Valley Astronomy Association

Billings, MT

NASA Night Sky Club ID
#329

Southwest Montana Astronomical Society

Bozeman, MT