Carlisle Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

19.33

Bortle class

Class 7 (Class 7)

Darkness Quotient

37%

Dataset

April 2026

Suburban/urban transition

Carlisle: The Practical Verdict

Carlisle, situated in Cumberland, is a small city with high light pollution impacting sky observations. The overall sky quality is poor for stargazing, with urban and suburban brightness heavily limiting observations. The Milky Way is not visible under these conditions.

From Carlisle, stargazing opportunities are primarily limited to the brightest objects such as the Moon, planets, and star clusters. Deep-sky astronomy struggles here due to interference from local light sources. Imaging of bright nebulae can be achieved through narrowband techniques but requires careful planning.

For improved observation conditions, Kelsick, located about 20 km west south-west, offers notably darker skies under Bortle 3 class, making it a much better choice for enthusiasts, especially those keen on deep-sky targets.

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

Kelsick sits about 18 km west south west and reaches Bortle 3, roughly 6.9x darker.

Moderate dark window

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

No. Carlisle is a Bortle Class 7 sky with SQM 19.33, 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 Carlisle?

Carlisle is Bortle Class 7 (SQM 19.33), a poor urban/suburban sky for astronomy.

Is Carlisle good for stargazing?

Not for serious deep-sky observing. Carlisle 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 Carlisle good for astrophotography?

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

What can you observe from Carlisle?

Primary targets from Carlisle 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 Carlisle?

The closest meaningfully darker mapped site is Kelsick, about 18 km west south west of Carlisle, reaching Bortle 3.

When is the sky darkest in Carlisle?

The sky over Carlisle is darkest around January, December. Significant summer limitation: around 89 nights per year have no true astronomical darkness.

Is light pollution in Carlisle getting better or worse?

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

• Kelsick

  Direction

  WSW

  Distance (km)

  17.5

  SQM

  21.42

  Bortle

  3

• Watendlath

  Direction

  SSW

  Distance (km)

  39.4

  SQM

  21.50

  Bortle

  3

• B711

  Direction

  W

  Distance (km)

  57.5

  SQM

  21.41

  Bortle

  3

• Sandysike Rigg

  Direction

  ENE

  Distance (km)

  53.9

  SQM

  21.26

  Bortle

  4

• Spittal on Rule

  Direction

  NNE

  Distance (km)

  64.7

  SQM

  21.57

  Bortle

  3

• Portpatrick Railway

  Direction

  W

  Distance (km)

  80.2

  SQM

  21.63

  Bortle

  3