Pikes Peak Pebble Pups

Pikes Peak Pebble Pups

Tuesday, April 8, 2014

Earthshine and Da Vinci


The photo above shows a outstanding example of earthshine, as observed from Almada, Portugal. This sliver of the crescent Moon, looking very much like a Cheshire grin, was snapped on February 1, 2014, at 7:17 p.m. 

The phenomenon known as earthshine was described and drawn for the first time by the great Leonardo Da Vinci, nearly 500 years ago in his book Codex Leicester. Da Vinci realized that both the Earth and the Moon reflected sunlight at the same time. Light is reflected from the Earth to the Moon and back to the Earth as earthshine. 





Photo details: This is a composition of an image of the moon and an image of a page from Da Vinci's Codex. Astro Professional ED80 telescope with 57 0mm; Vixen GP2 Photo Guider S tracking mount; f/7; Canon 50D camera; ISO 400; 6 second exposure.

 Almada, Portugal Coordinates: 38.6777, -9.1570
Permission by Miguel Carlo
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Through this blog pebble pups and junior members of the Colorado Springs Mineralogical Society can access their lessons, work on assignments and projects, and receive details about field trips in the Pikes Peak Region. This Internet program is also suitable for young people who are interested in Earth science but do not live near a rock club or gem and mineral society or for young people anywhere who want a deeper dive into these topics. The only requirement is that all participants must be members of the Colorado Springs Mineralogical Society and must fill out the CSMS membership form (under important websites) and send their registration and membership fee in. Steven Veatch is the senior instructor and will need an email from you with your name, address, phone number, and permission from your parents to participate in this program.