Olathe Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

18.38

Bortle class

Class 8 (Class 8)

Darkness Quotient

26%

Dataset

May 2026

City sky

Olathe: The Practical Verdict

Olathe, a small city in Kansas with a suburban character, finds itself under a veil of high light pollution. The overall quality for stargazing is decidedly poor, with the bright urban sky completely erasing any views of the Milky Way. The close proximity to Kansas City further exacerbates the issue.

From Olathe, your best astronomy choices are the Moon, planets, and bright stars. While bright open clusters can be seen with some care, targets like broadband galaxies and most deep-sky objects are best avoided due to the overwhelming light pollution. The cleanest horizons to observe are towards the west, but even there visibility of more subtle objects remains challenging.

For a significant improvement in sky quality, consider the location near F Road, Kansas, about 165 km to the north-west. The drive is worthwhile for those interested in deep-sky observing as this site offers a marked upgrade in conditions.

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

F Road, Kansas sits about 165 km north west and reaches Bortle 4, roughly 14x darker.

Good dark window

Olathe'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 Olathe?

No. Olathe is a Bortle Class 8 sky with SQM 18.38, 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 Olathe?

Olathe is Bortle Class 8 (SQM 18.38), a poor city sky for astronomy.

Is Olathe good for stargazing?

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

Is Olathe good for astrophotography?

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

What can you observe from Olathe?

Primary targets from Olathe 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 Olathe?

The closest meaningfully darker mapped site is Bismark Grove, Kansas, about 35 km west north west of Olathe, reaching Bortle 6.

When is the sky darkest in Olathe?

The sky over Olathe is darkest around January, December.

Is light pollution in Olathe getting better or worse?

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

• Bismark Grove, Kansas

  Direction

  WNW

  Distance (km)

  34.5

  SQM

  19.99

  Bortle

  6

• F Road, Kansas

  Direction

  NW

  Distance (km)

  165.2

  SQM

  21.21

  Bortle

  4

• Angola, Kansas

  Direction

  SSW

  Distance (km)

  207.8

  SQM

  21.03

  Bortle

  4