The book has no illustrations or index. It may have numerous typos or missing text. However, purchasers can download a free scanned copy of the original rare book from the publisher's website (GeneralBooksClub.com). You can also preview excerpts of the book there. Purchasers are also entitled to a free trial membership in the General Books Club where they can select from more than a million books without charge. Title: The Restoration of Hst Images and Spectra: Proceedings of a Workshop Held at the Space Telescope Science Institute, Baltimore, Maryland, 20-21 August 1990; Original Publisher: Baltimore, MD: Space Telescope Science Institute; Publication date: 1991; Subjects: Imaging systems in astronomy; Aberration; Image processing; Hubble Space Telescope; Optical images;