Dublin Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

17.56

Bortle class

Class 9 (Class 9)

Darkness Quotient

19%

Dataset

May 2026

Inner city sky

Dublin: The Practical Verdict

Dublin, the bustling capital of Ireland, is a major city located in the Leinster region. The city's sky is hampered by extreme light pollution, making it a difficult urban sky for astronomy. The primary limiting factor here is the pervasive light dome, reducing the visible night sky to a select few bright celestial objects.

Under the bright skies over Dublin, the Milky Way is not visible, and most visual deep-sky observing efforts will be thwarted. However, the Moon, planets, and bright stars remain accessible, along with double stars and solar system events. Narrowband imaging can still yield results, though broadband imaging will face considerable obstacles from sky brightness.

For those seeking a meaningful upgrade, Ballaugh, around 155 km to the north-east, offers a Bortle Class 3 sky. This provides a notable improvement for deep-sky observation enthusiasts willing to make the drive.

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

Ballaugh sits about 154 km north east and reaches Bortle 3, roughly 44x darker.

Moderate dark window

Dublin's limiting factor is not only light pollution. Around midsummer, Dublin loses true astronomical darkness entirely, so deep-sky observing and imaging are strongly seasonal. Plan serious sessions around the darker months.

Frequently Asked Questions

Can you see the Milky Way from Dublin?

No. Dublin is a Bortle Class 9 sky with SQM 17.56, 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 Dublin?

Dublin is Bortle Class 9 (SQM 17.56), a severe urban sky for astronomy.

Is Dublin good for stargazing?

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

Is Dublin good for astrophotography?

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

What can you observe from Dublin?

Primary targets from Dublin 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 Dublin?

The closest meaningfully darker mapped site is Craanhill, about 71 km south of Dublin, reaching Bortle 4.

When is the sky darkest in Dublin?

The sky over Dublin is darkest around January, December. Significant summer limitation: around 77 nights per year have no true astronomical darkness.

Is light pollution in Dublin getting better or worse?

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

• Craanhill

  Direction

  S

  Distance (km)

  71

  SQM

  21.02

  Bortle

  4

• Cerrigceinwen

  Direction

  E

  Distance (km)

  125.5

  SQM

  21.58

  Bortle

  3

• Armagh City, Banbridge and Craigavon District Council

  Direction

  ENE

  Distance (km)

  108.1

  SQM

  20.83

  Bortle

  4

• Carrowreagh Electoral Division

  Direction

  W

  Distance (km)

  128.4

  SQM

  21.33

  Bortle

  3

• Tattenabuddagh

  Direction

  NNW

  Distance (km)

  129.1

  SQM

  21.15

  Bortle

  4

• Ballaugh

  Direction

  NE

  Distance (km)

  153.9

  SQM

  21.68

  Bortle

  3