Duplicate Image at Moonset

By Peter D Geldart

Observations were made over a great lake with a clear view to the horizon of moonsets that displayed a duplicate image below. This is known as an Etruscan Vase or an Omega effect because of the shape. Three causes of the inferior image are considered: refraction, reflection, or gravitation.
"Since the phenomenon is only seen from a low vantage point looking over a level surface to a clear horizon it underscores the importance of the observer's position."

• Format: Paperback
• Language: English
• ISBN: B0G5YN1T77
• ISBN13: 9798278014195
• Release Date: January 2026
• Publisher: Independently Published
• Length: 32 Pages
• Weight: 0.09 lbs.
• Dimensions: 0.1" x 5.0" x 8.0"