Many images from this site come from tax-payer funded government sites, like NASA, JPL, and the NOAA. They are reproduced here without restrictions as Public Domain property.
In many cases, the digital data provided us is in an unprocessed Raw data format. Sky Lab remasters these images, to produce pleasing color balances, contrasts, hues, and saturations that are stunning, yet faithful to the original data. At the same time, we strive to maintain the scientifc accuracy of the end result by not altering the content by adding false color, or other artificats. However, if false color is used to render non-visible spectrum data, then the descriptions will state that.
About colors used in Hubble Images