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Elenin Now On Stereo B!

Anonymous Coward
User ID: 1482697
09/28/2011 08:41 AM
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Re: Elenin Now On Stereo B!
I admit I don't know anything about astronomy. I've been following all these info from everyone from "it's a scam, there's nothing there" to "it's the end of the world" to the bible prophecy folks. So please don't jump down my throat for asking a question.

I've got Stelllarium, and I sit outside facing south about 10pm every night with the dog relaxing and watching the stars. I even have a cheap Tasco telescope my neighbor gave me and it's cool to look at the moon. The Pleiades came up over the EASTERN horizon around 10 last night. Around 4.5 hours after sunset.

So my question is if this Elenin thing is coming around the sun, how is it being taken for the Pleiades if the sun is about 180 degrees on the other side of the earth?

Just askin'...
 Quoting: Captain Spaulding 1543488

STEREO-B is not in the same position as earth, it trails earth in its orbit. From STEREO-B HI-2 imager's perspective, Elenin is in the same field of view as the Pleiades, as well as earth and Jupiter.

Here's a comparison image showing what STEREO-B's HI-2 imager should see from its perspective using Celestia, vs what it actually sees. The actual image is a JPG I converted from the raw fits file dated 9/21/2011 at 22:09:21 UT. The HI-2 imager's extreme wide field of view produces a "fisheye" style effect not simulated by Celestia (which I tried to compensate for somewhat), so there is distortion in the actual image, but you get the idea. The star patterns are the same in both, just the real image is "fisheyed" (which is also why the real image gets more out of focus the farther you get from the center of the image)
[link to i319.photobucket.com]
It's the Pleiades there on the far left, Elenin's position is between that and earth. It's not even visible.
 Quoting: Astromut

thanks for the fisheye explanation
I didn't realize till now

Anonymous Coward
User ID: 2679631
United States
10/19/2011 06:43 PM
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Re: Elenin Now On Stereo B!