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Astronomical Algorithms, Calculations & Software
Access to Different Forms of Ephemerides
Taki's 8.5 Magnitude Star Atlas
Interactive On-line Atlases
The Hipparcos and Tycho Catalogues
Professional Astronomical DataBases
ADC for Amateur Astronomers
- The ADC primarily serves the professional astronomy community. However,
amateurs can find many of the ADC's catalogs useful for their hobby.
NASA has determined that ADC services sufficiently overlap those provided by
CDS and others to allow
termination of the ADC.
The Interactive NGC
Catalog Online - This is the interactive NGC (and IC, and Messier) catalog at
SEDS, based on the famous NGC 2000.0 by R.W. Sinnott
of Sky Publishing Corp., who also created the electronic version used by this online
service (thanks to Sky Publishing for permitting
us this kind of use). Only some minor corrections have been
included in our online database. The HTML interface and its features were created by
Hartmut Frommert. Thanks to Bill Arnett for helpful hints and support, and
the admins of SEDS who provided the appropriate
hardware and software basis for this service.
NGC 2000.0 Corrections
Deep Sky Browser J2000.0
- A front end to the ever expanding database called the Deep Sky Database.
Includes lists of deep sky objects sorted by catalogues or any other way, with
maps and images as well as information for every object in the database.
What's Observable Tonight?
- This tool was designed with the small-body observer in mind. Currently, only
asteroids and comets in JPL's DASTCOM
database are identified.
Stars from Jim Kaler, Prof. of Astronomy, University of Illinois
Arabic Star Names -- Many
star names are of Arabic origin, most of which were used by other nations in
the past following almost the same Arabic nomenclature, and many of which have
survived in modern scientific astronomical atlases. Listed are some of these
Arabic star names and their meanings.
Star Names v1.1.1 (2004-10-01) from Brian Tung
Star Names
Table
of 271 commonly known star names and their definitions in the Western
tradition.
Naming
Stars - the IAU serves as the internationally recognized
authority for assigning designations to celestial bodies and
surface features on them.
Naming Stars (Not)
- If you think that a star can be named after you, and that once one is,
it's all official, think again. The whole commercial "star
registry" charade is awkward for astronomers.
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Interactive Star Atlas
Object Catalogues
Object Catalogues: Messier
Object Catalogues: Deep Sky
Object Catalogues: Named Stars
Naming Stars
Object Catalogues: Navigation Stars
Object Catalogues: Iridium Flares
DeepSky Atlas: All Sky Maps
Taki's 8.5 Magnitude Star Atlas
Web-based Planetariums
JPL's Ephemeris Generator
JPL's Solar System Simulator
DeepSky Atlas: All Sky Maps
Download Sky Charts
Kerry Shetline's Sky View Café
Planetarium
Corrected Bright Star List, 1997 Astronomical Almanac H2-H31
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Bright Star Catalog (By Constellation)
Binary Stars
Double and Multiple Stars
Journal of Double Stars
Variable Stars
Star Charts from AAVSO
Working list of naked-eye deep-sky objects
Deep Sky Catalogs (Messier, Caldwell)
The STScI 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. Object Catalogue:
Palomar Observatory Sky Survey Plates
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Heavens-Above
provides you with all the information you need to observe; satellites, Mir and the International
Space Station the Space Shuttle the dazzlingly bright flares from Iridium satellites as well
as a wealth of other spaceflight and astronomical information.
The High Altitude Satellite Observers
- Most amateur astronomers will have seen at one time or another an
artificial satellite travelling across the night sky with the naked
eye. Several dozen satellites are easily visible to the naked eye &
several hundred are bright enough to be seen in binoculars. Almost all
of these satellites are in low earth orbit (LEO), at altitudes between
100 & 1500km above the earth's surface. There are many thousands of
satellites in higher altitude orbits, but few observers actively
observe these objects often beleiving that these objects are too faint
to be easily observable with a small telescope or binoculars. However,
there are dozens of satellites in high altitude orbits ranging up to
36,000km altitude that are potential visible to observers using small
telescopes ( smaller than 6" diameter), binoculars & even the naked
eye.
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U.S. Naval Observatory -
Welcome to the web pages of the Astronomical Applications Department of the U.S. Naval
Observatory. Our products - almanacs, software, and web services - provide precise astronomical
data for practical applications, serving the defense, scientific, commercial, and civilian
communities.
Astronomy tools
Clear Sky Institute was
founded in 1993 to undertake the pioneering effort of completely automating a remote
observatory at the University of Iowa. The work was developed with NASA and NSF funding
and the results of that effort remain freely available at
here.
XEphem is an
accurate and reliable interactive astronomy software tool for all
UNIX-like systems including
Linux,
FreeBSD and
Solaris. XEphem source code and sample databases
may be downloaded at no charge.
Planetary Maps
Clickable Planetary Maps
IAU Astronomical Headlines
- This page contains brief information on recent astronomical discoveries as
reported in the
International
Astronomical Union Circulars (IAUCs) (published by the Central Bureau for Astronomical
Telegrams) and the
Minor Planet
Electronic Circulars (MPECs) (published by the
Minor Planet Center), as
well as links to ephemerides and orbital elements for comets and minor planets.
