August 11, 2009 12:05 PM PDT

Online resources for the amateur astronomer

by Don Reisinger
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This week, astronomers will be up in the early morning hours to see Perseids, a meteor shower that has historically proven to put on quite a show. This happens every August when Earth passes through debris from the Swift-Tuttle comet.

If you're an amateur astronomer or someone looking to get started with the hobby, you might be surprised to know that there are online tools to help you tonight, when you want to see Perseids, and every other night you go in the back yard and set up your telescope.

Go star gazing

Astronomy Network Astronomy Network is a social network for astronomers. It sounds like a neat idea, but after you sign up, you quickly realize that the site has such a small community, it's tough to find value in it.

That said, Astronomy Network's forums are a great place to hang out and communicate with some of the members. If you end up making friends with some users, you can instant message each other, send direct messages, upload videos, and add images to the site. It's a full-featured social network designed specifically for amateur astronomers, but until more people join, it won't live up to its potential.

Astronomy Network

Astronomy Network would be even better with a larger community.

(Credit: Screenshot by Don Reisinger/CNET)

CalSky CalSky is an invaluable astronomy tool. The site provides you with a search that you can modify to find exactly what you're looking for tonight. Do you want to see the International Space Station? Are you looking for meteor streams? The site will help you find it all.

When you get to the site, it determines your location. From there, it will find all the objects you search for in the night sky on a specific day (you can search for any day of the year). The site explains each cosmic event and where to find it in the sky. When you click on one of those events, it delivers a page that provides even more information. If you're serious about astronomy, this is the site for you.

CalSky

Find all the celestial objects in the sky tonight with CalSky.

(Credit: Screenshot by Don Reisinger/CNET)

EarthSky EarthSky is an informative site for amateur astronomers. The main focus of the site is podcasts, which run daily providing astronomers with news that could affect their star gazing. But EarthSky's real value is its daily "SkyWatching" feature, which provides tonight's sky conditions. Using that, you can find different visible constellations in the night sky. EarthSky is easily one of the most informative services in this roundup. Check it out.

EarthSky

EarthSky helps you find constellations each night.

(Credit: EarthSky)

Google Sky Google Sky is a neat utility that helps you determine where celestial objects are before you run outside to check them out for yourself. The app lets you see constellations, planets, the solar system, an infrared view of the galaxy, and more. It works far better in the browser than Microsoft's WorldWide Telescope. And since it provides you with the exact location of stars in the sky, it should help you find what you're looking for sooner. It's a great app.

Google Sky

Google Sky shows all kinds of neat celestial objects.

(Credit: Screenshot by Don Reisinger/CNET)

Weather Underground Weather Underground is a really useful site. Once you input your location, the service will show you a visual depiction of all the celestial objects visible from your location. When you click on one of the many objects displayed in the image, you'll be taken to a page detailing its important facts. So, if you're looking for its exact location, distance from Earth, and the peak times to see it, you should be happy.

Weather Underground

Weather Underground helps you find everything in the sky.

(Credit: Screenshot by Don Reisinger/CNET)

World of Astronomy If you're looking for an astronomy encyclopedia, the World of Astronomy is for you. Think of it as the Wikipedia of the astronomy world.

When you search for topics in the World of Astronomy, you'll find some short definitions to simple topics. But where the encyclopedia shows off is in its listing of major constellations that you can see with your telescope. It features their exact location in the sky, so you can quickly find the constellation you're looking for. World of Astronomy is worth trying out.

World of Astronomy

World of Astronomy lists several constellations.

(Credit: Screenshot by Don Reisinger/CNET)

WorldWide Telescope Although it works best on the desktop, Microsoft's WorldWide Telescope has a great Web client that gives you the same view of the sky as the desktop version.

With WorldWide Telescope, you can choose to look through different constellations. The resource also lets you check out planets. If you want, you can even enjoy a guided tour to see the important stars and celestial objects that you don't want to miss. The online client works well, but beware that it's much slower than the desktop app. If you can download the desktop client, go with that. In either case, WorldWide Telescope will help you learn before you head to the back yard to see those stars for yourself.

