As far as I know, I'm the first real instrument that has been used for maximum likelihood polarization analysis!
The 2nd paper is about polarization analysis using the maximum likelihood method. t.co/DiUy6izPOE
Alex wrote two papers about me that were accepted to ApJ! One is about polarization analysis of the GRB I detected: t.co/T5YO0ZyElz
If you're at the HEAD meeting, look out for all the presentations about me!
Here's my cryostat in the lab in Berkeley. It still works!Show Media
You might be wondering why I looked so empty in my last tweet. Most of me is in these wooden cratesShow Media
@stratoballoon Actually it's good that I was disassembled! That way I'm less likely to break during transport.
@stratoballoon My electronics boxes are still packed up in crates.
[2017/04/25 (NZST)] "Extreme Universe Space Observatory (EUSO)" will launch from Wanaka soon on a super pressure... t.co/Dqh7Zsdmu4
NASA meteorological balloon falls in Arequipa:... t.co/4hiVtL63XL
I posted 5 photos on Facebook in the album "20160517_COSI_Launch" t.co/cGGaxjmQrq
I posted 2 photos on Facebook in the album "20160517_COSI_Launch" t.co/LxttYgV5Qs
A camera on my top caught my shadow with a parachute during landing right before touchdown in Southern Peru.... t.co/9aqNipgGI3
I've been at float for 46 days! It's been fun, but I'm coming back to earth now. See you soon, Peru! t.co/ggZ0ANCVKe
Maybe I'll go back to New Zealand. It was nice there. t.co/1XiyAE5t3s
I'm just really loving this section of the pacific! t.co/2rqS5wk2Ny
@stratoballoon everyone needs a little tropical vacation now and then 🏝
Just taking a lazy day meandering around the South Pacific... t.co/1XiyAE5t3s
I've done a complete circumnavigation (is it really a navigation if I can't steer, though?) Hi, New Zealand! I missed you
Today I passed over Chile and am currently floating over Argentina. Signing out for the night. ¡Buenas noches!
And you all thought I was trying to write Cosi in cursive with my flight path!
I've been floating 11 days. Approaching south America!... t.co/H1fJMpQbwB
NASA/COSI telescope project covered in WIRED magazine. Steve Boggs quoted. t.co/vheQjseh5X
I posted 15 photos on Facebook in the album "20160517_COSI_Launch_phone" t.co/aDj2l0rISc
@BrentMochizuki the gps antenna box you made me is blocking my view!Show Media
Got this cool selfie with my alien friend and passenger from space!Show Media
I posted 7 photos on Facebook in the album "20160517_COSI_Launch" t.co/vm8IredD9a
Starting inflation of the tow balloon! This will lift up the top of the large balloon during its inflation
Helium trucks and the spool and the balloon being laid outShow Media
Here I am on the flight line, waiting as CSBF lays out the balloon.Show Media
The balloon is out to on the flight line with me! Watch here at t.co/ggZ0ANCVKe
There I am hanging from the launch vehicle. Keeping my fingers crossed (metaphorically) for a launch!Show Media
@nzfatmatt I wasn't here last time in Wanaka! Last year they didn't fly a science instrument. But I think they only waited about 2 weeks
We are so glad to have another opportunity for launch attempt after waiting for a period of time. Let's keep our... t.co/DifqNH30oQ
Last year the first snow in Wanaka was on May 25. I hope I'm in space before the first snow this year!
No launch tomorrow. Looks like I'll be enjoying Wanaka for a little longer...
@dannycbowman the high altitude winds are good until July / August. I will launch someday!
I've been flight ready for month and a day. Too bad the weather doesn't look good for tomorrow or the day after. I blame El Niño.
Just sitting here getting calibrated. Unfortunately the weather isn't good for launching me in the next few days 🙁Show Media
What did we do while waiting for a good launch opportunity?... t.co/1Lh9bqh4nH
@dannycbowman - the payload was on the runway but the balloon stayed inside.
