St Helens Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

18.57

Bortle class

Class 8 (Class 8)

Darkness Quotient

28%

Dataset

May 2026

City sky

St Helens: The Practical Verdict

St Helens, located in the Liverpool City Region, is a small city with substantial suburban light pollution. The overall quality for astrophotography and stargazing here is poor, with high light pollution considerably diminishing the night sky experience. The most significant limiting factor is the proximity to Liverpool's light dome, which overwhelms the western sky.

With the Milky Way completely obscured, practical observing must focus on targets less affected by light pollution. The Moon and bright planets stand out as viable subjects, alongside double stars and solar system events. While narrowband imaging can yield some results, broad deep-sky imaging will struggle due to the background light.

For markedly better conditions, High Fell to the north north west offers a meaningful upgrade. Situated about 120 km away, it provides a much darker environment, suitable for those seeking to observe deep-sky objects.

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

Best nearby upgrade

High Fell sits about 120 km north north west and reaches Bortle 3, roughly 12x darker.

Moderate dark window

St Helens's limiting factor is not only light pollution. Around midsummer, St Helens 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 St Helens?

No. St Helens is a Bortle Class 8 sky with SQM 18.57, 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 St Helens?

St Helens is Bortle Class 8 (SQM 18.57), a poor city sky for astronomy.

Is St Helens good for stargazing?

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

Is St Helens good for astrophotography?

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

What can you observe from St Helens?

Primary targets from St Helens 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 St Helens?

The closest meaningfully darker mapped site is Consall, about 67 km south east of St Helens, reaching Bortle 6.

When is the sky darkest in St Helens?

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

Is light pollution in St Helens getting better or worse?

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

• Caerhun

  Direction

  WSW

  Distance (km)

  87

  SQM

  20.52

  Bortle

  5

• High Fell

  Direction

  NNW

  Distance (km)

  119.8

  SQM

  21.31

  Bortle

  3

• Consall

  Direction

  SE

  Distance (km)

  66.7

  SQM

  19.90

  Bortle

  6

• Little London

  Direction

  NW

  Distance (km)

  146.4

  SQM

  21.53

  Bortle

  3

• Blaen-y-Cwm

  Direction

  SSW

  Distance (km)

  136.1

  SQM

  21.08

  Bortle

  4

• Dufton

  Direction

  SSE

  Distance (km)

  132.1

  SQM

  20.60

  Bortle

  5