The Large Synoptic Survey Telescope www.lsst.org Angelo Fausti (afausti@lsst.org) Tucson, AZ Sky Fest, LPI - Sep 2018
2,663 m (8,737 ft)
+ + + 35 ton Telescope 8.4m Mirror 3.2Gpixel Camera + + LSST family 300+ 10 floor Building Petascale Computing Facility
From dream to reality ● Initial ideas, the “Dark Matter Telescope” in 1998 ● LSST design and development proposal in 2003 ● Mirror construction started in 2007 with private funds ● Top-ranked project in the 2010 Decadal Survey ● Construction started in 2014 ● Commissioning will start in 2019 ● Operations start in 2022 to conduct the 10-years survey! US$ 473M US$ 168M US$ 30M
Oversized ~ 9 m Overloaded ~40 ton
A very compact design M1/M3
Wide Field of View 3.5 deg ~ 7 full Moons
A 35-ton moving structure! The Telescope has to move really fast (cross the sky in about 18s). It has to stop and settle within 4s, take a 2 x 15s picture of the sky, and move again to the next position. Repeat that 1000 times every night... for 10 years...
The sky as seen by LSST HSC COSMOS Ultra Deep Field ~ LSST 10 years depth
Redshift z=18.3 (T = 0.21 Gyr)
R = 1.6 Mpc/h Redshift z=18.3 (t = 0.21 Gyr)
R = 4.6 Mpc/h Redshift z=5.7 (T = 1 Gyr)
R = 13.12 Mpc/h Redshift z=1.4 (T = 4.7 Gyr)
R = 31.25 Mpc/h Redshift z=0 (T = 13.6 Gyr)
Dark matter
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