Musings on optics, physics, astronomy, technology and life

Archive for April, 2015

A quarter-century of wonder

By now everybody has probably heard that today is the 25th anniversary of the launch of the Hubble Space Telescope. I couldn’t possibly put all the links to all the news coverage in this blog entry. We’ve got photos that show how HST changed the world, the breathtaking video made from the official 25th-anniversary Hubble photo, and the telescope’s amazing comeback story (with a mention of OSA to boot). The anniversary has its own website and you can even download a free ebook that will last as long as … well, as long as you have a device that can read and open the file and a storage medium that can save the file without corruption.

On and off, the Hubble Space Telescope has been a recurring theme of most of my adult life. I remember the initial anticipation, followed by the long wait in storage after the Challenger disaster (didn’t that storage cost $1 million per month, or something like that?). Somehow I don’t recall watching the launch, but I certainly knew it happened, and I certainly followed the headlines when the spherical aberration was discovered and the finger-pointing began. When I moved from Massachusetts to Maryland, I had to deal with a housemate who kept calling the orbiter “the Hubble Space Paperweight.”

But then I was at the AAS meeting in January 1994 when the “before” and “after” photos of a spiral galaxy (it might have been M101) were brought out to a hastily assembled brown-bag lunch crowd in one of the hotel ballrooms. When the “after” photo was revealed by someone lifting an opaque piece of paper over the second half of the viewgraph (remember viewgraphs, folks?), everyone broke into thunderous applause. Later, in the exhibit hall, I poured over an enlarged version of the photo mounted on a display board, and I marveled at the incredible detail.

Since then, of course, I’ve been as dazzled as anyone over the photos and the science that have come from Hubble. I’m proud to live a couple of miles down the road from one of the places that did so much work on the instrumentation. I did an article for Optics & Photonics News on the last Hubble repair mission, and I saw some of the last batch of instruments through the NASA Goddard clean-room window, and I even got to watch the astronauts go in there and handle some of the actual tools they would use during their spacewalks.

Recently I got a chance to attend a sneak preview of the National Geographic Channel’s documentary Hubble’s Cosmic Journey, narrated by Neil deGrasse Tyson (whose voice would thrill me if he were just reading the phone book…) — it looked fabulous on the big screen in the Nat Geo auditorium. I’ll leave you with a couple more links: reflections by one of the Hubble-repair astronauts and the Hubble 25th anniversary entry on the IYL blog.