Daily Martian Weather Report

The Daily Martian Weather Report is produced by the Mars Global Surveyor Radio Science Team (MGS RST). When the MGS mapping sequence begins, the page will contain a daily weather report for the planet Mars based on radio occultation measurements of the temperature and pressure profiles of the Martian atmosphere. Currently, the site contains information about the MGS mission and the Radio Science Team, the radio occultation technique for study of planetary atmospheres, profiles of the atmosphere of Venus acquired during occultations of the Magellan spacecraft, and information for K-12 educators interested in e-mail communications between their classes and members of the MGS RST.

Danish Space Research Institute - Open Positions ( DSRI )

Danish Space Research Institute ( DSRI, Denmark )

Danish telescopes around the world

DANNER, Rudolf ( CalTech / MPE )

DARDY, Henry ( NRL )

Dark Matter Telescope ( DMT )

The Dark Matter Telescope is a proposed 8.4 meter, 3-degree-field, synoptic survey telescope.

Dark Matter Tutorial

This is a tutorial about Dark Matter and cosmology, written by a researcher in the field, with optional Java experiments.

Dartmouth College Physics and Astronomy

In space physics, active areas of research include theoretical studies of space plasmas, computer simulations of plasmas, studies of auroral particle acceleration and heating, investigations of the ionosphere and magnetosphere, and studies of geomagnetic storms. The observational space physics program at Dartmouth uses ground-based, rocket-launched, and satellite instrumentation to study the ionosphere and magnetosphere. Observational work in astronomy is carried out not only at the MDM Observatory, but at national and international facilities including the Hubble Space Telescope. Ongoing research includes optical, UV and X-ray studies of supernovae and supernova remnants, investigations of the interstellar medium, shock waves, and Wolf-Rayet stars, optical studies of X-ray binaries and cataclysmic variable stars. Additional work focuses on cosmology, the large-scale structure of the universe, and the end states of stellar evolution. The theoretical particle physics and cosmology group at Dartmouth conducts research into general relativity, field theory, particle physics and phase transitions in the early universe, and baryogenesis, as well as investigations of star formation and the origins of large scale structure in the universe.

Darwin ( Space IR Interferometry Mission )

Darwin is a proposal for a European infrared interferometer in space. Its first aim is to detect Earth-like planets around nearby stars, and then to search for a signature of life, ozone in an atmosphere. It could also be used as a general-purpose infrared observatory.
Darwin was proposed to the European Space Agency (ESA) for a Cornerstone Mission in its Horizon 2000 Plus plan. In October 1995, ESA decided to study such an infrared interferometer as an option for its Interferometer Cornerstone. The Darwin and
Edison teams have combined to promote the selection by ESA of this option. The Darwin advocacy team members are also members of the International Working Group on Space Interferometry , a pressure group for this type of mission. Final selection on cost, science and technology grounds will be made around 2000, for a launch in the period 2009 - 2017.

Data Reduction Expert Assistant ( DRACO )

The use of large format detectors, increased access to very large astronomical databases, and other developments in observational astronomy have led to the situation where many astronomers are overwhelmed by the reduction and analysis process. Draco is a novel approach to data reduction and analysis which works in conjunction with existing analysis systems such as STSDAS/IRAF, IDL, etc. Draco takes on much of the mechanics of the process, allowing the astronomer to spend more time understanding the physical nature of the data.

David Darling's Astrobiology Page ( Astrobiology )

Astrobiology discussions, links and books. A site with a strong emphasis on astrobiology and the search for extraterrestrial life and intelligence, reflecting author David Darling current areas of interest. In addition to a description of Darling s books, including his latest work, The Extraterrestrial Encyclopedia, the site contains hundreds of links to other sites connected with astrobiology, extrasolar planets, SETI and other topics related to alien life, FAQ s, a forum and a guestbook.

David Dunlap Observatory, University of Toronto ( DDO )

The David Dunlap Observatory is located in Richmond Hill, Canada. As part of the University of Toronto's Department of Astronomy it operates optical telescopes for research, the largest being a 1.88m telescope. DDO is also a centre for student training and public education.

