FIRST
(Faint Images of the Radio Sky at Twenty-centimeters)
A project designed to produce the radio equivalent of the Palomar Observatory
Sky Survey over 10,000 square degrees of the North Galactic Cap.
NVSS
(NRAO VLA Sky Survey)
This sky survey covering the sky north of -40 deg declination (82% of the
celestial sphere) includes 2326 continuum map ``cubes,'' each covering
4 deg X 4 deg and a catalog of discrete sources on these images (about
2 million sources in the entire survey). The source catalog can be browsed
online. The data
products are available for
anonymous ftp.
W3Browse provides access to the catalogs and astronomical archives
of the High Energy Astrophysics Science Archive Research Center (HEASARC).
Catalogs include data from all astronomical regimes, but the emphasis of
the archive is data from high energy astrophysics satellites.
A Java web sky browser which simulates "a naked-eye view of the sky
from any location on Earth, at any time of day or night, on any date
from 1600 to 2400. "
This site by Piero Massimino in Italy produces simple maps, using the
SAO catalog, for any specific time and place, labelling bright stars with
their names and positioning the visual planets.
A Postscript sky map is returned for a specific time and place with
stars down to 5th or 6t magnitude, constellations, and moon and planet
information.
On-the-fly (somewhat slowly) generated starmaps at a specific time relative
to the present from many locations around the world using a web-enabled version of
the MyStars! shareware sky mapping
program.
This U.S. Naval Observatory site explains several time systems
of which astronomers should be aware. There is another good explanation
with some examples of how the various systems are used in the
Chandra Data Archive. The USNO also has
tables of time differences.
Links to as many observatory schedules as I could find. Many of them are from
the AstroWeb observatory schedule listing, but I tracked down a few myself and
included SAO's schedules which are restricted to Center for Astrophysics staff only.
This annual campaign studies the Leonid meteor shower from as many
viewpoints as possible. The website is a good source of information for
anyone interested in observing the Leonid meteor shower as well as for
data about what meteors are made of and how they work.
The MPC is responsible for the efficient collection, (computation,) checking
and dissemination of astrometric observations and orbits for minor planets
and comets, via the
Minor Planet Circulars
(issued monthly) and the
Minor Planet Electronic Circulars
(issued as necessary).
The Planetary Data System (PDS) archives and distributes digital data
from past and present NASA planetary missions, astronomical observations,
and laboratory measurements.
News and information relevant to the impending perihelion approach
of Chiron. The files have, for the most part, been contributed by active
observers for use by their colleagues.
Additional information on Chiron
Information about the triple ring plane crossings in 1995 and 1996
which provide astronomers with a unique opportunity to observe Saturn's
rings and moons.
The Astrophysics Data Facility (ADF), located at the NASA Goddard Space
Flight Center ( GSFC), is responsible for designing, developing, and
operating data systems that support the processing, management, archiving,
and distribution of NASA mission data.
APS Automatic
Plate Scanner Group, University of Minnesota
The ESIS project, located at ESRIN,
Frascati, Italy is a service to the Astronomical and Space Physics
communities to provide access to data of all kinds, including images
and spectra from a number of space missions and bibliographic references
from all the major Astronomical and Space Physics journals.
HEASARC (High Energy Astrophysics Science Archive Research Center)
IRSKY
-- An observation planning tool, allows display of IRAS images, overlay of
catalogs on the images, and information on the ISO satellite, all useful
in planning ISO observations.
XCATSCAN
-- A catalog scanning tool, provides interactive queries of the
IRAS databases, as well as many other major astronomical catalogs.
NED
-- NASA/IPAC Extragalactic Database, a directory/access
system for literature on extragalactic objects.
This archive of the ROSAT extreme-ultraviolet (EUV) all-sky survey,
located in the Dept. of Physics and Astronomy at the University of Leicester,
provides access to data from the all-sky survey made with the Wide Field Camera.
This catalog contains arcsecond positions and count rates of detected
sources from nearly 3000 public ROSAT HRI observations, including more
than 7500 firm sources (signal-to-noise ratio > 4).
NASA's NSSDC maintains and distributes documentation, indexes
and catalogs about the data in its archives, and similar information
about important space mission datasets maintained by other institutions.
CDROM's can be
ordered over the Internet.
A table of so-called Potentially Hazardous Asteroids (PHAs) gives,
for the next 100 years, the times and close approach distances along
with their associated uncertainties, the minimum possible close approach
distances and Earth impact probabilities.
Risks are tabulated here.
"The goal of the project is to build and operate a dedicated telescope
suitable for wide-angle surveys of the sky which will address critical issues
in extragalactic astronomy, especially in the field of large-scale structure."
Data from the Hubble Space Telescope.
Check out their
What's New page
for new results. Check out data and results of studying the
Hubble Deep Field.
CDS
(Centre de Donne'es astronomiques de Strasbourg)
The CDS is a data center dedicated to the collection and worldwide
distribution of astronomical data. It is located at the Observatoire
de Strasbourg, France.
The CDS hosts the
SIMBAD astronomical database, the world reference database for the
identification of astronomical objects and which has a Hypertext version
of the SIMBAD
User's Guide .
It includes a new feature allowing to select astronomical catalogues
by keyword or author's name, among the library of more than 600 catalogues
currently available (for a total of about 3 Gigabytes of observational
data), and to actually retrieve the corresponding files.
The Star*s Family
of products, including the databases
This US Geological Survey site returns latitude and longitudes of places
in the U.S. There used to be a
telnet site at the University of Michigan
which did this for the whole world, but it seems to be defunct.
This list of astronomy meetings is compiled
by Liz Bryson of the
Canada-France-Hawaii Telescope. This version of the meeting list has
been updated to
provide links to those meetings which are providing information
electronically. If you find this list useful please send e-mail to
bryson@cfht.hawaii.edu.
