Search found 4 matches

by bbonomi
Mon Sep 10, 2012 12:53 pm
Forum: Starship Asterisk: Handbook
Topic: APOD assessment poll #8
Replies: 129
Views: 72113

Re: APOD assessment poll #8

Don't remember - either link from a friend or more likely in a news item online. But I continue to send links to those I know all the time.
by bbonomi
Mon Jun 06, 2011 1:03 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Geometers Playground Over Wyoming (2011 Jun 06)
Replies: 65
Views: 42675

Re: APOD: Geometers Playground Over Wyoming (2011 Jun 06)

Well, the star trails point in multiple directions inconsistent with using a fish-eye lens (especially noticeable at the top center and again directly above the monument); there are errant or missing shadows (mentioned frequently), and the horizon perspective also seems to indicate that the focal po...
by bbonomi
Sun Mar 27, 2011 11:42 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Valles Marineris: The Grand Canyon... (2011 Mar 27)
Replies: 64
Views: 7798

Re: APOD: Valles Marineris: The Grand Canyon... (2011 Mar 27

Instead of comparing it to surface features, why not look to the Mariana Trench in the Pacific? More comparable in size; possibly in origin. We think about plate tectonics here so maybe Valles Marineris is the edge of a tectonic plate that existed when Mars still had a molten core -- it wouldn't be ...
by bbonomi
Thu Feb 28, 2008 3:03 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Object in ISS: Sunlight to Shadow (28 Feb 2008) BSoD
Replies: 6
Views: 1840

Object in ISS: Sunlight to Shadow (28 Feb 2008) BSoD

In addition to the aircraft in this picture, there is another object moving in the sky - starts in lower middle and moves down off the bottom of the clip. Doesn't look like a plane?