DAVIDSEN, Arthur F. ( JHU )

DE BRUIJNE, Jos ( Leiden Obs. )

DE ZEEUW, P. Tim ( Leiden Obs. )

DEC gatekeeper.dec.com Archive

Deep Near Infrared Survey of the Southern Sky ( DENIS )

DENIS is a deep complete survey of the astronomical sources of the Southern Sky in 2 near-infrared bands (J at 1.25 micron & K at 2.16 micron) and one optical band (I at 0.8 micron) simultaneously, using a one meter ground-based telescope at La Silla (Chile), with limiting magnitudes 18.5, 16.5 and 14.0, respectively. The following resources are similar (same sort-key, different text):

DEep Near Infrared Survey of the Southern Sky ( DENIS - Leiden )

DENIS will be a complete deep near infrared survey of the southern sky, with the objective to provide full coverage in 2 near infrared bands (J at 1.25 micron and K at 2.2 micron) and one optical band (I at 0.8 micron), using a ground-based telescope and digital array detectors. The products of this survey will be databases of calibrated images, extended sources, and small objects. In addition catalogs of small and extended sources will be produced. We expect the survey to be completed within five years; restricted access to the databases is possible during the second half of the survey. The production of catalogs (to be distributed) will take a few additional years.

DEep Near Infrared Survey of the Southern Sky: Point Source Database ( DENIS )

DENIS is a deep astronomical survey of the Southern Sky in two near-infrared bands (J at 1.25 µ and K at 2.16 µ) and one optical band (I at 0.8 µ) simultaneously, conducted by a European consortium, using a one meter telescope (ESO, La Silla). The survey started in 1996 and is expected to be completed in 2000.
The Centre de Données Astronomiques de Strasbourg (CDS) is implementing the final point source databases and is providing access of the processed and calibrated data to the worldwide community.

Deep Sky CCD Imaging ( amateur atrophotography )

Growing gallery of galaxies, clusters and nebulae pictures (including complete Messier list) taken with Cookbook CCD camera and 8-inch telescope. CCD mosaics of large objects: North America, M31, etc. Stereogram of comet Hyakutake - see it float in space...

Deep Sky Database

The Deep Sky Database is an online resource for building customized observing lists. The database is the Saguaro Astronomy Club's database which consists of over 10,000 deep sky objects and includes valuable observing notes.

Deep Space Network - Goldstone Deep Space Station ( DSN )

The NASA Deep Space Network - or DSN - is an international network of antennas that supports interplanetary spacecraft missions and radio and radar astronomy observations for the exploration of the solar system and the universe. The network also supports some Earth-orbiting missions, including emergency support of the Shuttle Space Transportation System.

Deep Undersea Muon and Neutrino Detection ( DUMAND )

Directory tree of information about the DUMAND project, designed to serve the needs of the experimenters, as well as to make information about DUMAND progress available to the broader scientific public.


Deep-sky.Org includes deep-sky images, taken by well known astrophotographers from around the world. It features a large and complete graphical Messier object reference.

DEEPSKY 2000 ( Steve Stuma )

Defense Meteorological Satellite Program Data Archive ( DMSP )

DMSP is a two satellite constellation of near-polar orbiting, sun-synchronous satellites monitoring meteorological, oceanographic and solar-terrestrial physics environments. NGDC maintains an archive of all data recorded on DMSP satellites as relayed to NGDC by Air Force Global Weather Central. Data from March 1992 to March 1994, are considered to be experimental. After March 1994, the system should be fully operational.



DEKEL, Avishai ( Racah Institute of Physics, TheHebrew University of Jerusalem )

Professor of Physics, Head of the Racah Institute of Physics.

Delaware Valley Amateur Astronomers ( DVAA )

The Delaware Valley Amateur Astronomers (Philadelphia, Pa) is dedicated to encouraging cooperation among amateur astronomers and educating the general public in astronomy. The home page details the club's activities, and includes excerpts from the newsletter.

Delmarva Stargazers ( DMSG )

Amateur Astronomy on the Delmarva Peninsula for 7 years. Star Parties and Telescope making. Monthly meetings and club newsletter.

DELPHI experiment ( CERN )

Delta Scuti Star Network ( DSN )

The Delta Scuti Star Network for Observation and Investigation of Delta Scuti, Gamma Doradus and SX Phe Stars is a collaboration of astronomers all around the world, who observe and study short period variable stars.

Delta Scuti Star Newsletter ( DSSN )

Contains current information on the subject of Delta Scuti, Gamma Doradus and SX Phe Stars.

DEMERS, Serge ( Montréal )

Denmark Astronomical Society

The Astronomical Society in Denmark is the only Danish nationwide society for people interested in Astronomy.

DENT, William A. ( UMass )

Departamento de Física Teorica de la Universidad de Zaragoza ( DFTUZ )

Departement Atomes et Molecules en Astrophysique ( DAMAP, Observatoire de Paris )

Departement d'Astronomie Fondamentale ( DANOF )

Department of Fundamental Astronomy at Observatoire de Paris (in French).

Departement d'Astronomie Solaire ( DASOP, Observatoire de Paris )

Department of Solar Astronomy at Observatoire de Paris.

