Broadband Active Segmented Aperture and Radial Shear Nulling

The Visible Nulling Coronagraph (VNC) is a starlight suppression system for enabling exoplanet detectionand atmospheric measurement. Conceptual space telescope missions including the large UV/optical/IR(LUVOIR) surveyor require such a starlight suppression system to carry out the scientific goals associatedwith directly imaging nearby worlds. Direct imaging is complementary to upcoming missions like TESS, andshould eventually enable access to the > 95% of habitable worlds outside of transit discovery space.This IRAD supports near-term work to 1) fabricate and test symmetric broad-band interferometric nulling optics; 2) demonstrate automated fine alignment of the Segmented ApertureInterferometric Nulling Testbed (SAINT) primary mirror; 3) quantify performance of the SAINT closed-loopfine pointing system; and 4) assemble, align and demonstrate a radial shear first order implementation of asystem known as the Phase-Occulation Nulling Coronagraph (PONC).

Data and Resources

Field Value
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier TECHPORT_93238
issued 2018-09-01
landingPage https://techport.nasa.gov/view/93238
modified 2020-01-29
programCode {026:027}
publisher Space Technology Mission Directorate
resource-type Dataset
source_datajson_identifier true
source_hash 1d566ab46a7704b8cb1695fcc0c06d8fa82b3a0f
source_schema_version 1.1
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • active
  • amerigeo
  • amerigeoss
  • ckan
  • geo
  • geoss
  • goddard-space-flight-center
  • national
  • north-america
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer TECHPORT SUPPORT
maintainer_email hq-techport@mail.nasa.gov
metadata_created 2025-11-22T13:29:23.127195
metadata_modified 2025-11-22T13:29:23.127199
notes <p>The Visible Nulling Coronagraph (VNC) is a starlight suppression system for enabling exoplanet detection<br />and atmospheric measurement. Conceptual space telescope missions including the large UV/optical/IR<br />(LUVOIR) surveyor require such a starlight suppression system to carry out the scientific goals associated<br />with directly imaging nearby worlds. Direct imaging is complementary to upcoming missions like TESS, and<br />should eventually enable access to the &gt; 95% of habitable worlds outside of transit discovery space.<br />This IRAD supports near-term work to 1) fabricate and test symmetric broad-<br />band interferometric nulling optics; 2) demonstrate automated fine alignment of the Segmented Aperture<br />Interferometric Nulling Testbed (SAINT) primary mirror; 3) quantify performance of the SAINT closed-loop<br />fine pointing system; and 4) assemble, align and demonstrate a radial shear first order implementation of a<br />system known as the Phase-Occulation Nulling Coronagraph (PONC).</p>
num_resources 4
num_tags 10
title Broadband Active Segmented Aperture and Radial Shear Nulling