Kalgoorlie Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

19.15

Bortle class

Class 7 (Class 7)

Darkness Quotient

35%

Dataset

July 2026

Suburban/urban transition

Kalgoorlie: The Practical Verdict

Kalgoorlie, a small city located in Western Australia, suffers from high levels of light pollution. This makes it a poor choice for urban or suburban astronomy. The primary limiting factor is indeed the significant light pollution, which greatly affects visibility.

Here, the Milky Way is not realistically visible, and it is advisable to focus on brighter celestial objects. Observers can still enjoy the Moon, planets, and bright open clusters. However, deeper space objects like nebulae and galaxies are best avoided due to the high light pollution.

For those looking to experience a darker sky, Fraser Range in the east-south-east is about 235 km away and offers a substantial improvement with Bortle 2 conditions, making it worth the drive for serious deep-sky observing.

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

Fraser Range, Western Australia sits about 234 km east south east and reaches Bortle 2, roughly 12x darker.

Good dark window

Kalgoorlie's longest dark windows fall in June and July, with the shortest nights around December and January. For deep-sky imaging, winter gives the best combination of long nights and true astronomical darkness.

Frequently Asked Questions

Can you see the Milky Way from Kalgoorlie?

No. Kalgoorlie is a Bortle Class 7 sky with SQM 19.15, 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 Kalgoorlie?

Kalgoorlie is Bortle Class 7 (SQM 19.15), a poor urban/suburban sky for astronomy.

Is Kalgoorlie good for stargazing?

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

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

What can you observe from Kalgoorlie?

Primary targets from Kalgoorlie 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 Kalgoorlie?

The closest meaningfully darker mapped site is Norseman, Western Australia, about 189 km south south west of Kalgoorlie, reaching Bortle 2.

When is the sky darkest in Kalgoorlie?

The sky over Kalgoorlie is darkest around June, July.

Is light pollution in Kalgoorlie getting better or worse?

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

• Norseman, Western Australia

  Direction

  SSW

  Distance (km)

  188.6

  SQM

  21.79

  Bortle

  2

• Dundas, Western Australia

  Direction

  S

  Distance (km)

  190.4

  SQM

  21.55

  Bortle

  3

• Fraser Range, Western Australia

  Direction

  ESE

  Distance (km)

  234.2

  SQM

  21.83

  Bortle

  2