Departement d'Astrophysique Extragalactique et de Cosmologie ( DAEC )

The DAEC is the the Département d'Astrophysique Extragalactique et de Cosmologie. It is a department of the Paris Meudon observatory, located in Meudon near Paris, France.

Departement d'Astrophysique Relativiste et de Cosmologie ( DARC )

The Departement of Relativistic Astrophysics and Cosmology, is a laboratory of the French C.N.R.S. and also attached to the Paris-Meudon Observatory.

Departement d'Astrophysique Stellaire et GALactique ( DASGAL, Observatoire de Paris )

The stellar and galactic astrophysic departement (DASGAL) is one of the scientific department of the Paris-Meudon-Nançay Observatory (France). It is also the CNRS associated research unit 335.

Departement de Radioastronomie Millimetrique ( DEMIRM, Observatoire de Paris )

The Departement of Millimetric Radioastronomy (DEMIRM) is located in the Paris-Meudon Observatory and in the physics departement of the Ecole Normale Superieure (ENS).

Departement de Recherche Spatiale ( DESPA, Observatoire de Paris )

The Space Research department of Paris Observatory (DESPA) is working in the field of scientific research in plasma physics, astronomy and planetology, through the development of space instrumentation. It is also active in the field of theoretical numerical simulation, and in the field of ground-based observational astronomy through the development of advanced technology (e.g. adaptive optics).

DESERT, F.-Xavier ( LAOG, Grenoble )

Design Engineering Technology Digest

The monthly magazine features exclusive reports of innovations developed by NASA and its industry partners/contractors that can be applied to develop new/improved products and solve engineering or manufacturing problems. Authored by the engineers or scientists who did the work, the briefs span a wide array of fields, including electronics, physical sciences, materials, computer software, mechanics, machinery/automation, manufacturing/fabrication, mathematics/information sciences, and life sciences.
Most briefs offer a
Technical Support Package, which explains the technology in greater detail and provides contact points for questions or licensing discussions.
NASA Tech Briefs also contains feature articles on successful NASA spinoffs, profiles of NASA tech transfer resources, news briefs, and application stories. Regular columns describe new patents, industry products, software, and literature.

Destination Earth ( NASA )

The official Website for NASA's Earth Science Enterprise.

DEUL, Erik ( Leiden Obs. )

DEUTSCH, Eric ( Univ.Washington )

Deutsches Elektronen-Synchrotron ( DESY )

Deutsches Interferometer fuer Vielkanalphotometrie und Astrometrie ( DIVA )

DIVA is a small astronomy satellite, planned for launch in 2003. It is aimed to measure positions, proper motions and parallaxes, brightness and color of at least 30 million stars.
This amount and the high precision is unreached so far by any predecessor mission. In a sense it is a pathfinder mission for the technology of upcoming cornerstone missions in the ESA Horizon 2000+ and the NASA Origins programmes like GAIA, DARWIN, LISA, SIM etc.

Deutsches Zentrum fuer Luft und Raumfahrt ( DLR )

DLR is Germany's national aerospace center as well as the national space agency.

DFM Engineering, Inc. of All Astronomy Products and Instrumentation

DFM Engineering, Inc.: Dealer and Sales Support Specialists of All Astronomy Products and Instrumentation Including: Telescopes, Lidar Scanners, Computer Control Systems, Telescope Retrofit Control Systems, Custom Products and Optics.

Dhillon, Vik ( University of Sheffield )

Lecturer in Astrophysics at the University of Sheffield. Research interests: accretion discs, cataclysmic variables and the evolution of binary stars.


DICK, Wolfgang R. ( IfAG, Potsdam )

DICKEY, John ( U. Minn )

Digital Archive of Historical Astronomy Pictures ( DAHAP )

A collection of images from the history of astronomy, for use in research and teaching.

Digital Images of the Sky, Bonn

A collection of astronomical images taken with the instruments of the Astronomical Institutes of the University of Bonn (AIUB) by Till Credner and Sven Kohle et al.

Digital Sky Project

The Digital Sky Project: Federating the Multi-Wavelength Sky Surveys.

Digital Sky Survey ( DSS )

The Digitized Sky Survey comprises a set of all-sky photographic surveys in E, V, J, R, and N bands conducted with the Palomar and UK Schmidt telescopes. The Catalogs and Surveys Branch (CASB) is digitizing the photographic plates to support HST observing programs but also as a service to the astronomical community.
Images of any part of the sky may be extracted from the DSS, in either FITS or GIF format.

Digitized Palomar Observatory Sky ( DPOSS )

DPOSS is a program to photograph and catalog the entire Northern Sky.

Digitized Sky Survey at LEDAS

This service provides access to digitized optical Schmidt plates forming the STScI Digitized Sky Survey (DSS). The DSS is particularly useful in producing finding charts. Users are able to tailor the size of the output image (from 17" to 1°) to suit their particular needs.

