Exeter Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

19.55

Bortle class

Class 7 (Class 7)

Darkness Quotient

41%

Dataset

April 2026

Suburban/urban transition

Exeter: The Practical Verdict

Exeter is a small city in Devon with skies burdened by moderate light pollution, typical of a suburban setting. Observing conditions are poor overall, with the Milky Way not visible and deep-sky astronomy largely out of reach.

The sky here offers reasonable views of brighter targets such as the Moon, planets, and double stars. Bright open clusters and emission nebulae are possible with narrowband imaging, but fainter objects like galaxies and reflection nebulae are not realistic here.

For a significant upgrade, Bishop's Nympton offers much darker skies about 35 km north-north-west of Exeter. This site provides conditions suitable for better deep-sky observation and imaging, especially for those looking to escape the local light pollution.

At a Glance

Overall

Poor urban/suburban sky - This is a poor sky for astronomy. The Moon, planets, and a few bright objects remain viable, but deep-sky work is difficult.

Milky Way

Not visible - The Milky Way is not realistically visible from this level of light pollution.

Best targets from here

Moon, planets, bright double stars, bright open clusters, narrowband imaging with careful processing

Do not prioritise

visual deep-sky observing, broadband galaxies, reflection nebulae, Milky Way photography

Best nearby upgrade

Bishop's Nympton sits about 34 km north north west and reaches Bortle 3, roughly 6.1x darker.

Moderate dark window

Exeter's longest dark windows fall in December and January, with the shortest nights around June and July. Plan deep-sky sessions around the autumn and winter months for the best combination of long nights and true astronomical darkness.

Frequently Asked Questions

Can you see the Milky Way from Exeter?

No. Exeter is a Bortle Class 7 sky with SQM 19.55, 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 Exeter?

Exeter is Bortle Class 7 (SQM 19.55), a poor urban/suburban sky for astronomy.

Is Exeter good for stargazing?

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

Is Exeter good for astrophotography?

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

What can you observe from Exeter?

Primary targets from Exeter include Moon, planets, bright double stars, bright open clusters, narrowband imaging with careful processing. Targets such as visual deep-sky observing, broadband galaxies, reflection nebulae are not realistic from this sky.

Where are darker skies near Exeter?

The closest meaningfully darker mapped site is Bishopsteignton, about 17 km south of Exeter, reaching Bortle 5.

When is the sky darkest in Exeter?

The sky over Exeter is darkest around January, December. Significant summer limitation: around 51 nights per year have no true astronomical darkness.

Is light pollution in Exeter getting better or worse?

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

• Bishop's Nympton

  Direction

  NNW

  Distance (km)

  34.1

  SQM

  21.52

  Bortle

  3

• Oakford Bridge

  Direction

  ESE

  Distance (km)

  30.4

  SQM

  21.38

  Bortle

  3

• Iddesleigh

  Direction

  WNW

  Distance (km)

  36.5

  SQM

  21.47

  Bortle

  3

• Bishopsteignton

  Direction

  S

  Distance (km)

  17.4

  SQM

  20.77

  Bortle

  5

• Memory Cross

  Direction

  SSW

  Distance (km)

  29.5

  SQM

  21.10

  Bortle

  4

• Tutwell

  Direction

  WSW

  Distance (km)

  55.2

  SQM

  21.43

  Bortle

  3