Getting Ready for 2017 Dr. Carl J. Wenning.

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Presentation transcript:

Getting Ready for 2017 Dr. Carl J. Wenning

Waiting for Godot?

The Wait is Almost Over! Total Solar Eclipse 2017 Annular Eclipse 2023

Personal Impressions

Total Eclipse August 21, 2017

2017 Ground Track 1

2017 Ground Track 2

Annular Eclipse October 14, 2023

2023 Ground Track

Total Eclipse of April 8, 2024

2024 Ground Track

The Moon’s Shadow

Motion of Umbral Shadow

Circumstances of 2017 Eclipse Eclipse magnitude = 1.0306 Greatest duration is 2 minutes 40.2 seconds Longest duration occurs in Shawnee National Forest just south of Carbondale, IL Path of totality 115km wide (70 miles)

Cloud Predictions for S. Illinois Clear 27.9% Few 29.9% Scattered 5.7% Broken 24.9% Overcast 11.4% Be prepared to move!

Events at Greatest Eclipse Point (P1) Partial phase begins ~ 11:55 AM CDT (U1) Totality begins ~ 1:24 PM CDT (U4) Totality ends ~ 1:26 PM CDT (P4) Partial phase ends ~ 2:51 PM CDT Events occur earlier to the west and later to the east as the lunar umbra sweeps from west to east across Earth.

Things to Observe 1 Bailey beads Diamond ring Shadow bands

Things to Observe 2 Solar corona Prominences

Things to Observe 3 Venus (mag -4.0) Jupiter (mag -1.8) Mars (mag +1.8) Mercury (mag +3.3)

Things to Observe 4

Things to Observe 5 People (they tend to go “crazy”) Animals: Birds go to roost Evening insects being to chirp Cows return from the fields Light levels drop (use fixed exposure camera) Weather phenomena: Air temperature drops Clouds can begin to form in place

During Totality Consider this: Do you really want to photograph the main event? Set up a video camera on yourself and let it run during totality so you can relive the wild and crazy moments!

How do I photograph it? You will need at LEAST a 300+ mm mounted lens. (Test it out on the full moon - which is about the same size as the sun - to see what the scale of your results will be.) Charge up everything and replace batteries the night before. Use filters before and after totality, and don’t forget to remove filters during totality! Use workshop and online resources for learning and then practice, practice, practice.

Visual Safety!

Telescope Safety

Join us for our next POS! ORION AND COMPANY Saturday, March 25th 7:00 – 9:00 PM Sugar Grove Nature Center Tim Stone, speaker Orion is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous and recognizable constellations in the night sky.