Greenfield Park Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

18.25

Bortle class

Class 8 (Class 8)

Darkness Quotient

25%

Dataset

May 2026

City sky

Greenfield Park: The Practical Verdict

Greenfield Park, located in Quebec, represents a dark-sky site with a setting dominated by high light pollution. The overall stargazing quality is poor as the urban sky masks the delicate features. The primary limiting factor here is the bright urban sky background which leaves the Milky Way erased.

From this location, the Moon, planets, and bright stars are the most reliable targets when stargazing. Double stars and solar system events provide good opportunities when observing from here. However, deep-sky objects or widefield Milky Way photography are best avoided due to the light interference.

Given that this site is already among the darker ones available nearby, there is no clear necessity to travel for significantly better conditions. The challenging sky conditions are inherent, so focusing on what is visible here is the best approach.

At a Glance

Overall

Poor city sky - This is a poor city sky. The Milky Way is not visible and most deep-sky observing is unrealistic from the location itself.

Milky Way

Not visible - The Milky Way is erased by the bright urban sky background.

Best targets from here

Moon, planets, bright stars, double stars, solar system events, narrowband imaging only with care

Do not prioritise

visual deep-sky observing, broadband galaxies, reflection nebulae, widefield Milky Way

Already a strong sky

Greenfield Park is already a strong astronomy location. There is no obvious reason to travel for a darker sky.

Good dark window

Greenfield Park's longest dark windows fall in December and January, with the shortest nights around June and July. Plan deep-sky sessions around the autumn and winter months for the best combination of long nights and true astronomical darkness.

Frequently Asked Questions

Can you see the Milky Way from Greenfield Park?

No. Greenfield Park is a Bortle Class 8 sky with SQM 18.25, so the Milky Way is not visible from the city. For Milky Way photography, look for a Bortle 4 or darker site.

What Bortle class is Greenfield Park?

Greenfield Park is Bortle Class 8 (SQM 18.25), a poor city sky for astronomy.

Is Greenfield Park good for stargazing?

Not for serious deep-sky observing. Greenfield Park is a poor city sky where the Moon, planets, and a handful of bright targets are the realistic options from the city itself.

Is Greenfield Park good for astrophotography?

Broadband deep-sky imaging is heavily compromised from Greenfield Park and a Bortle 4 or darker site is strongly recommended. Even narrowband imaging is difficult from Greenfield Park without careful processing.

What can you observe from Greenfield Park?

Primary targets from Greenfield Park include Moon, planets, bright stars, double stars, solar system events. Targets such as visual deep-sky observing, broadband galaxies, reflection nebulae are not realistic from this sky.

Where are darker skies near Greenfield Park?

The closest meaningfully darker mapped site is Ange-Gardien, Quebec, about 41 km east south east of Greenfield Park, reaching Bortle 6.

When is the sky darkest in Greenfield Park?

The sky over Greenfield Park is darkest around January, December.

Is light pollution in Greenfield Park getting better or worse?

Long-term light pollution over Greenfield Park has been broadly stable across the available measurements.

• Ange-Gardien, Quebec

  Direction

  ESE

  Distance (km)

  40.8

  SQM

  20.00

  Bortle

  6

• Saint-Nazaire-d'Acton, Quebec

  Direction

  ENE

  Distance (km)

  70.1

  SQM

  20.33

  Bortle

  5

• The Nation, Ontario

  Direction

  W

  Distance (km)

  104.7

  SQM

  20.25

  Bortle

  6

• Topsham, Vermont

  Direction

  SE

  Distance (km)

  175

  SQM

  21.06

  Bortle

  4

• C Surplus, Maine

  Direction

  ESE

  Distance (km)

  217.1

  SQM

  21.23

  Bortle

  4