WORLDWIDE TELESCOPE

The WorldWide Telescope (WWT) is a computer program created by Microsoft which allows its users to view outer space. It was announced at the TED Conference in Monterey, California in February, 2008. Users are able to pan around outer space and zoom as far into any one area as the data will allow. Images are taken from the Hubble Space Telescope and approximately ten earth-bound telescopes. It is possible to view the sky in many wavelengths of light. The software utilizes Microsoft's Visual Experience Engine technologies to function.

Modes

WorldWide Telescope has four categories of objects to look at. These are Sky, Earth, Planets, and Panoramas.

Sky

Sky mode is the main feature of the software. It allows users to view high quality images of outer space with images from the dozens of space and Earth bound telescopes. Each image is placed in the exact same position that it would be expected to be found in the sky. There are over 50 full-sky images in bands ranging from radio to gamma. There are also thousands of individual study images of various astronomical objects from space telescopes such as the Hubble Space Telescope, the Spitzer Space Telescope in infrared, the Chandra X-ray Observatory, COBE, WMAP, ROSAT, IRAS, GALEX as well as many other space and ground based telescopes.

Earth

Earth mode allows users to view a 3D model of the Earth, similar to NASA World Wind, Microsoft Virtual Earth and Google Earth. It is not powered by Virtual Earth, but it does use its satellite and map images. It also uses two other free images from NASA. They are Aerial, Hybrid, Streets, NASA Blue Marble and Earth at Night. NASA Blue Marble and Earth at Night are both a view of the Earth with a resolution to 100,000 feet above sea level.

Planets

Planets mode currently allows users to view 3D models of eight celestial bodies: Venus, Mars, Jupiter, four of Jupiter's larger moons, and our own planet's Moon. It also allows users to view a Mandelbrot set.

Panoramas

The Panorama mode allows users to view panoramas such as several Mars Rover panoramas include as well as other gigapixel panoramas such as the ones available for HDView.

Local User Content

Any of the viewing modes allow the user to browse and load equirectangular images to be viewed as planet surfaces, sky images or panoramas. Images with AVM or Astronomy Visualization Mata data can be loaded and registered to their location in the sky. Images without AVM can be loaded but they user must align the images in the sky by moving, scaling and rotating the images until star patterns align. Once the images are aligned they can be saved to collections for later viewing and sharing.

Solar System

The major solar system objects from the Sun to Pluto, and Jupiter's moons are all positioned with their correct scale, position and phase (in the case of the Earth's moon). The user can move forward and backward in time at various rates, or type in a time and date to view the position of the planets. Combined with the ability to select the users viewing location, the program can give the user a view of the sky the way it would look from any place on earth from 1AD to 4000AD. Using that tool a user can watch a eclipse, occultation, or astronomical alignment and preview where the best spot might be to observe it.

Use for Amateur Astronomy

The program allows for the selection of a telescope and camera and can preview the field of view against the sky. Using ASCOM the user can connect a computer controlled scope, or a astronomical pointing device such as Meade's MySky, and then either control or follow the scope or pointing device. The large selection of catalog objects and 1 arc second per pixel imagery allow a astrophotographer to select and plan a photograph and even find a suitable guide star using the multi-chip FOV indicator.

Tours

WorldWide Telescope contains a multimedia authoring environment that allows users or educators to create tours with a simple slide based paradigm. The slides can have a begin and end camera position allowing for easy Ken Burns style camera moves. Pictures, objects and text can be added to the slides, and tours can have both background music and voice-overs with separate volume control. One of the tours featured was made by a six year old boy, while other tours are made by famous astrophysicists such as Dr. Alyssa Goodman of the Harvard/Smithsonian Center for Astrophysics and Dr. Robert L. Hurt of Caltech/JPL.

Communities

Communities are a way of allowing organizations and communities to add their own images, tours, catalogs and research materials to the WorldWide Telescope interface. The concept is similar to subscribing to a RSS feed except the contents are astronomical metadata.

Virtual Observatory

The WorldWide Telescope was designed to be the embodiment of a rich Virtual Observatory Client envisioned by Turing Award winner Jim Gray and JHU Astrophysicist and Co-Principal Investigator for the US National Virtual Observatory, Alex Szalay in their paper titled "The WorldWide Telescope". The WorldWide Telescope program makes use of IVOA standards for interoperating with data providers to provide its image, search and catalog data. Rather than concentrate all data into one database, the WorldWide Telescope sources its data from all over the web and can available content grows are more VO compliant data sources are placed on the web.

My Reviews

I personaly like this application because the 3D graphic is very good. This application is good for expert or amateur. Of course good for study. The other good stuff from this sofware is the price. The price of WorldWide Telescope is $0.00 or "FREE". But, behind the good stuff, there must be some minus point. This software sometimes hard for some old computer because it needs little bit higher performance or normal performance computer. Other else, to open this application, you need waiting a little bit longer. For tips, read the text instruction carefully, if don't you will hard to operate this application. If you don't know, use help.