Jon Greif, Author at Sky & Telescope

Nebula & Galaxy

Pelican Nebula (IC 5070)

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By: Jon Greif July 8, 2020

Sun & Moon

Lucky Imaging of a Waxing Crescent Moon

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By: Jon Greif June 29, 2020

Nebula & Galaxy

NGC 7000 - The North America Nebula

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By: Jon Greif June 22, 2020

Miscellaneous Scenes & Skies

Beautiful Clear Night over Julian California

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By: Jon Greif June 20, 2020

Nebula & Galaxy

The M101 Galaxy Group

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By: Jon Greif June 16, 2020

Sun & Moon

Strawberry Moon

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By: Jon Greif June 5, 2020

Planets

Conjunction of Venus and Mercury

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By: Jon Greif May 22, 2020

Planets

Blue Venus, a Waning Crescent

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By: Jon Greif May 2, 2020

Nebula & Galaxy

M51 and Companion

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By: Jon Greif April 25, 2020

Stars & Star Clusters

M 45 - The Pleiades

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By: Jon Greif April 17, 2020

Meteors and Comets and Asteroids

Because every Plague Needs a Comet: C/2019 Y4 (ATLAS)

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By: Jon Greif March 22, 2020

Astronomy Pictures: Sky & Telescope's Online Gallery

The Crab Nebula in Hubble Palette

By: Jon Greif February 17, 2020

Astronomy Pictures: Sky & Telescope's Online Gallery

"Snow Moon" - First Supermoon of the Decade

By: Jon Greif February 12, 2020

Sun & Moon

The first full moon of 2020, known as the Wolf Moon, dipped through the outer edge of Earth's shadow creating a lunar eclipse for observers in the Eastern Hemisphere overnight on Friday and Saturday (Jan. 10-11) and skywatchers across Europe, Asia and Africa soaked in the view. Those of us…

By: Jon Greif January 13, 2020