Belo Horizonte Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

17.96

Bortle class

Class 9 (Class 9)

Darkness Quotient

23%

Dataset

April 2026

Inner city sky

Belo Horizonte: The Practical Verdict

Belo Horizonte, Brazil, is a major city nestled in the state of Minas Gerais. The sky here falls under severe urban sky conditions, with a dominant Bortle 9 rating. Stargazing within the city itself is highly limited due to substantial light pollution.

From this location, the brightest objects such as the Moon, planets, and double stars present the best opportunity for visual observation. Imaging is possible with narrowband techniques, but deep-sky broadband views are seriously impacted by the persistent skyglow. The Milky Way is not visible from this location.

For those seeking dramatically darker skies, Oliveira in Minas Gerais, located about 130 km south-west, offers conditions closer to Bortle 4 quality. This upgrade provides a meaningful improvement for deep-sky observations.

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

Best nearby upgrade

Oliveira, Minas Gerais sits about 129 km south west and reaches Bortle 4, roughly 18x darker.

Good dark window

Belo Horizonte retains astronomical darkness throughout the year, so seasonality is less extreme than at higher latitudes. The main limitation is light pollution, not the length of the dark window.

Frequently Asked Questions

Can you see the Milky Way from Belo Horizonte?

No. Belo Horizonte is a Bortle Class 9 sky with SQM 17.96, 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 Belo Horizonte?

Belo Horizonte is Bortle Class 9 (SQM 17.96), a severe urban sky for astronomy.

Is Belo Horizonte good for stargazing?

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

Is Belo Horizonte good for astrophotography?

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

What can you observe from Belo Horizonte?

Primary targets from Belo Horizonte 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 Belo Horizonte?

The closest meaningfully darker mapped site is Vargem da Lua, Minas Gerais, about 58 km east of Belo Horizonte, reaching Bortle 6.

When is the sky darkest in Belo Horizonte?

The sky over Belo Horizonte is darkest around June, July.

Is light pollution in Belo Horizonte getting better or worse?

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

• Vargem da Lua, Minas Gerais

  Direction

  E

  Distance (km)

  58.3

  SQM

  20.24

  Bortle

  6

• Oliveira, Minas Gerais

  Direction

  SW

  Distance (km)

  129.1

  SQM

  21.08

  Bortle

  4

• Piraúba, Minas Gerais

  Direction

  SSE

  Distance (km)

  178.7

  SQM

  20.76

  Bortle

  5

• Divino, Minas Gerais

  Direction

  ESE

  Distance (km)

  198.6

  SQM

  20.96

  Bortle

  4