Featured Research

from universities, journals, and other organizations

NASA's SkyView Delivers The Multiwavelength Cosmos

Date:
February 9, 2009
Source:
NASA/Goddard Space Flight Center
Summary:
Some three million times a year, researchers, educators, and amateur astronomers all over the world ask NASA's SkyView virtual observatory to serve up images of some interesting corner of the cosmos. Since 1994, this digital archive has made access to and manipulation of celestial surveys its specialty. It boasts a full spectrum of data, ranging from radio to gamma-rays.

This map charts the most popular cosmic locations as measured by the number of SkyView image requests since June 2007. Brighter colors indicate more views.
Credit: NASA/SkyView/Thomas McGlynn

Some three million times a year, researchers, educators, and amateur astronomers all over the world ask NASA's SkyView virtual observatory to serve up images of some interesting corner of the cosmos. Since 1994, this digital archive has made access to and manipulation of celestial surveys its specialty. It boasts a full spectrum of data, ranging from radio to gamma-rays.

Related Articles


Many of the surveys hosted by SkyView are available through popular interactive tools like Google Sky and Microsoft's WorldWide Telescope (WWT). In fact, SkyView's most recently added survey -- the fourth data release from NASA's Galaxy Evolution Explorer satellite -- is available in WWT starting today.

SkyView visitors now generate an average of 300,000 images a month — up from 20,000 a month ten years ago. Over the same period, the average size of the requested images has quadrupled. So, in terms of pixels processed, SkyView's traffic has increased by more than 60 times.

SkyView originated as a way to help astronomers deal with the ever-increasing amount of survey data. It provides a single interface for accessing more than 36 surveys covering nearly 100 wavelength bands. Anyone can create an image without having to know the particular details of a survey's data format. Behind the scenes, SkyView handles all of the drudgery — transforming, precessing, rescaling, rotating, overlaying, and mosaicking data — so astronomers can get on with doing science.

"When we were collecting data for use in WorldWide Telescope, we found that almost every new data source required special custom code to adapt it to wide-scale visualization," says Jonathan Fay, WWT's architect at Microsoft Research in Redmond, Wash. "SkyView added support for our spherical all-sky projection, called TOAST. This was instrumental in helping us achieve our goal of making astronomy accessible to everyone."

Measuring SkyView's success is becoming more difficult. That's because users now can download and run the project's Java-based software on their own computer to directly access data. "We don't count these requests -- only those made through SkyView's website," McGlynn says.

Where are people looking? McGlynn mapped the positions of millions of SkyView requests since the project's June 2007 redesign. The result is a portrait of the sky's most popular targets. These naturally include regions of importance to professional astronomers, such as areas mapped by the Sloan Digital Sky Survey, sprawling molecular clouds in the constellations Orion and Taurus, and the locations of the Hubble Space Telescope's famous Deep Field and Ultra Deep Field images. Objects of wider appeal also appear, including the Milky Way, nearby satellite galaxies called the Magellanic Clouds, and the neighboring spiral galaxies M31 and M33.

"There remains a lot of structure whose origin is unclear," McGlynn notes. "For example, the plane of Earth's orbit, the ecliptic, shows up as an enhancement even though SkyView isn't intended for viewing solar system objects."

He speculates that people looking for asteroids and comets may be using SkyView to generate comparison images, seeing if the suspect object moves or disappears. But are they amateurs or professionals?

"At one time, I thought amateur astronomers accounted for about a third of SkyView's use," McGlynn says. "I'm less willing to guess at that now -- and what does it matter, anyway? SkyView is for everyone."


Story Source:

The above story is based on materials provided by NASA/Goddard Space Flight Center. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Goddard Space Flight Center. "NASA's SkyView Delivers The Multiwavelength Cosmos." ScienceDaily. ScienceDaily, 9 February 2009. <www.sciencedaily.com/releases/2009/02/090205142123.htm>.
NASA/Goddard Space Flight Center. (2009, February 9). NASA's SkyView Delivers The Multiwavelength Cosmos. ScienceDaily. Retrieved December 22, 2014 from www.sciencedaily.com/releases/2009/02/090205142123.htm
NASA/Goddard Space Flight Center. "NASA's SkyView Delivers The Multiwavelength Cosmos." ScienceDaily. www.sciencedaily.com/releases/2009/02/090205142123.htm (accessed December 22, 2014).

Share This


More From ScienceDaily



More Space & Time News

Monday, December 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Spokesman: 'NORAD Ready to Track Santa'

Spokesman: 'NORAD Ready to Track Santa'

AP (Dec. 19, 2014) Pentagon spokesman Rear Adm. John Kirby said that NORAD is ready to track Santa Claus as he delivers gifts next week. Speaking tongue-in-cheek, he said if Santa drops anything off his sleigh, "we've got destroyers out there to pick them up." (Dec. 19) Video provided by AP
Powered by NewsLook.com
NASA's Planet-Finding Kepler Mission Isn't Over After All

NASA's Planet-Finding Kepler Mission Isn't Over After All

Newsy (Dec. 18, 2014) More than a year after NASA declared the Kepler spacecraft broken beyond repair, scientists have figured out how to continue getting useful data. Video provided by Newsy
Powered by NewsLook.com
Rover Finds More Clues About Possible Life On Mars

Rover Finds More Clues About Possible Life On Mars

Newsy (Dec. 17, 2014) NASA's Curiosity rover detected methane on Mars and organic compounds on the surface, but it doesn't quite prove there was life ... yet. Video provided by Newsy
Powered by NewsLook.com
Evidence of Life on Mars? NASA Rover Finds Methane, Organic Chemicals

Evidence of Life on Mars? NASA Rover Finds Methane, Organic Chemicals

Reuters - US Online Video (Dec. 16, 2014) NASA's Mars Curiosity rover finds methane in the Martian atmosphere and organic chemicals in the planet's soil, the latest hint that Mars was once suitable for microbial life. Linda So reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins