Phelps Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

21.35

Bortle class

Class 3 (Class 3)

Darkness Quotient

79%

Dataset

July 2026

Rural sky

Phelps: The Practical Verdict

Phelps, a remote location in Wisconsin, offers a strong rural sky that is very suitable for stargazing. With its very dark classification, it provides excellent conditions for observing many celestial objects. The primary limiting factor is some horizon glow, which might slightly reduce contrast when viewing the Milky Way.

The Milky Way itself should be visible on clear, moonless nights from Phelps. This location supports a variety of observing targets, including bright and moderate galaxies, emission nebulae, and meteor showers. Broadband imaging and observing open clusters or globular clusters can be very rewarding here. However, the weakest broadband targets should be avoided during poor transparency or moonlight.

As Phelps already offers substantial dark sky quality, there is no immediate need to travel for a better observational site. It stands as one of the strong locations itself and enthusiasts can enjoy a rich astronomical experience right here.

At a Glance

Overall

Strong rural sky - This is a strong rural sky with good deep-sky potential, although some horizon glow may still be visible.

Milky Way

Visible - The Milky Way should be visible on clear, moonless nights, although horizon glow may reduce contrast.

Best targets from here

Milky Way, bright and moderate galaxies, emission nebulae, globular clusters, open clusters, meteor showers

Do not prioritise

weakest broadband targets during poor transparency or moonlight

Already a strong sky

Phelps is already a strong astronomy location. There is no obvious reason to travel for a darker sky.

Good dark window

Phelps'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 Phelps?

Yes. The Milky Way is visible from Phelps on clear, moonless nights, although horizon glow may reduce contrast.

What Bortle class is Phelps?

Phelps is Bortle Class 3 (SQM 21.35), a strong rural sky for astronomy.

Is Phelps good for stargazing?

Yes. Phelps is a strong rural sky and supports serious stargazing including deep-sky observing.

Is Phelps good for astrophotography?

Broadband deep-sky imaging is realistic from Phelps. Narrowband imaging of bright emission nebulae remains viable from Phelps with appropriate Ha or OIII filters.

What can you observe from Phelps?

Primary targets from Phelps include Milky Way, bright and moderate galaxies, emission nebulae, globular clusters, open clusters. Targets such as weakest broadband targets during poor transparency or moonlight are not realistic from this sky.

Where are darker skies near Phelps?

No meaningfully darker mapped site was found within the search radius around Phelps.

When is the sky darkest in Phelps?

The sky over Phelps is darkest around January, December.

Is light pollution in Phelps getting better or worse?

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

• Town of Phelps, Wisconsin

  Direction

  SSW

  Distance (km)

  10

  SQM

  21.66

  Bortle

  3

• Marenisco Township, Michigan

  Direction

  WNW

  Distance (km)

  65.6

  SQM

  21.74

  Bortle

  2

• Town of Ainsworth, Wisconsin

  Direction

  S

  Distance (km)

  76.3

  SQM

  21.62

  Bortle

  3