W. M. Keck Observatory overnight captured the very first successful science data from its newest, cutting-edge instrument, the Keck Cosmic Web Imager (KCWI).
KCWI captures three-dimensional data, as opposed to the traditional two-dimensional image or spectrum of conventional instruments. In a single observation, it records an image of the object at multiple wavelengths allowing scientists to explore both the spatial dimension (as in an image) and the spectral dimension (or color) of an object.
“I’m thrilled to see this new instrument,” said Keck Observatory Director Hilton Lewis. “It takes years to design and build these very sophisticated instruments. KCWI is a superb example of the application of the most advanced technology to enable the hardest science. I believe it has the potential to transform the science that we do, and continue to keep Keck Observatory right at the forefront of astronomical research.”
KCWI is extremely sensitive, specifically designed to capture high-resolution spectra of ultra-faint celestial bodies with unprecedented detail. It is able to differentiate even the slightest changes in spectral color with a great degree of accuracy.
This powerful capability is key for astronomers because a highly-detailed spectral image allows them to identify a cosmic object’s characteristics, including its temperature, motion, density, mass, distance, chemical composition, and more.
The W. M. Keck Observatory in Hawaii has just been awarded the 2015 NASA Group Achievement Award for pioneering the Keck Observatory Archive (KOA) ten years ago, which has significantly increased the impact of Keck Observatory data. The award was received by Keck Observatory Chief Scientist, Dr. Anne Kinney at NASA headquarters on December 8, 2015.
“For the past 10 years, the NASA KOA team has boosted the science value of data acquired at Keck Observatory by providing the scientific community with open access to WMKO data,” said Mario Perez, Keck Observatory Program Executive at NASA Headquarters in Washington. “They helped set a standard that all new ground based observatories are adopting. For this, the NASA KOA team has earned the NASA Group Achievement Award.”
“We are very proud of this award as well as the KOA project itself,” said Hilton Lewis, Director of W. M. Keck Observatory. “This was the brainchild of Anne Kinney while she was at NASA and who I am happy to report recently joined Keck Observatory as our Chief Scientist. Thanks to her vision, data gathered by all instruments at Keck Observatory is available for everyone to use. The Keck Observatory telescopes are the most scientifically productive on Earth, responsible for gathering data used in about 300 peer-reviewed scientific papers per year – almost one per night. There are terabytes of valuable data collected over the last 20 years waiting to be mined.”
In 2004, NASA established a partnership with WMKO to acquire large volumes of data from a single instrument, the High Resolution Spectrograph (HIRES), for NASA science purposes. It is standard practice to make data from NASA’s space telescopes available to the world in a public archive, but in 2004 it was unheard of to do the same with data from a ground-based telescope. Kinney, then Director of the Astrophysics Division at NASA Headquarters, decided to start a visionary project of promoting public access to these data, and the project began by archiving NASA-acquired HIRES data.
One of the things the recent controversy has starkly revealed is the lack of understanding of what we do on the mountain. Myths and misunderstandings pepper the comment sections of local newspapers and echo on Facebook.
In an effort to change this the obsevatories are introducing a new tour opportunity. The Kamaʻāina Observatory Experience is a free tour of an observatory, with free transportation to the summit for local residents. All that is necessary is a local ID to get a chance to see inside one of the summit facilities.
Rumor has it that Hawaii Forest and Trail will be providing the transport, a comfortable service with knowledgable guides.
Surprisingly this was announced by President Obama at the White House Star Party this week. A rather high profile announcement for a local effort.
I will probably volunteer to help out and be a tour guide when it comes Keck’s turn to host the tour.
Information can be found on the website http://www.kamaainaobservatoryexperience.org
So last month the observatory clocks decided is was 1995. A software bug interfered with proper decoding of the GPS time signal. For a few weeks we got by by kludging two of the old clocks together in a creative way to provide good time for the telescopes.
The new clocks are now fully online and operational. I ran one of the new time servers for a couple weeks while keeping the old time servers in place as a backup. These have now been removed, with a second new unit installed as an in-place spare.
Hopefully this will keep everything on-time for the foreseeable future. Two new precision clocks, Microsemi SyncServer S350’s, time accurate to microseconds.
Meantime there may be a fix for the old equipment, a new GPS module by Heol Design. We have one on order to try. It would be a shame to throw out these very nice clocks.
Time… It is simply a matter of time. At 00:00UT May 3rd, many of the observatory computers suddenly started reporting that the date was September 17th, 1995. To say that this created some problems is a dramatic understatement.
The problem came from the primary observatory clock. This clock, properly called a time server, uses GPS signals to create a time reference that is accurate to microseconds. This is made possible by referencing to the atomic clocks carried by each GPS satellite. A time server is intricately connected to the network to distribute this time. Any computer in the building can ask it for time via the NTP protocol, but that has some inaccuracy due to network delays. For equipment requiring more precise time the server distributes a hard wired time reference using the IRIG-B protocol or a 1PPS timing pulse.
Without accurate time a telescope will simply not point in the correct direction. The calculation that the computers perform must take into account our rotating planet. Feed incorrect time to that calculation and you will point to the wrong piece of sky. A few milliseconds off can result in a pointing error of arcseconds, a large error for a large telescope.
Here is the video of last Friday’s presentation, Perspectives on the Future of Mauna Kea. Well worth the watch for anyone interesting in the issue. My thanks to Doug Simons for representing the observatories!
If there is any complaint about the camera work… My fault.
With the start of March the observatory known as JAC is no more. The Joint Astronomy Center ran two telescopes, the United Kingdom Infrared Telescope (UKIRT) and the James Clerk Maxwell Telescope (JCMT). Both telescopes have been transferred to new management and will continue to pursue science.
You can get more details on Tom Kerr’s blog A Pacific View.
I would also suggest you take a few minutes and enjoy some beautiful time-lapse to celebrate the achievements of the JAC…