网站简介：Image processing and CCD camera control software for astronomical imaging. Product, company, shop, support and contact information.
网站简介：Ultra high-quality maps of the night sky for northern and southern hemispheres, and equatorial regions. Designed to be printed and used, and updated each month. Free PDF download.
网站简介：Telescope specialists, since 1785, offering a wide range of telescopes, binoculars and astronomical accessories. Located in Kent (United Kingdom).
网站简介：A collection of detailed biographies of persons in science and Christianity, including scientific institutions and inventions, 1450 to 1700. Includes portraits.
网站简介：NASA mission to advance the understanding of the three-dimensional structure of the sun's corona.a.
网站简介：Publishers and booksellers serving astronomers worldwide since 1973. On-line catalog and ordering.ng.
网站简介：Graphical short-term predictions of seeing related weather conditions at a large number of sites in North America.
网站简介：AstroNet, Crimean Observatory, Astronomical Databases, Russian Astronomical Network, The WebMuseum network.
网站简介：Online retailer of a range of astronomical telescopes, accessories and other optical equipment. European distributor of the SkyShed POD Personal Observatory Dome and Kendrick Dew Remover System. Located in Norfolk, UK.
网站简介：Interactive project that allows the user to participate in a large-scale project of galaxy research: classifying millions of galaxies found in the Sloan Digital Sky Survey.
网站简介：Personal website for Courtney Seligman, author and professor of astronomy. Includes online astronomy text (in progress), and brief discussions of novels (published and in progress) by Courtney Seligman.
网站简介：UK organization promoting astronomy, geophysics, and planetary science.
网站简介：Users guide, observer list, downloads, PC control, firmware, odds and ends, equipment reviews alignment guides, tracking test, and links.
网站简介：Located at Sacramento Peak, Sunspot, New Mexico.
网站简介：Key activities include research and observing planets, stars, celestial phenomena and the abatement of light pollution.
网站简介：An unofficial archive of NOAA solar data.
网站简介：Contains 3D maps of the universe zooming out from the nearest stars to the scale of the galaxy and out to the surrounding superclusters and finally to the scale of the known universe.
网站简介：Sells meteorites. Photos available.
网站简介：Beginner's advice and articles, and telescope, eyepiece and accessory reviews.
网站简介：People, research, education, facilities, and events.
网站简介：Offers high-performance CCD camera and imaging systems. Products include the Retiga and QICAM cameras for scientific and industrial applications, the MicroPublisher cameras for microscopy, publication and documentation applications, and cameras for OEM applications.
网站简介：Provides an interactive sky atlas allowing users to visualize digitized images of any part of the sky. Includes astronomical catalogs, personal user data files, and interactive access to related data from the Simbad database, and Vizier service.
网站简介：A resource for a University of Virginia physics course, with lecture notes.
网站简介：Research and educational institute with projects to study planets, asteroids, and comets.
网站简介：Manufacturers of hunting optics for rifles and airguns. Includes a list of retailers, product specifics and a mailing list.