JWST Observer News

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JWST Observer News includes the latest updates on proposing, the calibration pipeline, and software targeted to the astronomical community. Stay informed by subscribing at the bottom of the page.

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Pipeline News: Build 12.1 of the Science Calibration Pipeline Is Now Available

November 21, 2025

Build 12.1 includes improvements to all four JWST instruments.
Detector Multistripe Capability for NIRCam and NIRISS Is Available for Cycle 5 Proposers

October 2, 2025

Cycle 5 proposals can take advantage of NIRCam and NIRISS multistripe capabilities.
New Sky Background Images for NIRISS Wide-Field Slitless Spectroscopy

August 26, 2025

These new images significantly improve the subtraction of the sky background in WFSS data.
Pipeline News: Build 12.0 of the Science Calibration Pipeline Is Now Available

August 6, 2025

Build 12.0 includes improvements for MIRI, NIRCam, and NIRISS as well as time-series observations.
Pipeline News: NIRISS AMI Calibration Upgrade

July 24, 2024

Build 10.2 includes several upgrades for the NIRISS Aperture Masking Interferometry (AMI) mode.
NIRISS Has Returned to Science Operations

January 31, 2023

JWST's NIRISS instrument has resumed observations.
NIRISS Is Currently Unavailable for Prime and Coordinated Parallel Observations

January 20, 2023

Tests are being conducted and a number of pure parallel observations are being executed to determine the cause.
NIRCam and NIRISS Simulator Is Now Available

September 26, 2019

JWST observers can now use Mirage to produce realistic NIRCam and NIRISS simulated data to help them understand and prepare for JWST before launch.
What NIRISS Aperture Masking Interferometry Can Do for You

May 29, 2018

The Aperture Masking Interferometry (AMI) mode of JWST’s Near Infrared Imager and Slitless Spectrograph (NIRISS) offers a unique capability of high-resolution, moderate contract imaging at small separations.