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Is there an echo in here? I said that earlier, because it's the camera that's rotating, not the sun. A point which Soylent demonstrated with an example of the illusion of a rotating keyboard that wasn't really rotating.
Originally posted by HiramA
The rotation is an illusion.
No, those dark areas are not part of the corona, they are artifacts of the photographic apparatus which you have used for stabilization.
Originally posted by HiramA
What you should be looking at are the dark areas of the corona which VERY CLEARLY DO NOT MOVE thanks to my stabilizing them.
Pot, meet Kettle.
Originally posted by HiramA
Since there are some here who can't visualize what my rotated .gif represents
Originally posted by HiramA
reply to post by Soylent Green Is People
1- The 'object' is the pen next to your keyboard, not the plastic.
2- The sun is NOT spinning in my image. I stabilized it in order to show that even though the camera is spinning, the object and the sun are NOT. If you stabilized the keyboard, the pen would not move, but the plastic 'speck' on your lens would.
This is not complicated, people.
But thank you for proving my point for me.
Originally posted by HiramA
2- These objects have been visible since 2007, but nothing has been said publicly by NASA officials. Many available images have been deleted from the public data base, had parts hidden with black rectangles, or renamed such that they could not be found.
It can be shown that NASA did some gymnastics with their equipment in order to verify that these objects were not an anomaly caused by lens defects, interference patterns, etc. In the space of 27 hrs, the image was seen to rotate 360 degrees in regular intervals. I called NASA's representative for the Stereo project (Joseph B. Gurman) to get an explanation but my call was not returned.
rotate
Originally posted by NightFlight
reply to post by Arbitrageur
Arb, the occlusion disc is rotating, BUT, the disc is not exactly centered on the sun. This gives the illusion of counter clockwise rotation of the sun's corona. I'll agree with you - the sun LOOKS like it is rotating but it is an illusion as the satellite's equipment rotates.
Looks like NASA tried several experiments with the solar observer to see for themselves if the anomaly was indeed something real or an artifact in the equipment.
Originally posted by Soylent Green Is People
Originally posted by NightFlight
reply to post by Arbitrageur
Arb, the occlusion disc is rotating, BUT, the disc is not exactly centered on the sun. This gives the illusion of counter clockwise rotation of the sun's corona. I'll agree with you - the sun LOOKS like it is rotating but it is an illusion as the satellite's equipment rotates.
Looks like NASA tried several experiments with the solar observer to see for themselves if the anomaly was indeed something real or an artifact in the equipment.
No. As I mentioned in my post above, if you think that blobby shadowy ring surrounding the occlusion disk is the Sun, then you are mistaken. The entire sun (minus the corona) is blocked by the disk. You CAN see the corona, which is in fact spinning exactly in step with the image frame.
The Sun is much brighter than that blobby ring surrounding the occlusion disk -- hence the need for the disk.
edit on 8/19/2013 by Soylent Green Is People because: (no reason given)
Originally posted by HiramA
reply to post by NotAnAspie
Superb!
I've got images from my topic which look like they're at those locations. It would be useful to say here that some digital cameras are sensitive to UV.
I'm going to try to compare the locations of my images with those on the video and will get back to you.
Thanks very much. It's about time there was some intelligent discussion and info sharing here.
Good eye!!
There are also some permanent artifacts in the instrumental backgrounds of the COR1 telescopes. Since these artifacts are always there, in a perfect world they would be removed in the background subtraction process. However, they are sensitive to small moment-by-moment changes in the spacecraft pointing, and thus cannot be completely removed. The artifacts are demonstrated in the images below. (Only a few representative artifacts have been circled.) They are caused by small defects in the field lens of each COR1 telescope, though some have also appeared since launch due to the migration of individual dust particles onto the surface of the field lens. Although they can appear anywhere within the image, they are most visible near the edge of the occulter. These artifacts appear as bright rings with a dark center, reflecting the shape of the input aperture with the occulter in the center. Generally, only one side or edge of the ring is visible, giving the artifact a "fingernail" appearance.
While space-based coronagraphs such as LASCO avoid the sky brightness problem, they face design challenges in stray light management under the stringent size and weight requirements of space flight. Any sharp edge (such as the edge of an occulting disk or optical aperture) causes Fresnel diffraction of incoming light around the edge, which means that the smaller instruments that one would want on a satellite unavoidably leak more light than larger ones would. The LASCO C-3 coronagraph uses both an external occulter (which casts shadow on the instrument) and an internal occulter (which blocks stray light that is Fresnel-diffracted around the external occulter) to reduce this "leakage", and a complicated system of baffles to eliminate stray light scattering off the internal surfaces of the instrument itself.