bright green and red image
Why does Skyserver show this image as two objects, one bright red and the other bright green?
This is very rare (in my experience), especially in DR8 (and it's the same in DR10). It's an #artifact (obviously), caused by at least one of the images* being misaligned. Here's the field, zoomed out (per DR10):
If SDSS images were like postage stamps, this would be a rare variety (or whatever philatelists call printing mistakes), and it'd be worth big $ ...
No doubt someone will soon tell the SDSS folk and it'll be fixed. That person could be you, if you're interested; look for the email addy of the SDSS Helpdesk ...
*the images we see are produced by combining three separate images (actually just data), one taken through the SDSS' g-band filter (mapped to B in an RGB JPEG), one through the r-band one (G), and the i (R). In this case I'd say it's the i-band filter that's misaligned.