Recent IAUCs
Recent MPECs
List of Recent Supernovae
Latest Supernovae
The Aladin Sky Atlas -
is an interactive software sky atlas allowing the user to visualize digitized
images of any part of the sky, to superimpose entries from astronomical catalogs or
personal, user data files, and to interactively access related data and information
from the Simbad database and Vizier service for all known objects in the field. The
driving motivation behind Aladin is the desire to provide a visual summary of the
multi-wavelength sky. It should be particularly useful for multi-spectral
cross-identifications of astronomical sources, observation preparation and quality
control of new data sets (by comparison with standard catalogs covering the same
region of sky).
Astrophysics Data System (ADS)
- is a NASA-funded project which maintains three
bibliographic databases containing more than 5.1 million records:
Astronomy and Astrophysics, Physics, and ArXiv e-prints. The main body
of data in the ADS consists of bibliographic records, which are
searchable through our Abstract Service query forms, and full-text
scans of much of the astronomical literature which can be browsed
though our Browse interface. Integrated in its databases, the ADS
provides access and pointers to a wealth of external resources,
including electronic articles, data catalogs and archives. We currently
have links to over 5.3 million records maintained by our
collaborators.
Astrometric Catalogues Server
This server page provides access to the Tycho-2 catalogue, to the main Hipparcos and Tycho-1
catalogues and to the Tycho Reference Catalogue (TRC). The first three catalogues are based on
observations made by the ESA Hipparcos satellite, the TRC is based on the Tycho catalogue and the
Astrographic catalogue. For more information on the Hipparcos mission and the catalogues please
refer to the ESA publication SP-1200. The TRC catalogue is described in A&A, 335, L65-L68 (1998)
- July(III) 1998.
Star Catalogs (USNO)
Star Catalogs for Astrometrica
Astrometric Catalogues Server
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. European users may find
access through LEDAS at the University of Leicester
to be more efficient.
Sky View is a Virtual Observatory
on the Net generating images of any part of the sky at wavelengths in all regimes from Radio
to Gamma-Ray.
To select a region of the sky please choose one or more surveys and a target or position.
Optionally you may choose the coordinate system, projection, equinox, brightness scaling, and
coordinate grid.
Network Resources for Astronomers
The amount of data produced by large observational facilities and space missions has led to the
archiving and on-line accessibility of much of this data, available to the entire astronomical
community. This allows a much wider multi-frequency approach to astronomical research than
previously possible. Here we provide an overview of these services, and give a basic description
of their contents and possibilities for accessing them. Apart from services providing
observational data, many of those providing general information, e.g. on addresses,
bibliographies, software etc. are also described. The field is rapidly growing with improved
network technology, and our attempt to keep the report as complete and up-to-date as possible
will inevitably be outdated shortly. We will endeavor to maintain an updated version of this
document on-line. Links on note.
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SKYMAP is an astronomical mapping
program written in Fortran and C for Unix workstations by Doug Mink of the Smithsonian
Astrophysical Observatory Telescope Data Center. If you just need positions, several other
options are available. rgsc for the Guide Star Catalog and star and its variants for other
catalogs use the same Fortran and C code as skymap. The WCSTools package contains C programs
which can search the GSC, USNO, and SAO catalogs, among others.
The ESO Sky Calendar Tool* -
This tool produces a nightime calendar of phenomena for a single site. The listing includes; Sun
rise and set times, Astronomical twilights, both in civil time and LST, Moon rise and set times
and phase for each night in the month.
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Indexes of Maps of the
Planets and Satellites 1992 - Beginning with the systematic mapping of the lunar
surface more than three decades ago, over 1600 maps of the planets and satellites of the
Solar System have been produced by the U.S. Geological Survey and by divisions of the
Defense Mapping Agency. This collection of maps is a unique resource that has been
derived from images and data returned by a series of remarkably successful space
missions. Many of the maps have not been replicated or updated with data from new
missions, and thus they represent a very special legacy from the beginnings of space
exploration.
Clickable Planetary Maps
Maps of the Solar System - Welcome to the
solar system surface map database, a NASA/JPL/Caltech spyglass on the cosmos. Select
your planetary system of choice and download maps, or browse the surface features of
your favorite planet or satellite!
Digital
Geologic Maps of the Planets - All maps in this database have been
published by the United States Geological Survey under contract to the National
Aeronautics and Space Administration. These maps were originally published
between 1971 and 1998. The intent of this web site version of those maps is to
provide a planetwide summary of the geology of the best-known planets and
satellites (Mercury, Mars, and the Galilean satellites Io, Ganymede, and
Callisto) for which a comprehensive set of maps exists. Venus and Europa are
still in the process of being mapped. Although images of the outer planets and
satellites have been obtained, they are rarely at a resolution allowing detailed
geologic mapping, and therefore have not been created and published in the USGS
I-map series. The Cassini mission, now on its way to Saturn, will provide
much-improved images of Saturn's satellites.
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© Copyright 2009 - Samuel J. Wormley
by swormley1@mchsi.com
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