Apps to Help Out

Loss of the Night – Android / iOS
“The Loss of the Night app turns your eyes into a light meter, allowing you to become a citizen scientist and report how bright the night sky is where you live!”

Dark Sky Meter – iOS
The Dark Sky Meter measures the artificial sky brightness in two simple steps. Just cover the camera and aim to the point right above your head.

Light Pollution Citizen Science Research Project

We’re encouraging everyone to participate in a global citizen science project to keep track of light pollution around the world and right here Jackson Hole. Download instructions for how to participate!

Globe at Night

Using the two apps listed to the left and participating in the citizens science project will allow your data to be used by Globe at Night. You can also enter data directly onto their website.

The green trace is the zenith brightness (“mag”, in TESS-Photometer magnitudes per square arcsecond). The readings we are getting on averaging of around 20 mags put Jackson into the Suburban category for sky brightness. We can do better!

The orange is the ambient air temperature in Celsius inside the TESS-Photometer (“tamb”); and the blue is the sky ‘temperature’ in Celsius (“tsky”).

tamb-tsky is a measure of how clear the sky is, and what the software uses to make a guess about whether the sky is clear or cloudy. If tamb and tsky are similar, it’s probably because there are thick clouds or overcast skies. But when the sky is clear (and cooling radiatively) there’s a big difference between tamb and tsky. It’s not perfect, but it’s a good first-order guess. If tamb < +10℃ and mag > 10, a resistive heater inside the case switches on to keep water from condensing on the window.

Understanding the Data

In the upper left-hand drop-down menu in the graph below, select stars725 for Grand Teton measurements and stars726 for Jackson measurements.

Check Out Other US Communities and Parks with Dark Sky Status