Alpine.

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

Bortle Scale
2
Best Regional Reading
Sky Quality
21.62
SQM Zenith Value
Verified Sites
2
Community Vetted
Dark Sky Parks
2
IDA Certified Nearby

Quick Guide for Alpine

  • Top Community Pick: Historic Prude Ranch (~20.7 miles)
  • Best Scientific Reading: Bortle 3 at Skyline Drive
  • Local Experts: San Angelo Astronomy Association
  • Verified Observations: 2 distinct spots

If you’re looking to escape the light pollution of Alpine, you’re in luck. While enthusiasts often gather at Historic Prude Ranch for its accessibility, scientific audits conducted by the National Park Service at Skyline Drive provide the most accurate reading of the regional sky quality, measuring at a Bortle 3. The transition between the urban infrastructure of Alpine and the more rural stretches of TX creates several ‘dark sky’ corridors.

The Best Times for Stargazing in Alpine

For the best results in Alpine, 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 Alpine Observers

Before heading out to Historic Prude Ranch, we recommend arriving during civil twilight to scout the terrain safely. A medium-aperture telescope is ideal for resolving the rings of Saturn and bright star clusters this location. 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.

Texas Guide

Population 6,003
Coordinates 30.36, -103.67

Local Top Spots

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

Active Viewing Spot Confidence: 72.5%

Historic Prude Ranch

20.7 mi
Distance

" Standard Advice: Dress in layers as temperatures drop quickly after sunset. Use a red-light flashlight to preserve your night vision. "

Fort Davis, TX 79734
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Active Viewing Spot Confidence: 72.5%

Prude Ranch

24 mi
Distance

" Standard Advice: Dress in layers as temperatures drop quickly after sunset. Use a red-light flashlight to preserve your night vision. "

Fort Davis, TX 79734
Get Directions
Scientific Audit

NPS Sky Measurements

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

Skyline Drive

Davis Mountains State Park

21.58 SQM
Bortle Class 3

"Sky quality measurements were recorded at Skyline Drive in Davis Mountains State Park on 12/19/2022. The site demonstrated a scientific darkness reading of 21.58 SQM."

Observation Date
12/19/2022
Elevation
2030m
Zenith Brightness
21.81

Skyline Drive

Davis Mountains State Park

21.62 SQM
Bortle Class 2

"Sky quality measurements were recorded at Skyline Drive in Davis Mountains State Park on 4/23/2020. The site demonstrated a scientific darkness reading of 21.62 SQM."

Observation Date
4/23/2020
Elevation
1679m
Zenith Brightness
21.9

International Dark Sky Parks

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

IDA Certified Distance: 62.3 miles

Big Bend Ranch State Park

Big Bend Ranch State Park is a ~355,000 acres state park in the “Trans-Pecos” region of far west Texas, U.S. It extends along the U.S.

Category
Dark Sky Park
Certified
2017
Land Area
1,258 km2
Coordinates
29.5317, -104.0657
IDA Certified Distance: 72.0 miles

Black Gap Wildlife Management Area

Black Gap Wildlife Management Area (BGWMA or WMA) encompasses approximately 103,000 acres with relatively little development. The property is administered by…

Category
International Dark Sky Sanctuary
Certified
2021
Land Area
416.8 km2
Coordinates
29.5600, -102.9000

Local Astronomy Clubs

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

NASA Night Sky Club ID
#104

San Angelo Astronomy Association

San Angelo, TX

NASA Night Sky Club ID
#307

Amateur Astronomers Group

Alamogordo, NM