Showing posts with label EPOD. Show all posts
Showing posts with label EPOD. Show all posts

Saturday, November 24, 2012

Earthviews: Ohio Lunar Halo, from September

John Chumack, East Dayton, Ohio, September 30, 2012 [USRA].
Among the great pile of neglected posts set aside as we busied ourselves with a project requiring all our attention in recent weeks was an Earth Science Picture of the Day (EPOD) capturing the glory of our large natural satellite two days after September's Harvest Moon in the skies southeast of East Dayton, Ohio. 

The original (linked to the thumbnail at left) carries either the dusk's or the cities city's sodium vapor street lights, a combination of factors adding red to the thin, relatively high-altitude ice crystals along a southeast line of sight.

We reproduced the image here, cropped and in black and white, in hope of illustrating the wispy contacts and secondary refractions more easily seen by naked eye.

Photographer John Chumack wrote, "Because Mother Nature is sometimes surprising, I always go out at look at the night sky before I go to bed, even if the forecast calls for cloudy skies."

Friday, October 7, 2011

USRA EPOD: "Paper Moon"

From Lunar Pioneer 7
A Gibbous 'Paper Moon,' Earth Science Picture of the Day, October 7, 2011, projected through the lens of an 80 cm (31.5 in), f/8 telescope onto a piece of tissue paper, instead of using an eyepiece. This interesting projection allows many observers, rather than just a single viewer, to see the image coming out of the telescope. It also nicely demonstrates the real field of view of a telescope, which is larger than what an eyepiece can cover. Photo taken on August 18, 2011 from Casa del Romano, Italy [Martin Dietzel & Mario Sämisch/EPOD/USRA].