July Fourth weekend brought sky events great and small

StephensAstro —  July 6, 2020 — Leave a comment
Little difference can be seen between an earlier stage and the maximum eclipse state of the July 4 - 5, 2020 penumbral lunar eclipse. Photos by James Guilford.

Little difference can be seen between an earlier stage and the maximum eclipse state of the July 4 – 5, 2020 penumbral lunar eclipse. The images were made with identical camera and Photoshop settings. Photos by James Guilford.

There was much ballyhoo surrounding the penumbral lunar eclipse that would take place the night of July 4 – 5, 2020. We joined in just to explain a little about what was going on and what might be expected. Penumbral lunar eclipses take place when the Moon passes through the thin outer shadow Earth casts out into space; they are often very subtle, slight, and in this case, nearly undetectable. Just witness the photo above that shows the Full Buck Moon about one-half hour before maximum eclipse and the Moon at maximum. Casual observers saw no change across the entire event and it’s hard for us to see the difference even in photos that can be made to emphasize features! So we apologize if you waited up to see what we called the  “subtle” eclipse but, if you did, you saw a beautiful Full Moon!

Then there was the much-less-promoted Sunday night, July 5, conjunction of Earth’s Moon, with planets Jupiter and Saturn… a lovely sight! We went out to photograph it an hour after moonrise and spied a brilliant orange Moon lighting up the scattered clouds with Jupiter shining through and Saturn making a somewhat dimmer appearance. A conjunction is when two or more celestial objects appear close together in our skies — emphasis on appear since Moon, Jupiter, and Saturn are separated by hundreds of millions of miles. We were surprised to see, in the photo below, that even Jupiter’s four Galilean Moons can be seen. The stars and planets appear oblong or as short streaks due to Earth’s rotation and the length of the camera exposure.

Conjunction of Earth's Moon, with planets Jupiter (bright dot above), and Saturn (less bright dot to the left at the edge of a cloud), the night of July 5, 2020. Photo by James Guilford.

Conjunction of Earth’s Moon, with planets Jupiter (bright dot above), and Saturn (less bright dot to the left at the edge of a cloud), the night of July 5, 2020. Photo by James Guilford.

StephensAstro

Posts

Since spring, 2006 Director of Stephens Memorial Observatory

No Comments

Be the first to start the conversation!

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s