Detroit Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

16.92

Bortle class

Class 9 (Class 9)

Darkness Quotient

15%

Dataset

April 2026

Inner city sky

Detroit: The Practical Verdict

Detroit, located in the state of Michigan, is a significant urban area within its region. The sky here is dominated by extreme light pollution, severely limiting the diversity of objects visible. This urban brightness makes it a poor location for stargazing beyond basic observations.

Within Detroit's light-drenched skies, only the brightest celestial objects are discernible. The Moon and planets remain reliable targets, along with selected prominent stars and double stars, offering some appeal for casual observation or targeted viewing. However, sights such as the Milky Way or faint nebulas are completely absent, and deep-sky observing is largely futile here.

The closest darker area with slightly better conditions is Norwich Township, about 140 km to the south. While this provides an improvement with skies of Bortle 5 quality, the enhancement over Detroit's urban glow is modest.

At a Glance

Overall

Severe urban sky - This is a severely light-polluted urban sky. Only the Moon, planets, bright stars, and a few specialist targets remain practical.

Milky Way

Not visible - The Milky Way is not visible from this sky.

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

Limited nearby upgrade

Norwich Township, Ohio is the strongest nearby option but remains Bortle 5; the improvement is real but modest.

Good dark window

Detroit'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 Detroit?

No. Detroit is a Bortle Class 9 sky with SQM 16.92, 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 Detroit?

Detroit is Bortle Class 9 (SQM 16.92), a severe urban sky for astronomy.

Is Detroit good for stargazing?

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

Is Detroit good for astrophotography?

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

What can you observe from Detroit?

Primary targets from Detroit 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 Detroit?

The closest meaningfully darker mapped site is Southwestern Ontario, Ontario, about 69 km east south east of Detroit, reaching Bortle 6.

When is the sky darkest in Detroit?

The sky over Detroit is darkest around January, December.

Is light pollution in Detroit getting better or worse?

There is not yet enough long-term data to give a confident trend for Detroit.

• Southwestern Ontario, Ontario

  Direction

  ESE

  Distance (km)

  68.6

  SQM

  19.73

  Bortle

  6

• Walnut, Ontario

  Direction

  NE

  Distance (km)

  103.9

  SQM

  20.23

  Bortle

  6

• Norwich Township, Ohio

  Direction

  S

  Distance (km)

  140.2

  SQM

  20.59

  Bortle

  5

• Marion Township, Ohio

  Direction

  SSW

  Distance (km)

  144.1

  SQM

  20.37

  Bortle

  5

• Hope Township, Michigan

  Direction

  W

  Distance (km)

  190

  SQM

  20.05

  Bortle

  6