HEAPOW: Chandra at 15 (2014 Jul 28)

Find out the latest thinking about our universe.
Post Reply
User avatar
bystander
Apathetic Retiree
Posts: 21571
Joined: Mon Aug 28, 2006 2:06 pm
Location: Oklahoma

HEAPOW: Chandra at 15 (2014 Jul 28)

Post by bystander » Mon Jul 28, 2014 5:39 pm

Image HEAPOW: Chandra at 15 (2014 Jul 28)

Fifteen years ago, on July 23, 1999, the Space Shuttle Columbia carried aloft in its payload bay an extraordinary instrument, NASA's third "Great Observatory", the Chandra X-ray Observatory. After being released from Columbia, Chandra's Inertial Upper Stage propelled the observatory to its final orbit, a highly elliptical path taking it a third of the way to the moon. Chandra's complement of instruments include the Advanced CCD Imaging Spectrometer (ACIS), the High Resolution Camera (HRC), and the Low Energy and High Energy Tranmission Grating Spectrometers (LETGS and HETGS, respectively), but its real claim to fame is its exquisite X-ray mirror assembly, the finest ever flown. Chandra's mirrors and cameras are capable of distinguishing objects separated by only one-half arcsecond, which the equivalent to reading a stop sign at a distance of twelve miles (assuming the stop sign was emitting X-rays). During the past 15 years, Chandra has taken over 14,000 observations of X-ray emitting planets, normal stars, black holes, neutron stars and other compact objects, galaxies and galaxy clusters, and has measured the hot wreckage from stellar explosions and galaxy collisions, and probed the mysterious dark matter which makes up much of the cosmos. The images above are representative of the last 15 years: four beautiful Chandra observations of famous supernova remnants, the Crab Nebula (upper left), Tycho (upper right), G292.0+1.8 (lower left), and 3C58 (lower right). Astronomers hope to have access to Chandra's unique imaging and spectrometric capabilities for years to come.

Chandra X-ray Observatory Celebrates 15th Anniversary
NASA | MSFC | SAO | CXC | 2014 July 22
<< Previous HEAPOW High Energy Astrophysics Picture of the Week Next HEAPOW >>
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

User avatar
MargaritaMc
Look to the Evenstar
Posts: 1836
Joined: Wed Jan 09, 2013 10:14 pm
Location: 28°16'7"N 16°36'20"W

Re: HEAPOW: Chandra at 15 (2014 Jul 28)

Post by MargaritaMc » Tue Jul 29, 2014 11:48 am

There is a nice blog post here http://www.chandra.si.edu/blog/node/511 from the retired director of Chandra.
"In those rare moments of total quiet with a dark sky, I again feel the awe that struck me as a child. The feeling is utterly overwhelming as my mind races out across the stars. I feel peaceful and serene."
&mdash; Dr Debra M. Elmegreen, Fellow of the AAAS

Post Reply