File:NASA Technologists Embrace Laser Instrument Challenge (10712706313).jpg

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Description	English: Goddard scientist David Harding and Goddard technologist Tony Yu are developing a lidar system that could meet an ambitious requirement of the proposed LIST mission. In 2007, the National Research Council threw down a challenge: Design a space-based laser altimeter that could measure the height of Earth's surface everywhere to within a mere 10 centimeters — all at 5-meter resolution. To this day, some believe it can't be done. Goddard scientist Dave Harding begs to differ. He and his team have embraced the challenge and are developing a laser altimeter that could provide the data from a berth onboard the NRC-proposed Lidar Surface Topography, or LIST, mission. It would generate highly detailed maps of topography and vegetation that scientists could use to forecast and respond to natural hazards and study carbon storage in forests. Read more: 1.usa.gov/17N3Bql NASA image use policy. NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission. Follow us on Twitter Like us on Facebook Find us on Instagram Credit: Bill Hrybck/NASA
Date	20 September 2013, 15:17
Source	NASA Technologists Embrace Laser Instrument Challenge
Author	NASA Goddard Space Flight Center from Greenbelt, MD, USA

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This image was originally posted to Flickr by NASA Goddard Photo and Video at https://flickr.com/photos/24662369@N07/10712706313. It was reviewed on 17 September 2016 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

17 September 2016

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	20:54, 17 September 2016		3,300 × 2,550 (6.08 MB)	Vanished Account Byeznhpyxeuztibuo (talk \| contribs)	Transferred from Flickr via Flickr2Commons

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Image title	David Harding and Anthony Yu are working on building advanced lidar systems, which could use multiple (ultimately 1,000) lasers and super-sensitive photon detectors to measure the height of Earth from space first from the space station, and ultimately a free-flying satellite. This is a photo with the early-phase instruments that they do have in the lab, as well as details of the laser (a multi-oscilator power amplifier.
Camera manufacturer	NIKON CORPORATION
Camera model	NIKON D3S
Author	NASA/Goddard Space Flight Center/Bill Hrybyk
Exposure time	1/60 sec (0.016666666666667)
F-number	f/5.6
ISO speed rating	3,200
Date and time of data generation	15:17, 20 September 2013
Lens focal length	24 mm
Headline	Anthony Yu and David Harding for Cutting Edge magazine
Short title	Anthony Yu and David Harding for Cutting Edge magazine
Width	3,300 px
Height	2,550 px
Bits per component	8 8 8
Compression scheme	Uncompressed
Pixel composition	RGB
Orientation	Normal
Number of components	3
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Data arrangement	chunky format
Software used	Adobe Photoshop CS6 (Windows)
File change date and time	11:05, 23 September 2013
Exposure Program	Manual
Exif version	2.3
Date and time of digitizing	15:17, 20 September 2013
APEX shutter speed	5.906891
APEX aperture	4.970854
APEX exposure bias	0
Maximum land aperture	3 APEX (f/2.83)
Metering mode	Center weighted average
Light source	Unknown
Flash	Flash did not fire
DateTimeOriginal subseconds	32
DateTimeDigitized subseconds	32
Color space	Uncalibrated
Sensing method	One-chip color area sensor
File source	Digital still camera
Scene type	A directly photographed image
Custom image processing	Normal process
Exposure mode	Manual exposure
White balance	Auto white balance
Digital zoom ratio	1
Focal length in 35 mm film	24 mm
Scene capture type	Standard
Scene control	High gain up
Contrast	Normal
Saturation	Normal
Sharpness	Normal
Subject distance range	Unknown
Serial number of camera	2059918
Lens used	24.0-70.0 mm f/2.8
Date metadata was last modified	07:05, 23 September 2013
Rating (out of 5)	0
Writer	NASA/Goddard Space Flight Center/Bill Hrybyk
Unique ID of original document	D875C3AE4210C91A634BDE47D1287A84
Keywords	Anthony Yu and David Harding for Cutting Edge magazine
Contact information	bill.hrybyk@nasa.gov 8800 Greenbelt Rd Greenbelt, MD, 20771 USA 301-286-4001
Sublocation of city shown	Goddard Space Flight Center
IIM version	30,175

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