... The HDF Project. ... How to obtain the data catalogs. Observing logs and ancillary information. Technical information on the data reduction pipeline. Technical information on image registration and combination. Technical information on source detection and photometry. HDF Clearinghouse -- followup observations and analysis. ... Hubble Deep Field Academy -- Educational Resource for Middle School students . Hubble Deep Field South The Space Telescope Science Institute home page . ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Product Reviews . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... Sky Events . ... Observing springtime deep-sky objects with a large telescope . ... SETI Institute, Mountain View, California . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2000 April 29 . 3D View Of Jupiter's Clouds . Credit: Galileo Project , JPL , NASA . ... This 3-dimensional visualization presents a simplified model view from between Jovian cloud decks based on imaging and spectral data recorded by the Galileo spacecraft . ... The upper cloud layer is haze a few tens of miles thick. ... About APOD | ...

... A Sharper View of a Tilted Planet . ... Wisconsin -Madison), Keck Observatory Explanation: These sharp views of tilted gas giant Uranus show dramatic details of the planet's atmosphere and ring system . The remarkable ground-based images were made using a near-infrared camera and the Keck Adaptive Optics system to reduce the blurring effects of Earth's atmosphere. ... Publications with keywords: Uranus - adaptive optics - equinox . Publications with words: Uranus - adaptive optics - equinox . ...