Export Control Notice Export or reexport of information

  • Slides: 21
Download presentation
Export Control Notice Export or re-export of information contained herein may be subject to

Export Control Notice Export or re-export of information contained herein may be subject to restrictions and requirements of U. S. export laws and regulations and may require advance authorization from the U. S. Government. 25 Aug 2008 NWO Science Telescope

NWO Team Membership: Organizations, Roles, and Leads • Team consist of 43 active members

NWO Team Membership: Organizations, Roles, and Leads • Team consist of 43 active members – 9 organizations are participating • Additional involvement is provided from each organization and includes technical area experts and graduate/undergraduate students • Organizations, Roles and Leads: – – – – – 2 Colorado University: PI, Science, Optical Design, and Systems Analysis: Webster Cash Northrop Grumman: Deputy PI and Starshade Development: Amy Lo Ball Aerospace Technology Corporation: Telescope Development: Charley Noecker USNO: Astrometry: Rachel Dudik NASA GRC: Occulter (Starshade) Propulsion: Scott Benson Kinet. X: Mission Design and Navigation: Bobby Williams GSI: Lead Scientist: Maggie Turnbull University College of London: Exoplanet Spectra Modeling: Giovanna Tinetti NASA GSFC: Study Management: Kate Hartman 25 Aug 2008

The New Worlds Observer • The telescope is shaded from the star by the

The New Worlds Observer • The telescope is shaded from the star by the starshade – Beside a vanishingly small residual signal, starlight never enters the telescope Starshade 100% of the planet light still reaches the telescope 3 25 Aug 2008

A Starshade Can Work with Any Telescope 1. 2 m 4 m 2. 4

A Starshade Can Work with Any Telescope 1. 2 m 4 m 2. 4 m 4 25 Aug 2008 10 m

Measure Planetary System Characteristics Export Control Notice Export or re-export of information contained herein

Measure Planetary System Characteristics Export Control Notice Export or re-export of information contained herein may be subject to restrictions and requirements of U. S. export laws and regulations and may require advance authorization from the U. S. Government. 25 Aug 2008 NWO Science Telescope Zodiacal Light Indicates Orbital Inclination So Do Multi-planet Position Statistics

Planet Finding with Starshades Five Random Systems from Raymond Database JWST The higher resolution

Planet Finding with Starshades Five Random Systems from Raymond Database JWST The higher resolution of ATLAST brings weak signals out of the noise 6 ATLAST 25 Aug 2008

Spectroscopy of Earths JWST ATLAST @ High Resolution Fine Structure! 7 25 Aug 2008

Spectroscopy of Earths JWST ATLAST @ High Resolution Fine Structure! 7 25 Aug 2008

Measure Planetary System Characteristics Epsilon Eridani • Exozodiacal Light and Debris • Will Give

Measure Planetary System Characteristics Epsilon Eridani • Exozodiacal Light and Debris • Will Give Clues on Whole System • May Interfere with Planet Detection • NOTHING is yet known about Exozodis – Solar System zodi has red scattered light color – Known debris disks show red, grey, & blue colors 8 25 Aug 2008 Beta Pic Red Greaves et al. (2005) HD 92945 Neutral AU Mic Blue

Perform General Astronomy • During 70% of Observing Time the Starshade will Be Travelling

Perform General Astronomy • During 70% of Observing Time the Starshade will Be Travelling to the next Target. • Unify Exoplanet and UVOIR Communities • Very Broad Range of Astronomy Served KBO UB 313 9 25 Aug 2008

Modeling and Lab Studies • Apodizing Function The Hypergaussian function • Opaque Starshade Radius

Modeling and Lab Studies • Apodizing Function The Hypergaussian function • Opaque Starshade Radius Parameter 10 Occulter inner radius a Petal 1/e length b Hypergaussian order n Distance to telescope z Number of petals P 25 Aug 2008 Transmission Apodization Function

Modeling and Lab Studies Linear 11 Log • The starshade has broadband suppression performance

Modeling and Lab Studies Linear 11 Log • The starshade has broadband suppression performance • Starshade designed for longest wavelength suppression, and then works BETTER at all shorter wavelengths 25 Aug 2008 • Several simulation codes exist • Code cross checked and in process of being validated by laboratory results

NGS Starshade with HID source, 1000 s integration wire Chamber door closed wire Wire