I'm just hanging out while my team checks my detectors and telemetryShow Media
Carolyn getting ready to put on my back panel and tape the last temperature sensors in place (look at her hard hat!)Show Media
Brent untangling my Ethernet cable in preparation for rolling me outside!Show Media
I might launch tomorrow! McBride is making sure I don't have any grounding loopsShow Media
I might launch tomorrow morning, probably around 9 AM New Zealand time (2 PM pacific time). Stay tuned for updates
No launch tomorrow or the next day. But maybe, just maybe, a chance for Wednesday morning (New Zealand time)
The balloon is leaving the hangar and heading out to the flight lineShow Media
I'm hanging from the launch vehicle! I'll be here for the next few hoursShow Media
Thanks for the good luck chocolate, Maïca!! I only eat electricity, but my team thought the chocolate was great 🙂Show Media
I might get launched tomorrow! The launch window is 8am - 10am New Zealand time (1-3pm pacific time). Stay tuned!
Trying to launch tomorrow. Launch window is 8-10am NZT, 1pm-3pm PDT
New day, same story. No launch tomorrow or the next day. Stay tuned my friends!
It's just a little too windy! My launch attempt for this morning has been cancelled!
[2016/04/09] COSI Update - Everything looks good so far in our first attempt. Proceeding to flight line now. t.co/m3EDEceOdM
Here's the parachute and the back of the launch vehicle (I'm hanging from the front)Show Media
I might launch later this morning!! Here's the launch vehicle waiting to pick me upShow Media
Possible launch opportunity tomorrow. My launch window beings at 8am NZ time, 1pm PDT
While I wait to launch, my team is making sure that my gps and I can figure out where in the sky sources areShow Media
No launch tomorrow or the next day. Still waiting for the perfect conditions before I fly!
I have a new friend on my antenna boom! Guess I won't get lonely during flightShow Media
While we wait for the weather to be perfect, my team is calibrating me with an extended sourceShow Media
No launch for @COSIBalloon tomorrow... The next day looks unlikely too but no official word about that yet
I'm ready to launch! Just waiting for the perfect day. Tomorrow is a no-go, I'll update you when I find out more!
Now that I passed compatibility, I'm officially flight ready! We just need to wait for some good weather...
Cute video of the "COSI selfie" during the hang test yesterday from NASA (by Bill Rodman) t.co/qdR0J2jQET
Astrophysicists prepare for launch: Boggs is excited because this is a pioneering opportunity tomap thewhole sky. t.co/r8KldYiXgq
I'm taking selfies! You can just barely see the camera at the end of my selfie stickShow Media
International research team prepares for NASA balloon launch in Wanaka :... t.co/3xKu8ScJ4w
Warbirds of Wanaka and COSI Calibrations t.co/f5sqHR6I2rShow Media
I'm glad my team has the doors open so I can see all these planes!Show Media
There's an airshow at the airport this weekend: warbirds over Wanaka. I get to see some cool planes!Show Media
My benevolent creator @ProfSteveBoggs and I will be on TV3 tonight!Show Media
Thanks @BrentMochizuki, now my gps antennas won't get too coldShow Media
McBride brought a few computers to work on @COSIBalloon
I'm getting calibrated some more! Soon I'll be great at measuring polarization.Show Media
Carolyn is making me new side panels! The foam will keep me at a good temperature in flight.Show Media
McBride inspecting the temperature sensors and heaters on the @COSIBalloon cryostat
Polarization calibration for @COSIBalloon using Cs137 to scatter off a NaI scintillator into the Ge detectors below
I'm in a press release! NASA Scientific Balloon Team Hopes to Break Flight Duration Record with New Zealand Launch t.co/RCuXUnky8d
First rollout of the year for @COSIBalloon. Testing the GPS systems
COSI grew bigger wings! Alex, McBride and I are integrating our payload with CSBF in Palestine, TX t.co/YlVfuRpjsh
Preparing for our upcoming super pressure balloon flight from Wanaka, New Zealand in April 2016!
Brrr! I said it's cold up here. There must be some COSI in the atmosphere!
A full electronics bay makes me happy 🙂 t.co/cLupxwa5GUShow Media