WorldWide Telescope

The WorldWide Telescope is a great way to learn about the galaxy.

(Credit: Screenshot by Don Reisinger/CNET)

My top 3

1. CalSky: It's, quite simply, an extremely useful service.

2. Weather Underground: Since it's unique to your location, you should find everything you want with Weather Underground.

3. EarthSky: It's full-featured and informative. What else could you ask for?

Don Reisinger is a technology columnist who has written about everything from HDTVs to computers to Flowbee Haircut Systems. Don is a member of the CNET Blog Network, and posts at The Digital Home. He is not an employee of CNET. Disclosure.

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by Darliomsa August 11, 2009 4:27 PM PDT
Don't forget Stellarium - a brilliant open source application that allows you to view the night sky from any location around the world. Includes millions! of stars; constellations; nebulae; and of course our very own planetary system. You can 'fly' to any point in the sky, track a particular star, fast forward in time... An awesome piece of software. Works on Windows, Linux and Mac OS X. You can get it at http://www.stellarium.org/.
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by ErikaAT August 11, 2009 9:24 PM PDT
and obviously....there is an app for that too. I use Star Walk quite a lot and managed to spot Meteor Showers on there as well. Looks pretty amazing with the Digital Compass function active!
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by SVPu August 12, 2009 2:18 AM PDT
hey all!

occasionally, I've met just two things mentioned in comments!) Two words about them:
they both are cool. first I met at my friend's laptop that he always take with his telescope)
Omg - designe is great and pictures of animals are beautiul - not worse than constellations))

the second I met with other friend who just showed me it in his iPhone like a nice app with good graphics. it's cool when you just go out and not taking much stuff with you - you can recognize all the constellations with it (so bad that in the sky we always find not too much of them...)

so, no word about things I don't know, but stellarium and starwalk are really good ones!)
by MeteorGeek August 12, 2009 2:38 AM PDT
This is GREAT info on Perseids, well done. I'm battling to see them this morning through the haze -- here are some older videos of the Perseid meteor showers if you need a fix like me: http://bit.ly/QPcnV
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by skyscraperjim August 12, 2009 10:06 AM PDT
I've been a rather dedicated amateur astronomer for the past 2 and a half decades, and most of these sites are new to me. Besides Weather Underground, Google Sky (which I've never liked) and WWT are the only ones I've known about. Astronomy Network is an interesting concept, but seems to be in need of more promotion. A mention in S&T or Astronomy magazine would help.

My top 3, none of which are mentioned here:

CloudyNights
Heavens-Above
SpaceWeather
(all dot com)
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by OlgaSh August 12, 2009 7:58 PM PDT
Don, thanks for the great overview of astronomy apps and online resources.
As I see astronomy becomes more and more popular. It would be really nice if you made an overview of iPhone astronomy apps. For me it was a tough task to choose the best one. There are at least five apps that deserve our attention among them are Star Walk, Pocket Universe, Distant Suns and some others.
Personally I use Star Walk now. And it would be nice to read your thoughts. Thanks!
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by dmourati August 13, 2009 3:45 AM PDT
Got a shot of the Perseids tonight!

http://www.flickr.com/photos/dmourati/3817408512/
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by SVPu August 13, 2009 5:00 AM PDT
Wow, I found a great table with iPhone apps comparison (OlgaSh, you may like it): http://physics.weber.edu/schroeder/iPhoneStarApps/
By the way, Star Walk is a leading one!
Check it out: http://www.youtube.com/watch?v=8ECsFEfrrwU

PS: While exploring Utube I also found nice video of yesterday's perseids:
http://www.youtube.com/watch?v=3AlsWtOp844
They are great, I gonna try to see some this evening!

PPS: button "submit" for some reason doesn't work, so I'm replying for someones posts))
by Rapid-Eye August 17, 2009 6:22 AM PDT
Heavens Above is _THE_ site to go to for satellite viewing: ISS, Hubble, Iridium Flares, etc - its the Go To site! http://www.heavens-above.com/
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