NGS Starshade with HID source, 1000 s integration wire Chamber door closed wire Wire 3. 9 e-7 wire (Chamber door open) wire Wire 4. 3 e-7 Total suppression within 200 pixel radius = 8. 8 e-006 12 25 Aug 2008

6/19/09 Image 27 - 600 sec 5. 05 e-010 13 25 Aug 2008

6/19/09 Image 27 - 600 sec 5. 05 e-010 13 25 Aug 2008

NWO Mission Overview 14 25 Aug 2008

NWO Mission Overview 14 25 Aug 2008

Starshade Design and Fabrication Enabling Technologies Precision Shape Control • Maintain edge position •

Starshade Design and Fabrication Enabling Technologies Precision Shape Control • Maintain edge position • Maintain structure shape Thin Edge Treatment • Maintain edge stability • Minimize stray light Precision Deployment • Minimize jitter • Maintain petal location Opaque Membrane • Maintain opacity • Lightweight 2 Axes Formation Flying • Maintain 1 m alignment • Minimize jitter Enhancing Technologies 15 25 Aug 2008 Solar Electric Propulsion • NEXT engine • Increase observable targets • Reduce propellant mass Lightweight S/C Structures • Increase observable targets • Reduce overall mass

Starshade Alignment Systems See Telescope from Starshade See Starshade From Telescope 16 25 Aug

Starshade Alignment Systems See Telescope from Starshade See Starshade From Telescope 16 25 Aug 2008

United States Naval Observatory Joint Milli-Arcsecond Pathfinder Survey Instrument Parameters: • • • Objectives

United States Naval Observatory Joint Milli-Arcsecond Pathfinder Survey Instrument Parameters: • • • Objectives and Description: 7. 5”, f/20 ultra-low-distortion optical/NIR astrograph telescope Si. C optics, metering structure Advanced, large format CMOS Hybrid FPA Gratings for color sensing Mass ~ 40 kg Power ~ 85 W • • Fully Funded mission ready for December 2011 launch Dedicated, high-accuracy astrometric instrument – Single measurement precisions (narrow – field) of 5 milli-arcseconds from 0 -16 mag. 1 milli-arcsecond global accuracy over 3 year mission life JMAPS Mission Goals: • • • Update star catalogs, viable for decades Demonstrate 10 mas attitude determination on -orbit Mature critical optical and FPA technology NWO Formation Flying Solution: • JMAPS TIMELINE Authority to Proceed October 2008 17 25 Aug 2008 System Req. Review June 2009 System Design Review December 2009 Preliminary Design Review Critical Design Review June 2010 • State of the art optics and detector technology permits high accuracy astrometry—critical for NWO formation flying Updated stellar catalog in time for NWO Launch December 2011 FY 2011 -2014 Operations December 2015 Release of Final Catalog. in time for NWO

GRC: NEXT Ion Propulsion System • Starshade Spacecraft requirements strongly favor use of electric

GRC: NEXT Ion Propulsion System • Starshade Spacecraft requirements strongly favor use of electric propulsion to maximize science • NEXT ion propulsion system provides greatest number of targets with the simplest system configuration compared to other EP options • Thruster performance and lifetime capabilities provide significant flexibility in implementing primary and extended mission operations • Critical elements of a NEXT system are planned to achieve TRL 6 under the NASA SMD In-Space Propulsion Technology Project • NEXT can be implemented on NWO with low risk through planned transition-to-flight development 18 25 Aug 2008

The Top Technology Tall Poles for NWO TALL Poles • Starshade optical performance simulation

The Top Technology Tall Poles for NWO TALL Poles • Starshade optical performance simulation and validation • Starshade deployment and shape maintenance • Trajectory and Alignment Control (TAC) system – Both sensors and control algorithms • 19 25 Aug 2008 4 m telescope design and high sensitivity detectors

NWO Technology Development Roadmap 20 25 Aug 2008

NWO Technology Development Roadmap 20 25 Aug 2008

NWO Study http: //newworlds. colorado. edu This is what a multi-billion dollar flagship should

NWO Study http: //newworlds. colorado. edu This is what a multi-billion dollar flagship should be. Engage the public like Voyager and Hubble Unify the astronomy community ANSWER THESE QUESTIONS: ARE THERE HABITABLE PLANETS IN THE UNIVERSE? IS THERE LIFE IN THE UNIVERSE? Other, lower cost missions, should support this goal without slowing it down. 21 25 Aug 2008