Archive for the ‘Instrumentation’ Category

Tuesday picture: happy birthday Hubble!

Tuesday, April 27th, 2010

The Hubble Space Telescope turned twenty years old this weekend. In those two decades it’s produced a huge amount of scientific output, with over 8,000 peer-reviewed papers based on Hubble data. Perhaps almost as importantly, it’s brought a great many beautiful pictures to an extremely broad audience; it’s contribution to astronomers’ outreach and education efforts through these pictures and the Hubble Office for Public Outreach is incalculable.

This is a stunning picture released by NASA and ESA to celebrate the anniversary. It’s of a nebula - a cloud of gas and dust - called Carina, which is forming new stars at one of the highest rates in our galaxy. And that means that, just as I’ve said of other nebulae, it’s a pretty violent place. I’m posting this on the move, so I encourage you to go to the Hubble site for a full description.

A star-forming region in the Carina Nebula, 75,000 light-years away

A star-forming region in the Carina Nebula, 75,000 light-years away

Back in action

Saturday, September 12th, 2009

You might remember the servicing mission the Hubble telescope received a few months ago, which fixed and upgraded several of the instruments on board. This week the first pictures since the refit have been released.

Part of Omega Centauri, a globular cluster of stars orbiting our galaxy.

Part of Omega Centauri, a globular cluster of stars orbiting our galaxy. Taken by the Wide Field Camera 3, newly installed on Hubble.

The BBC has a slideshow with some of the images. You can get the whole set and read the news release at the Hubble site.

In less world-spanning news, I’m back from my trip and ready to start posting again. I’m also in the pleasant but unexpected situation of having made a profit of some £40 from the show I was in in Edinburgh!

Galileo and the IYA

Saturday, February 21st, 2009

2009 is the International Year of Astronomy, and was chosen because it’s the 400th anniversary* of the first use of the telescope for astronomy, by Galileo Galilei. The instrument had only been invented the previous year, and Galileo made significant improvements to its design and turned it to scientific use.

The first use of an astronomical telescope seems like an event worth celebrating for its symbolic significance, but Galileo also made some groundbreaking scientific discoveries in the first two years of its use. I’m going to talk about four of them here.

Galileo published his observations in his book Sidereus Nuncius, or “Starry Messenger”. A scanned copy complete with his hand sketches of what he saw is here.

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