State Research Hub

The Darkest Skies
in New Hampshire

We've analyzed scientific data across 15 locations in New Hampshire to find the ultimate destinations for deep-space observation.

National Park Service Champions

Scientific Rankings
1

Park Road

Mont-Megantic National Park

21.6 SQM
Bortle Class 3

"Clear, calm night with good transparency. A slight haze visible over the low horizon to the north. Seeing is fair. Fine detail in the Milky Way, with several easy deep-sky objects readily visible. The core of the Sherbrooke light dome is blocked by Mont Notre Dame and Mont Megantic creating a dark bowl like effect, excellent for visual observing. The light dome from Quebec city was visible low on the north horizon, parially blocked by trees, but still evident when dark adapted. No light dome was so bright as to interfere with dark adaptation."

Observation Date
9/23/2017
Elevation
520m
Zenith Brightness
21.86
2

Observatory

Mont-Megantic National Park

21.55 SQM
Bortle Class 4

"Clear, calm night with good transparency. A slight haze visible over the low horizon above Sherbrooke, and slight banding to the north."

Observation Date
9/22/2017
Elevation
1105m
Zenith Brightness
21.76
3

Province Lands VC

Cape Cod NS

21.13 SQM
Bortle Class 4

"When arrived, pilgrim lights were on. Bad glare from monument lights in town and also from airport and visitor center. Airport lighting is particularly troublesome. 21.30 SQM during first data set. Transparency seems uneven, perhaps some faint cirrus. Seeing is good. Milky way to the west when started, but could barley see faint knot in Auriga at 0245 UT. Monument lights went out at 0310, between second and third row of first set."

Observation Date
4/12/2010
Elevation
30m
Zenith Brightness
21.49
4

Concord Bridge

Minute Man NHP

20.23 SQM
Bortle Class 5

"Fog in field lowland, possibly some patchy fog. Bright site"

Observation Date
9/17/2007
Elevation
40m
Zenith Brightness
20.56

Certified Dark Sky Parks

IDA Registered

AMC Maine Woods

International Dark Sky Park

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…

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Katahdin Woods and Waters National Monument

International Dark Sky Sanctuary

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…

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