East Harwich.

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

Bortle Scale
4
Best Regional Reading
Sky Quality
21.6
SQM Zenith Value
Verified Sites
5
Community Vetted
Dark Sky Parks
2
IDA Certified Nearby

Quick Guide for East Harwich

  • Top Community Pick: Braintee High School (~61.1 miles)
  • Best Scientific Reading: Bortle 4 at Marconi Station
  • Local Experts: South Shore Astronomical Society
  • Verified Observations: 5 distinct spots

If you’re looking to escape the light pollution of East Harwich, you’re in luck. While enthusiasts often gather at Braintee High School for its accessibility, scientific audits conducted by the National Park Service at Marconi Station provide the most accurate reading of the regional sky quality, measuring at a Bortle 4. The transition between the urban infrastructure of East Harwich and the more rural stretches of MA creates several ‘dark sky’ corridors.

The Best Times for Stargazing in East Harwich

Since East Harwich sits in a transitional light zone, viewing is best during the New Moon or after midnight when some commercial lighting is reduced.

Expert Tips for East Harwich Observers

Before heading out to Braintee High School, 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 here. 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.

Local Top Spots

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

Active Viewing Spot Confidence: 77.5%

Braintee High School

61.1 mi
Distance

" 'Telescope setup area is the southeast corner of the student parking lot.' "

Braintree, MA 02184
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Active Viewing Spot Confidence: 82.5%

Blackstone Field

71.5 mi
Distance

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

Providence, RI 02906
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Active Viewing Spot Confidence: 72.5%

Mount Hope Farm

63 mi
Distance

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

Bristol, RI NaN
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Active Viewing Spot Confidence: 70%

Carpenter Museum

63.4 mi
Distance

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

Rehoboth, MA 02769
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Active Viewing Spot Confidence: 67.5%

Michael Van Leesten Bridge

71.1 mi
Distance

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

Providence, RI 02903
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Scientific Audit

NPS Sky Measurements

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

Marconi Station

Cape Cod NS

20.94 SQM
Bortle Class 4

"Sky quality measurements were recorded at Marconi Station in Cape Cod NS on 11/14/2004. The site demonstrated a scientific darkness reading of 20.94 SQM."

Observation Date
11/14/2004
Elevation
10m
Zenith Brightness
21.17

Marconi Overlook

Cape Cod NS

21.6 SQM
Bortle Class 4

"Site on a dune 50-80 feet above the ocean, towers and lighthouse lights south, but direct glare minimal, pretty good site for astronomy. Transparency good, daytime visibility 20 miles, seeing very good. Due north are some lights as bright as Jupiter, but all in all dark adaptation possible. Darkest part of the sky zenith and east of zenith, a circle of uniform darkness 15-20 degrees diameter. All around the sky is a glow, however, artificial, even with the ocean to the east. Brightest light dome Provincetown west, mingled with other towns to the south. About 200 degrees of the horizon is polluted from north to south. Light dome NW peach color, 60 degrees tall, 70 degrees wide, north 30 degrees tall, much dimmer. The combined light of these light domes definitely casts a shadow, but is soft, navigation is possible but not easy by this light. Ocean reflects light from the sky, but with dunes blocking light domes a good idea of night is achieved. Later as the Milky way rises, an idea of the natural night sky is definitely available, gegenschein is barely visible. Bortle 4, NELM 7.1."

Observation Date
4/12/2010
Elevation
38m
Zenith Brightness
21.95

International Dark Sky Parks

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

IDA Certified Distance: 153.2 miles

AMC Maine Woods

The Appalachian Mountain Club’s (AMC) Maine Woods Initiative lands consist of over 400 square kilometers of land in central Maine, U.S. The park is at the edge…

Category
International Dark Sky Park
Certified
2021
Land Area
404.25 km2
Coordinates
43.9229, -69.8848
IDA Certified Distance: 302.0 miles

Katahdin Woods and Waters National Monument

Within the North Woods of Maine, Katahdin Woods and Waters National Monument covers an area of approximately 87,500 acres within a larger landscape already…

Category
International Dark Sky Sanctuary
Certified
2020
Land Area
354 km2
Coordinates
45.9766, -68.7335

Local Astronomy Clubs

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

NASA Night Sky Club ID
#682

South Shore Astronomical Society

Norwell, MA

NASA Night Sky Club ID
#41

Astronomical Society of Southern New England

Rehoboth, MA