Be an Astronomer

Explore your night sky in your neighbourhood

Observe the moon throughout the lunar month

Take star magnitude measurements

Learn about how you can be an Astronomer 

Osmani Light Pollution Calgary

Be An Astronomer

Lunar observing

Observe the Moon

Learn all about our closest celestial neighbour, the Moon. The Moon Journal is filled with Moon facts, exploration missions, history and even a little poetry.

light pollution

Dark Skies

Learn about the beauty and value of Dark Skies. The Dark Skies journal is filled with facts about light, telescopes and information on how astronomy needs dark skies.


Observing Guide

Instructions on how to observe the moon and how to collect star magnitude data are all found in the Observing Guide. Tips on when and how to observe will help you to learn how to see the science of the dark night sky.

Light Pollution light

Astronomy and too much artificial light

Light pollution has a direct impact on the ability of astronomers to observe objects in the sky. Astronomers use telescopes as tools that collect light. A star creates its own light and that light travels across space. A telescope collects that light and allows the astronomer to learn more about the star. If there is too much artificial light around the telescope it blinds the telescope and affects the telescope's ability to collect the light from the distant star. Astronomers need dark skies to research the light from distant celestial objects.

Light Pollution Measurements

Be an Astronomer and Protect Dark Skies

You can take star magnitude measurements in your community. We are collecting data on the amount of light pollution in the skies of Alberta. Follow our guide on how you can take your light measurements, submit them to our online form and we will develop a clear picture of where and how artificial light is affecting the skies in your community.

RAO Citizen Science Data Input