This is the orientation and positions of the Eclipse crescents, per NASA.
Isn't this correct? Moon moving top right to lower left, as it obscured the sun.
Most images I've seen so far (here and elsewhere) have the crescents pointing in the opposite direction.
Confused!
Sandy
Posted by Allen Brooks on August 24, 2017 at 12:01 AM
Since I may be the one that has caused you to be confused let me weigh in again.
I agree that this is a more pleasing view for some reason, but:
1. Why would the sun be lower in the sky as the eclipse progressed?
2. The moon circles the earth left to right, not right to left. So why over time would the moon appear to move from the wrong way?
3. I'm confused as well.
Posted by Jim DeWitt on August 24, 2017 at 12:13 AM
It's boogered.
The eclipse began with the moon overlapping the sun at about a 30° angle from vertical, not the 90° angle in NASA's upper right image. The sun was in ascension throughout the eclipse in Idaho. The corona is wrong, too.
Jim, the eclipse here was exactly as shown above - I think they even took this image from the Observatory here.
Started at 1 o'clock and ended at 7 o' clock.
The eclipse progressed from top right to lower left, even as the sun was rising.
Only the earth is rotating, not the sun or the moon
S
Posted by Jim DeWitt on August 24, 2017 at 6:38 PM
Here's the start of the eclipse in central Idaho. As Annie Dillard wrote, if you gave me three grapfruit and a flashlight, even in 15 years I'd never get it all figured out.
Only the earth is rotating, not the sun or the moon
To an observer on Earth's surface this might appear to be the case, Sandy. Strictly speaking, the sun and the moon are rotating on their respective axes, although this is imperceptible over the time frame of an eclipse. The moon is also moving along its orbital path around our little blue planet.
As Annie Dillard wrote, if you gave me three grapefruit and a flashlight, even in 15 years I'd never get it all figured out.
I love this! Thanks, Jim!
Don't we all just love a dance of cosmic proportions!
--P
Posted by Allen Brooks on August 24, 2017 at 8:03 PM
As Einstein would say, "it's all relative." Our perception on earth was that the moon was moving across the disc of the sun from right to left (one o'clock to seven o'clock}. But the moon doesn't move in that direction. Jim's photo shows the beginning of the eclipse. The question is, is the next shot going to be to the right or left. Well, the sun is rising in the sky, so the next frame should be to the right. Right??
Posted by Keith Bauer on August 24, 2017 at 8:46 PM
In your picture at the top, if you start in the upper right corner and follow it down, that is the view that happened. I don't think that the orientation of the crescents is all that important as people are just making artistic representations of the event when they composite them together.
Someone on another site posted a great image of the eclipse, with all crescents "backwards" (facing the sun in the middle of the image) and said it was a single multiple time exposure. I don't see any way this could be true.
So, Keith, if the orientations are changed for aesthetic effects, and composited, they are all manipulated Photo Art, correct?
This all has raised some interesting thoughts and opinions!
Sandy
Posted by Keith Bauer on August 25, 2017 at 10:08 AM
Sandy: I just posted my in camera multiple exposure in the Landscape gallery. The orientation of each sun is correct as viewed from ground. If someone has one with all the crescents pointing in and it is an in camera, they could have rotated their camera to a different orientation during the exposure. Could have been in post processing, but I could imagine how to pull it off in camera as well.
I chose to do mine the way I did it because I liked the look. I also wanted the challenge of creating the image entirely in camera.
Discussion
9 repliesIsn't this correct? Moon moving top right to lower left, as it obscured the sun.
Most images I've seen so far (here and elsewhere) have the crescents pointing in the opposite direction.
Confused!
Sandy
I agree that this is a more pleasing view for some reason, but:
1. Why would the sun be lower in the sky as the eclipse progressed?
2. The moon circles the earth left to right, not right to left. So why over time would the moon appear to move from the wrong way?
3. I'm confused as well.
The eclipse began with the moon overlapping the sun at about a 30° angle from vertical, not the 90° angle in NASA's upper right image. The sun was in ascension throughout the eclipse in Idaho. The corona is wrong, too.
Started at 1 o'clock and ended at 7 o' clock.
The eclipse progressed from top right to lower left, even as the sun was rising.
Only the earth is rotating, not the sun or the moon
S
Don't we all just love a dance of cosmic proportions!
--P
So, Keith, if the orientations are changed for aesthetic effects, and composited, they are all manipulated Photo Art, correct?
This all has raised some interesting thoughts and opinions!
Sandy
I chose to do mine the way I did it because I liked the look. I also wanted the challenge of creating the image entirely in camera.