DIKAIAKOS, Marios ( Univ.Washington )


The Astronet DIRA2 database holds more than 270 astronomical catalogues. The user can select catalogue data an receive output in text or FITS-table format. The Dira2 sofware, that can be used to manage personal database and display data, is available for more platforms. The server is located in Italy at CNR Istituto di Radioastronomia.

DIRECT Project ( Determining the distances to nearby galaxies )

We undertook a long term project, DIRECT, to obtain the direct distances to two important galaxies in the cosmological distance ladder -- M31 and M33, using detached eclipsing binaries (DEBs) and Cepheids.

Discovering Infrared - The Herschel Experiment ( SIRTF Education and Outreach )

This easy, low-cost experiment will allow students to discover infrared for themselves. It is ideal for a the classroom and for science fairs. This is a version of the original experiment in which William Herschel discovered that there are forms of light beyond what we can see with our eyes.

dishfits ( single-dish FITS discussions )

This Email exploder is for discussions of the use of FITS for single-dish radio astronomy. The traffic is archived at http://fits.cv.nrao.edu/fits/traffic/dishfits/.

Disks, Planetesimals and Planets

Conference on Disks, Planetesimals and Planets, Puerto de la Cruz, Tenerife, SPAIN, 24-28 January 2000.
The recent discoveries of extrasolar planets and the progress in studies of disks around pre-main sequence and main sequence stars highlight the need of better understanding the formation and evolution of planetary systems. Many groups and observatories are dedicating important efforts towards these goals. The 1998 international time of the Canary Islands Observatories is fully devoted to studies related to these topics, making use of spectroscopic, polarimetric and photometric techniques in the optical, as well as near-IR photometry. The conference is the frame where the large amount of data collected with the facilities in the Canary Islands will be presented. In addition, contributions from participants addressing theoretical models and observations in all wavelength ranges will provide an updated overview of the field. The conference will last five days (including a free afternoon) and will consist of sessions with invited and contributed talks and poster. Sessions will devoted to: (a) PMS objects: circumstellar (protoplanetary) disks around protostellar objects, PMS stars and Vega-type stars (b) Planetesimals in PMS and MS stellar systems (c) Planets around stars (d) Searches for planets (e) Impact on planetary system studies of future space and ground-based facilities

Dominion Astrophysical Observatory ( DAO )

The DAO is operated by the National Research Council of Canada (NRC) through its Herzberg Institute of Astrophysics (HIA) as a national centre for astronomical research within Canada, with emphasis on UV, optical and IR astronomy. The Canadian Astronomy Data Centre (CADC) is a group within the DAO which is responsible for the Canadian archive of data from the Hubble Space Telescope as well the archive of data from the Canada France Hawaii Telescope. DAO's Facilty Manual is now online.

Dominion Radio Astrophysical Observatory [English] ( DRAO )

DRAO is a national facility operated by the Herzberg Institute of Astrophysics of the National Research Council of Canada. The synthesis telescope is particularly suited to comprehensive studies of the interstellar medium, extended Galactic nebulae and star-forming regions, and of nearby galaxies. The other instruments are a 26-m paraboloid and a solar flux monitoring system. Observing proposals are welcome from all interested astronomers.

DRAKE, Andrew ( Mount Stromlo Observatory )

DRAVINS, Dainis ( Lund Observatory, Sweden )

High-speed astrophysics Stellar surface structure

Drawings of comets

A site which contains about 20 interesting drawings of various comets. All supplied with observational data such as field of wiew, magnification used, etc. All text is unfortunately in norwegian only.

DUBOIS, Pascal ( CDS )

Dunsink Observatory Homepage

The Dunsink Observatory homepage provides useful links to other astronomical and academic institutions, software, search engines and other links of local interest.

DURAND, Daniel ( CADC )

Durham RAL HEP Databases ( HEPDATA )

DURIC, Nebojsa ( UNM )

DURISEN, Richard H. ( Indiana Univ. )

Dutch Meteor Society ( DMS )

The Dutch Meteor Society (DMS) is an amateur group of young people interested in all aspects regarding meteors and related matters. They observe meteors visually, photographically, video and with all-sky cameras.
DMS publishes a bi-monthly magazine called

Dynamics of Astrophysical Discs

A six-month research programme (08 Jan - 03 Jul 98) at the Isaac Newton Institute for Mathematical Sciences, Cambridge, UK. The programme brought together experts from relevant areas in astrophysics and mathematicians and scientists familiar with appropriate analytic methods and numerical simulation techniques, including the solution of differential or integro-differential equations.