Bojonggambir Stargazing & Astronomy Report

Key Sky Quality Metrics

SQM (mag/arcsec²)

20.82

Bortle class

Class 4 (Class 4)

Darkness Quotient

65%

Dataset

April 2026

Rural/suburban transition

Bojonggambir: The Practical Verdict

Bojonggambir, a small hamlet in West Java, offers a sky with low light pollution, providing acceptable conditions for amateur astronomy. The overall quality is classified as a "good workable sky", suitable for observing under specific conditions such as moonless and transparent nights. Bright horizons towards the east-north-east slightly hinder visibility, but the south-west remains relatively clean and optimal.

Under these skies, bright galaxies, emission nebulae, and open clusters are accessible with good equipment. The Milky Way can manifest faintly, adding some charm when conditions allow. However, engaging in activities such as Milky Way photography or observing faint nebulae may prove challenging due to the marginal light pollution. Imaging work is viable but requires attention to local transparency and equipment tuning.

Though darker skies are nearby, such as in Maroko about 15 km to the south-west, the improvement, while measurable, is modest. Prioritising local observing conditions—such as choosing clear, dry nights—will often outweigh the need to relocate for better skies.

At a Glance

Overall

Good workable sky - This is a good workable astronomy location. The sky is not pristine, but many deep-sky targets remain accessible.

Milky Way

Faint or conditional - The Milky Way may be visible under transparent, moonless conditions, but it will not have strong dark-site contrast.

Best targets from here

bright galaxies, emission nebulae, open clusters, globular clusters, Milky Way under good conditions, widefield imaging

Do not prioritise

very low surface-brightness objects, ambitious Milky Way photography under mediocre transparency

No meaningful upgrade nearby

Nearby sites are not notably darker. Local conditions will matter more than chasing a slightly darker map value.

Good dark window

Bojonggambir retains astronomical darkness throughout the year, so seasonality is less extreme than at higher latitudes. The main limitation is light pollution, not the length of the dark window.

Frequently Asked Questions

Can you see the Milky Way from Bojonggambir?

Conditionally. From Bojonggambir the Milky Way may show as a faint suggestion under transparent, moonless conditions, but it lacks dark-site contrast.

What Bortle class is Bojonggambir?

Bojonggambir is Bortle Class 4 (SQM 20.82), a good workable sky for astronomy.

Is Bojonggambir good for stargazing?

Partly. Bojonggambir offers a good workable sky where many bright targets remain accessible, but the faintest deep-sky work is compromised.

Is Bojonggambir good for astrophotography?

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

What can you observe from Bojonggambir?

Primary targets from Bojonggambir include bright galaxies, emission nebulae, open clusters, globular clusters, Milky Way under good conditions. Targets such as very low surface-brightness objects, ambitious Milky Way photography under mediocre transparency are not realistic from this sky.

Where are darker skies near Bojonggambir?

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

When is the sky darkest in Bojonggambir?

The sky over Bojonggambir is darkest around June, July.

Is light pollution in Bojonggambir getting better or worse?

The long-term trend for Bojonggambir is gradually worsening, with the sky brightening by about 0.05 SQM per year.

• Maroko, West Java

  Direction

  SW

  Distance (km)

  15.3

  SQM

  21.55

  Bortle

  3

• Tasikmalaya, West Java

  Direction

  SE

  Distance (km)

  27.3

  SQM

  21.30

  Bortle

  3

• Padahurip, West Java

  Direction

  NNW

  Distance (km)

  13.8

  SQM

  21.07

  Bortle

  4