Search found 3 matches

by lazy_ant
Mon Mar 19, 2012 5:56 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Sunspot Group 1429 and the Distant Sun (2012 Mar 19)
Replies: 16
Views: 4181

Re: APOD: Sunspot Group 1429 and the Distant Sun (2012 Mar 1

The sunspot group only "rotates to the right" if you are viewing it from the Northern Hemisphere. From the Southern Hemisphere, the north pole of the Sun is the one that is closer to the horizon. The Sun's south pole is pointing toward the celestial South Pole, somewhere overhead. Features...
by lazy_ant
Tue Sep 21, 2010 5:08 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Starry Night Over the Rhone (2010 Sep 21)
Replies: 41
Views: 5114

Re: APOD: Starry Night Over the Rhone (2010 Sep 21)

Um, no one seems to have pointed out that if you carry out the suggested calculation, you actually get the wrong answer! Based on the painting, the altitude of Polaris would be around 48 deg. But the latitude of Arles (the known location of the scene) is 43 deg. 40 min. N. The difference of 4 or 5 d...