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Originally posted by Phage
The deep space images which appear on Sky Map and other similar programs come from the Digital Sky Survey project. This project took photographs taken from various sky surveys and scanned them into digital form. The color image is created by combining two images; one through a blue filter and one through a red filter.
The red filtered photograph of the area you're looking at comes from the Schmidt telescope and was taken on October 4, 1989. The blue filtered photo was taken on June 17, 1974. The squiggle only appears in the red filtered image. While it is possible that this is an actual object which was not there when the blue photograph was taken, it's more likely that it is a speck of dust on the photograph which was picked up by the scanner.
Originally posted by Now_Then
reply to post by jziegler
Not sure what I'm supposed to be looking for here, that orange stringy thing left of centre?
Also anything on that scale would be giHUGE!
Originally posted by Phage
it's more likely that it is a speck of dust on the photograph which was picked up by the scanner.