Here's the link for a lunation "movie", etc. Antonio also has a bunch of other animations at his site. http://www.astrosurf.com/cidadao/animations.htm
That animation sure does bring out the libration, doesn't it! With a network of imagers, all choppiness could be removed from these types of animations. Thanks, Dale! C. --- Dale Hooper <Dale.Hooper@sdl.usu.edu> wrote:
Here's the link for a lunation "movie", etc. Antonio also has a bunch of other animations at his site.
http://www.astrosurf.com/cidadao/animations.htm
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Patrick Your wrote: Also does a nice job of showing apogee and perigee. If I am not mistaken the animation portrayed the moon at perigee when the sun was on the opposite side or when the face of the moon was dark, and at apogee when the sun was behind the earth and the face of the mood was fully lighted up. I am lacking some understanding here. I would have thought that the moon would have been pulled into perigee with the sun behind the earth and the moon face lit up. What am I missing. Jim Gibson --------------------------------- Do you Yahoo!? Yahoo! Tax Center - forms, calculators, tips, and more
Jim, apogee and perigee have nothing to do with the sun/earth configuration. The moon's orbit precesses, that is, apogee and perigee progressively move around the entire orbit. C. --- Jim Gibson <xajax99@yahoo.com> wrote:
Patrick Your wrote: Also does a nice job of showing apogee and perigee. If I am not mistaken the animation portrayed the moon at perigee when the sun was on the opposite side or when the face of the moon was dark, and at apogee when the sun was behind the earth and the face of the mood was fully lighted up. I am lacking some understanding here. I would have thought that the moon would have been pulled into perigee with the sun behind the earth and the moon face lit up. What am I missing. Jim Gibson
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Chuck OK. Thanks. So the animation was just the same series of pictures played over and over again. Had the pictures been taken at some other time in the moon's orbit it may have coincided with opposition and apogee, but there is no cause and affect on the moon's established orbit, is that it? Thanks. Jim Chuck Hards <chuckhards@yahoo.com> wrote: Jim, apogee and perigee have nothing to do with the sun/earth configuration. The moon's orbit precesses, that is, apogee and perigee progressively move around the entire orbit. C. --- Jim Gibson wrote:
Patrick Your wrote: Also does a nice job of showing apogee and perigee. If I am not mistaken the animation portrayed the moon at perigee when the sun was on the opposite side or when the face of the moon was dark, and at apogee when the sun was behind the earth and the face of the mood was fully lighted up. I am lacking some understanding here. I would have thought that the moon would have been pulled into perigee with the sun behind the earth and the moon face lit up. What am I missing. Jim Gibson
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Yeah, pretty much. The sun/earth/moon configuration does, however, affect the tides, as you know. My idea to image a complete lunation would eliminate the choppiness of this animation. A single imager has to take a break during daylight, whereas if a new imager takes over when the moon sets for the prior imager, or is lost to morning twilight, a higher frame rate is possible without the daylight gaps. Should make for a much smoother animation. This is what I meant by "perpetual night". C. --- Jim Gibson <xajax99@yahoo.com> wrote:
Chuck OK. Thanks. So the animation was just the same series of pictures played over and over again. Had the pictures been taken at some other time in the moon's orbit it may have coincided with opposition and apogee, but there is no cause and affect on the moon's established orbit, is that it? Thanks. Jim Chuck Hards <chuckhards@yahoo.com> wrote: Jim, apogee and perigee have nothing to do with the sun/earth configuration. The moon's orbit precesses, that is, apogee and perigee progressively move around the entire orbit.
C. --- Jim Gibson wrote:
Patrick Your wrote: Also does a nice job of showing apogee and perigee. If I am not mistaken the animation portrayed the moon at perigee when the sun was on the opposite side or when the face of the moon was dark, and at apogee when the sun was behind the earth and the face of the mood was fully lighted up. I am lacking some understanding here. I would have thought that the moon would have been pulled into perigee with the sun behind the earth and the moon face lit up. What am I missing. Jim Gibson
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Dale Grate site. I love watching it. The lunar liberation is fun to watch; something I hear about but don't usually notice. Jim Dale Hooper <Dale.Hooper@sdl.usu.edu> wrote:Here's the link for a lunation "movie", etc. Antonio also has a bunch of other animations at his site. http://www.astrosurf.com/cidadao/animations.htm _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy --------------------------------- Do you Yahoo!? Yahoo! Tax Center - forms, calculators, tips, and more
participants (4)
-
Chuck Hards -
Dale Hooper -
Jim Gibson -
Patrick Wiggins