SmackLT: Great, now we're gonna be invaded by pissed-off aliens that we accidentally blinded.
Did any glaciers melt?
Mr. Cat Poop: RIP Alderaan
veryequiped: Why are we doing this?I'm not asking from a smarmy frame, but I'd like to better understand the science behind blasting the galaxy centre with lasers?
dbirchall: Some stats as to the newsworthiness of this:Keck II has had a laser for about 10 years. Gemini, for probably 8. Subaru, for 5. Keck I, for 3.(I was a laser spotter for Keck II from 2005-2009, and for Gemini from 2006-2008. I joined Subaru in a different capacity, just as they were really getting their laser working.)For years, it was a big thing to see even one laser in use, and a huge thing to see two (because then we got to make jokes about not crossing the streams). But by 2011, in theory, there were four functional lasers on the summit.There was one night a couple years ago where all four were supposed to be used. Gemini's broke.[img.fark.net image 850x299]Also a couple years ago, Andrea Ghez - pretty much the biggest name in center-of-our-galaxy research - and her collaborators managed to get time on both Kecks, with lasers, at the same time, for the same target.[img.fark.net image 850x566]So we kept waiting and hoping for a night that everybody's laser would work. Finally, this past weekend (night of May 17-18), all four got used at the same time - pointing at different targets.[img.fark.net image 850x566]The next night (May 18-19), all four pointed at the same place at the same time. Andrea Ghez and company were using both Kecks, and Andrea also had a program in the Gemini queue that just happened to pop up. Shogo Nishiyama and company were using Subaru, and also happened to be aiming at the galactic center, studying different stuff.[img.fark.net image 850x566]Unfortunately, there were cirrus clouds... but the next night (May 19-20), things cleared up for Takeshi Oka on Subaru (studying yet another aspect of the galactic center), while Andrea and her crew continued using both Kecks, and her program came up in the Gemini queue again.[img.fark.net image 850x566]And now you know... the rest of the story of the video.
Crewmannumber6: Great! Now they're gonna shoot back
UNAUTHORIZED FINGER: My Chinook helicopter landed on the summit of Mauna Kea about three years before construction began on Keck I, and we had a snowball fight. The view is unsurpassed.
dbirchall: UNAUTHORIZED FINGER: My Chinook helicopter landed on the summit of Mauna Kea about three years before construction began on Keck I, and we had a snowball fight. The view is unsurpassed.Lucky for you, you had a helicopter that can actually take off again with passengers after landing up there. I think Blackhawks might manage it too, but anything else... I've heard stories of helicopters landing on the gravel pad around 13,000' ... and leaving by truck.
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