Rotherham Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

18.42

Bortle class

Class 8 (Class 8)

Darkness Quotient

27%

Dataset

July 2026

City sky

Rotherham: The Practical Verdict

Rotherham is a small city in South Yorkshire, situated to the north-east of Sheffield. The city's skies are affected by high light pollution, leading to a poor overall astronomy quality. The Milky Way is completely erased from view due to the bright urban sky.

In practical terms, Rotherham's sky allows for observations of the Moon, planets, bright stars, and double stars. Narrowband imaging is possible but requires care. However, visual deep-sky observing is largely impractical here, given the poor conditions, with broadband galaxies and faint nebulae being particularly affected.

For those seeking darker skies, the best option is to travel to Llanfair Caereinion, located approximately 160 km west-south-west, which offers a significantly darker sky under Bortle class 4.

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

Llanfair Caereinion sits about 159 km west south west and reaches Bortle 4, roughly 11x darker.

Moderate dark window

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

No. Rotherham is a Bortle Class 8 sky with SQM 18.42, 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 Rotherham?

Rotherham is Bortle Class 8 (SQM 18.42), a poor city sky for astronomy.

Is Rotherham good for stargazing?

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

Is Rotherham good for astrophotography?

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

What can you observe from Rotherham?

Primary targets from Rotherham 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 Rotherham?

The closest meaningfully darker mapped site is Ballidon CP, about 41 km south south west of Rotherham, reaching Bortle 6.

When is the sky darkest in Rotherham?

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

Is light pollution in Rotherham getting better or worse?

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

• Ballidon CP

  Direction

  SSW

  Distance (km)

  40.7

  SQM

  20.10

  Bortle

  6

• Stainton by Langworth CP

  Direction

  ESE

  Distance (km)

  64.5

  SQM

  20.54

  Bortle

  5

• Huggate

  Direction

  NE

  Distance (km)

  77.3

  SQM

  20.49

  Bortle

  5

• Yearsley

  Direction

  E

  Distance (km)

  83.4

  SQM

  20.22

  Bortle

  6

• Lower Allithwaite

  Direction

  NW

  Distance (km)

  128.1

  SQM

  20.76

  Bortle

  5

• Llanfair Caereinion

  Direction

  WSW

  Distance (km)

  158.5

  SQM

  21.06

  Bortle

  4