Today's Image

The Double Cluster in Perseus

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December 5, 2018

The Double Cluster in Perseus, via Tom Wildoner at The Dark Side Observatory in Weatherly, Pennsylvania.

Tom Wildoner wrote:

Here is a view of the famous double cluster in the constellation Perseus (between Perseus and Cassiopeia). They are also designated NGC 869 and NGC 884. Check out the red supergiants in this view!

Tech Specs: Sky-Watcher Esprit 120mm ED Triplet APO Refractor, Celestron CGEM-DX mount, Canon 6D stock camera, ISO 3200, 20 x 60 second exposures with dark/bias frames, guided using a ZWO ASI290MC and Orion 60mm guide scope. Image date: October 1, 2018. Location: The Dark Side Observatory, Weatherly, PA, USA.

EarthSky lunar calendars are cool! They make great gifts. Order now. Going fast!

Bottom line: Photo of the Double Cluster in Perseus.

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December 5, 2018

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Today's Image

Deborah Byrd

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About the Author:

Deborah Byrd (asteroid 3505 Byrd) helps edit EarthSky.org and is a frequent host of EarthSky videos. Deborah created the EarthSky radio series in 1991 and founded EarthSky.org in 1994. Prior to that, she had worked for the University of Texas McDonald Observatory since 1976, and created and produced their Star Date radio series. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named in her honor in 1990, a Public Service Award from the National Science Board in 2003, and the Education Prize from the American Astronomical Society in 2020. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.