Saturday, March 22, 2008
Non-Galactic, Non-Friday Post
Actually, in a sense this is still a galactic image, just from the interior of our galaxy; a weaselly construction I may just abuse if and when good galaxy images become too scarce for a weekly submission.
All that aside, on the left is a glorious, detailed image of the Cat's Eye (NGC 6543), a gorgeous planetary nebula half a light-year across and about three thousand light-years distant. This particular image has been created from archival Hubble data and reprocessed to accentuate details. The image on the right, from Wikipedia, shows how differently the imagery can ultimately appear, depending on how, exactly the digital data is processed. It also seems to illustrate how succesfully the details were shown in the other image, though I have no reason to assume that the two images were generated from the same source data.