Finding Suitable Dark Sky for Astrophotography

When scouting new locations for astrophotography, it’s essential to identify areas that exhibit critical characteristics of the perfect spot. A darker area tends to provide a better view, but how can an astrophotographer find a nearby dark area? What can an astrophotographer do when there are no dark skies around them? 

 

Finding the best dark sky to produce the best result can be complicated. Here’s how to find the perfect dark sky.  

 

Dark Skies

 

Places that are away from the city lights tend to produce better images. The darker the sky is, the better an astrophotographer’s picture may look. 

 

Casino enthusiasts might think about casino utan svensk licens when thinking about Sweden. However, astrophotographers would instantly think about the Aurora Sky Station in Abisko National Park. It’s one of the best examples of a good, dark, clear sky without clouds. 

 

An excellent dark sky allows the Milky Way to shine. The fact is that there are more stars with faint glow in the sky than those with a brighter shine. Dark skies allow these faint glows to stand out and let astrophotographers find something distinct. On the contrary, astrophotographers looking for brighter planets and stars would see them in bright urban skies. 

 

Avoid Areas with Light Pollution

 

The latter is due to light pollution. Stray lights from urban areas scatter into the sky. Light pollution can come from sports complexes, parking lots, and establishments with many lights like popular casinos. The scattered light combines and manifests and glows in the dark sky. The bigger the city, the more light pollution will exist. 

 

If an astrophotographer aims to see meteors and stars, the darker the sky, the better the view. The further one distances oneself from the population center, the less light pollution that leads to skyglow. When looking for a dark sky, it’s good to go at least 20 to 30 miles from the city area. 

 

When an area exists near mountains, it might have darker skies as the mountains block light. If it’s too hard to escape the city light pollution, try finding mountains that can block the light. A body of water or a large wilderness area can also help if no hills are nearby. 

 

Use a Bortle Scale

 

Astrophotographers can use a Bortle scale, which stargazers usually use to tell how bright the sky will likely be above a given location. The scale has a numeric system from one to nine, each number indicating the level of light pollution present in the area. 

 

The lower the number, the darker the area. A Class 1 Bortle scale rating signifies an exceptionally clear sky, usually found in uninhabited areas far from light sources. Only the brightest celestial objects will be visible in highly light-polluted Class 9. 

 

Most astrophotographers and stargazers will find skies rated Class Three or Four dark enough for enjoyable viewing or essential imaging work. However, if an astrophotographer wants to produce fantastic shots of deep sky objects, a Bortle Class 2 area might be better suited. 

 

Although finding a Bortle Class two or lower areas can be tricky, the sky darkness boost can make it worthwhile. Classes five and above typically offer views of bright constellations and planets rather than the intricate details of galaxies and nebulae. 

 

Some light pollution maps and apps now feature Bortle ratings to help astrophotographers scout nearby accessible spots with the darkest sky. This allows astrophotographers to maximize the quality of their astronomical observations. 

 

Areas with a Good Dark Sky

 

As mentioned above, the further a location is from population centers, the darker the sky will be. However, some other factors can contribute to a stargazing experience. For example, areas with a higher altitude have less smoke, fog, and hazes that can mask the stars. If there’s an area nearby a couple thousand feet above the population center, it’ll provide astrophotographers with clearer skies. 

 

The Bortle scale and the impact of light pollution are based on a cumulative effect. That means an area not near a major population center can still reach desirable darkness levels. The light from a single distant highway or small town will dilute more rapidly with distance. 

 

An astrophotographer can still produce great images near access points with patience and good weather. Still, the access points must be at an appropriate distance from street lights and major urban sprawls like around MGA casinos. Catching astronomical images can remain practical without having to compromise quality. 

 

Observation Direction

 

The area of observation can contribute to the quality of the image. When choosing an astrophotography location, it’s essential to consider which direction to face. Even if light pollution surrounds most of the area, there may be significantly darker views in one direction. 

 

Several Astronomical apps can help determine what astronomical objects will be visible and the best orientation. 

 

Weather can contribute to the quality of the astro image besides a dark sky. A dark sky won’t work well when it’s full of clouds blocking the view. Checking forecasts and historical cloud coverage can save wasted trips. Microclimates due to terrain features sometimes also lead to varied conditions, even within short distances. Winds, too, could impact the quality of observations and must be accounted for.