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Originally posted by Paroxysm
There was an anomaly that appeared on STEREO-B satellite images 2 weeks ago on the 5th and 6th of October.
stereo-ssc.nascom.nasa.gov...
stereo-ssc.nascom.nasa.gov...
This anomaly in the image may just be dirt or junk on the lens, but I can't really say one way or the other.
Remember that "Brown Dwarfs" neither reflect light like other planets in our solar system, nor do they emit their own light like our sun.
That's a data processing artifact. To make our web images look somewhat 'pretty', we
have to subtract what we call a 'background model' (similar to 'flat fielding' in
astronomy) to minimize that brightness of what we call the "F corona" (which is
essentially a huge dust cloud that centers on the Sun). Anyway, sometimes these
background models don't do a good job of ignoring planets, and so when we subtract
them from the data, they leave a 'shadow'. So that's what the dark thing is -- the
"shadow" of a planet that's in our background model.
By way of proof, you might want to direct folks to the original ("raw") spacecraft
image, prior to us doing any of our processing on it. To get that particular file,
go to this location:
1. stereo-ssc.nascom.nasa.gov...
and right-click and save/download the file 20090926_212901_s4h1B.fts -- don't try and
view it in the web browser.
Note that this is a "FITS" file -- a scientific data format we use for our images.
You can not view these files like you do jpegs, gifs, etc. You need to have some
kind of software that reads them. Photoshop and Gimp both do, but we prefer an app
called DS9 (hea-www.harvard.edu...)
Anyway, that will show you what the images look like taken directly from the
spacecraft, before we do anything to make them "pretty".
Looks like we have Venus in (or near) the left-hand edge of the HI1-B field of view
on that date. That's what's causing the odd-looking "loop". I think that's Mercury nearer the center of the image. The other brighter objects would be stars.
Best wishes
Karl
Originally posted by SpaceMonkeys
Doesnt it occur to you guys that this is more likely footage of light anomalies or neighbouring planets? It seems like another one of "those" threads which are devaluing this site.
Originally posted by John Matrix
Most of the Vid/Pictures can be explained by optics, flares and normal planetary orbits etc...
However I find a link after playing the last video in your OP interesting here:
Originally posted by Pauligirl
Originally posted by John Matrix
Most of the Vid/Pictures can be explained by optics, flares and normal planetary orbits etc...
However I find a link after playing the last video in your OP interesting here:
It looks like this video you posted hasn't received much attention here.
I would like to hear the lens flare crowd comment on it.
Have you played with google sky? There's a lot of really strange looking things on it.
Originally posted by Psychonaughty
Ever wonder what this existence of ours truely is?