Globe at Night asks you to help study light pollution


View at EarthSky Community Photos. | Jeremy Likness captured this picture of the constellation Orion from Monroe, Washington, on January 8, 2023. Jeremy wrote: “It’s the clearest I’ve ever resolved this constellation with a digital camera. You’ll be able to see the nice Orion Nebula, Flame Nebula, Running Man Nebula and even catch a touch of Barnard’s Loop.” Thanks, Jeremy! You’ll be able to take part within the March marketing campaign for Globe at Night by in search of Orion in your individual skies. What number of of its stars are you able to see?

Globe at Night time

From 2011 to 2021, the common enhance in brightness of the evening skies over North America and Europe was 9.6% per yr. That signifies that, for many people, the celebs are disappearing. In an effort to lift consciousness of light pollution – and to evaluate the state of our evening skies – a world citizen-science marketing campaign referred to as Globe at Night desires you to survey your sky. The undertaking runs each month round new moon, when the sky is darkest.

From March 13 to 22, 2023, Globe at Night time is asking that you just look towards the easy-to-find constellation Orion the Hunter, to find out what number of of Orion’s stars you possibly can see in your sky.

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6 simple steps to take part

There are solely six simple steps required to take part. Right here’s what Globe at Night time asks you to do:

1. Through the marketing campaign dates, go exterior greater than an hour after sunset (8-10 pm native time). The moon shouldn’t be up. Let your eyes turn out to be used to the darkish for 10 minutes earlier than your first statement.
2. Use an evening sky app in your cellphone exterior to search out the constellation [Orion for March] from the place you might be.
3. Go to the Globe at Night Report web page to begin to enter Globe at Night time measurements. Be sure you are in “Nighttime model”.
4. With a wise cellphone, the app will put within the date, time, location (latitude/longitude) routinely. In any other case please kind them in. On your location, kind the road deal with closest to your statement together with the town, state or province and nation.
5. Select the star chart that appears most carefully to what you see towards your constellation. That’s, what’s the faintest star you possibly can see within the sky and discover within the chart?
6. Selected the quantity of cloud cowl on the time of statement after which click on on the “submit knowledge” button.

That’s it! I participated in February’s marketing campaign utilizing my good cellphone. It was simple. From my entrance garden within the suburbs, I may see stars to magnitude 4. After I submitted my knowledge, I realized that I used to be the 123,090th citizen scientist to submit knowledge.

Instance of a star map for March

Every month, Globe at Night time provides the Northern and Southern Hemispheres totally different choices for which constellation to watch. For March, apart from Orion you even have the choice of Gemini within the Northern Hemisphere and Canis Major within the Southern Hemisphere. Go to this page to see what constellations they recommend for the opposite months of the yr.

7 charts from Globe at Night showing Orion with fewest stars and adding more till star-filled.
View larger. | Listed below are the choices you’ll see once you take part in Globe at Night time’s survey of the sky in March. What number of of Orion’s stars are you able to see from the place you reside? Have a look at the charts and evaluate them to your sky. A really light-polluted sky will see the fewest stars, and a really dark sky will present stars all the way down to magnitude 6 or extra. Picture by way of Globe at Night.

Backside line: Take part within the March marketing campaign for Globe at Night time by Orion and reporting what number of of its stars you possibly can see.



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