Jon Greif

Meteor, Comet & Asteroid

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

Post Content

By: Jon Greif March 22, 2020

Nebula & Galaxy

The Crab Nebula in Hubble Palette

By: Jon Greif February 17, 2020

Sun & Moon

"Snow Moon" - First Supermoon of the Decade

By: Jon Greif February 12, 2020

Sun & Moon

Lunar Wolf

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

Nebula & Galaxy

The Pacman Nebula in Narrowband

By: Jon Greif January 2, 2020

Meteor, Comet & Asteroid

Nearing Earth for Comet C/2017 T2 (PANSTARRS)

By: Jon Greif January 2, 2020

Planets

This month's planetary transit of the sun.

By: Jon Greif December 2, 2019

Conjunctions

Conjunction of Venus and Jupiter over San Francisco Bay

By: Jon Greif November 26, 2019

Nebula & Galaxy

NGC 6946 - The Fireworks Galaxy

By: Jon Greif September 12, 2019

Stars & Star Clusters

Another view of Messier 13

By: Jon Greif September 4, 2019

Skyscapes & Constellations

The Milky Way in Late August

By: Jon Greif September 4, 2019

Nebula & Galaxy

Another View of the Dumbbell Nebula (Messier 27)

By: Jon Greif September 4, 2019

Stars & Star Clusters

Another View of the Great Hercules Star Cluster (M13)

By: Jon Greif September 4, 2019

Nebula & Galaxy

Cygnus Loop with Western Veil and Pickering's Triangle

By: Jon Greif August 12, 2019

Stars & Star Clusters

NGC 6121 (M4)

By: Jon Greif July 31, 2019

Sun & Moon

Waxing Gibbous Moon on 50th Anniversary of Moon Landing

By: Jon Greif July 16, 2019

Planets

At Opposition

By: Jon Greif July 16, 2019

Nebula & Galaxy

NGC 6822 "Barnard's Galaxy"

By: Jon Greif July 8, 2019

Nebula & Galaxy

NGC 1698

By: Jon Greif July 4, 2019

Planets

Moons of Jupiter (Annotated)

By: Jon Greif July 3, 2019