CaltechAUTHORS
Published January 2023 | Version public
Journal Article Metadata-only

The Near Infrared Imager and Slitless Spectrograph for the James Webb Space Telescope. IV. Aperture Masking Interferometry

Creators

Abstract

The James Webb Space Telescope's Near Infrared Imager and Slitless Spectrograph (JWST-NIRISS) flies a 7-hole non-redundant mask (NRM), the first such interferometer in space, operating at 3–5 μm wavelengths, and a bright limit of ≃4 mag in W2. We describe the NIRISS Aperture Masking Interferometry (AMI) mode to help potential observers understand its underlying principles, present some sample science cases, explain its operational observing strategies, indicate how AMI proposals can be developed with data simulations, and how AMI data can be analyzed. We also present key results from commissioning AMI. Since the allied Kernel Phase Imaging (KPI) technique benefits from AMI operational strategies, we also cover NIRISS KPI methods and analysis techniques, including a new user-friendly KPI pipeline. The NIRISS KPI bright limit is ≃8 W2 (4.6 μm) magnitudes. AMI NRM and KPI achieve an inner working angle of ∼70 mas, which is well inside the ∼400 mas NIRCam inner working angle for its circular occulter coronagraphs at comparable wavelengths.

Additional Information

© 2023. The Astronomical Society of the Pacific. JWST is a partnership between NASA, ESA, and CSA. The NIRISS instrument was funded by the Canadian Space Agency and built in Canada by Honeywell. AS and AZG acknowledge support from the NSF, NASA, and the STScI Director's Discretionary Fund, J.S.B. acknowledges the full support from the CONACyT "Ciencia de Frontera" project CF-2019/263975, PGT is grateful for support from the Australian Research Council grant DP1801034089, and BJSP under DE21010163.

Additional details

Identifiers

Eprint ID
119905
Resolver ID
CaltechAUTHORS:20230308-468102500.10

Funding

NSF
NASA
Canadian Space Agency (CSA)
Consejo Nacional de Ciencia y Tecnología (CONACYT)
CF-2019/263975
Australian Research Council
DP1801034089
BJSP
DE21010163
European Space Agency (ESA)
Space Telescope Science Institute

Dates

Created
2023-05-23
Created from EPrint's datestamp field
Updated
2023-05-23
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Infrared Processing and Analysis Center (IPAC)