Antananarivo Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

20.14

Bortle class

Class 6 (Class 6)

Darkness Quotient

50%

Dataset

May 2026

Bright suburban sky

Antananarivo: The Practical Verdict

Antananarivo, the bustling capital of Madagascar, struggles with moderate light pollution due to its substantial population and dense urban setting. Observers will find the sky quality limited by suburban brightness, making it challenging for deep-sky observing. The Milky Way remains hidden, and the northern parts of the sky are notably brighter.

While the sky conditions may restrict your views to the Moon, planets, and bright open clusters, you can still enjoy double stars and attempt some narrowband imaging of bright nebula cores. Broadband galaxies and faint nebulae are not practical targets here due to the bright sky background.

For those willing to venture out, Marolambo in Atsinanana lies about south south east and provides a Bortle 2 sky, offering a vastly improved deep-sky experience compared to the city.

At a Glance

Overall

Limited suburban sky - This is a limited sky for astronomy. The brightest targets remain accessible, but faint deep-sky observing is heavily compromised.

Milky Way

Not visible - The sky background is generally too bright for a reliable Milky Way view.

Best targets from here

Moon, planets, double stars, bright open clusters, narrowband imaging, bright nebula cores

Do not prioritise

broadband galaxies, reflection nebulae, visual faint nebulae, Milky Way photography

Best nearby upgrade

Marolambo, Atsinanana sits about 112 km south south east and reaches Bortle 2, roughly 4.7x darker.

Good dark window

Antananarivo 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 Antananarivo?

No. Antananarivo is a Bortle Class 6 sky with SQM 20.14, 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 Antananarivo?

Antananarivo is Bortle Class 6 (SQM 20.14), a limited suburban sky for astronomy.

Is Antananarivo good for stargazing?

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

Is Antananarivo good for astrophotography?

Broadband deep-sky imaging is heavily compromised from Antananarivo and a Bortle 4 or darker site is strongly recommended. Narrowband imaging of bright emission nebulae remains viable from Antananarivo with appropriate Ha or OIII filters.

What can you observe from Antananarivo?

Primary targets from Antananarivo include Moon, planets, double stars, bright open clusters, narrowband imaging. Targets such as broadband galaxies, reflection nebulae, visual faint nebulae are not realistic from this sky.

Where are darker skies near Antananarivo?

The closest meaningfully darker mapped site is Moramanga, Alaotra-Mangoro, about 83 km east south east of Antananarivo, reaching Bortle 2.

When is the sky darkest in Antananarivo?

The sky over Antananarivo is darkest around June, July.

Is light pollution in Antananarivo getting better or worse?

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

• Moramanga, Alaotra-Mangoro

  Direction

  ESE

  Distance (km)

  82.5

  SQM

  21.75

  Bortle

  2

• Anosibe an'ala, Alaotra-Mangoro

  Direction

  SE

  Distance (km)

  86.2

  SQM

  21.78

  Bortle

  2

• Moramanga, Alaotra-Mangoro

  Direction

  E

  Distance (km)

  95.4

  SQM

  21.59

  Bortle

  3

• Marolambo, Atsinanana

  Direction

  SSE

  Distance (km)

  112.2

  SQM

  21.82

  Bortle

  2