JWST Observer

@jwstobserver

JWST Observer is managed by STScI and provides astronomers with the most up-to-date information, news, and events related to observing with JWST.

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JWST Observer@jwstobserver· 3d

The new NIRSpec BOTS multistripe readout capability improves the bright limits for #JWST time-series observations. Read more: ow.ly/zAeX50ZBr5o

Line drawing of JWST on a background of the Tarantula Nebula observed by JWST using MIRI

JWST Observer@jwstobserver· 5d

#JWST's MIRI new readout pattern reduces the read noise by more than a factor of 2 with respect to SLOWR1: ow.ly/PcBZ50ZAv25

Line drawing of JWST on a background of the Cartwheel Galaxy observed by JWST using MIRI

JWST Observer@jwstobserver· 8d

New #JWST NIRISS SOSS multistripe subarrays offer a greatly improved bright limit and enable unsaturated observations of all currently known transiting exoplanet systems. Get the details: ow.ly/GfxX50ZzXel

Line drawing of JWST on a background of a composite image of Stephen's Quintet observed by JWST

JWST Observer@jwstobserver· 10d

NIRCam's new superstripe readout capability offers significant improvements to the brightness limits for imaging and time series observations with #JWST. Read more: ow.ly/AVPo50ZyUJR

Line drawing of JWST on a background of the Tarantula Nebula observed by JWST using NIRCam

JWST Observer@jwstobserver· 12d

STScI is requesting white papers from the community with compelling scientific ideas for Multi-Cycle Treasury programs that require large allocations of #JWST telescope time to complete. Get the details: ow.ly/KYet50Zy3Hg

Image representing JWST's science capabilities showing a magnified view of its mirrors with science-related images in each segment and an illustration of the telescope in the center segment

JWST Observer@jwstobserver· 17d

Learn about the online resources STScI offers to help you prepare your #JWST Cycle 6 proposal: ow.ly/xcM650ZwzOK

Image of a tablet device displaying the home page of JDox, the JWST User Documentation website, on a starry background.

JWST Observer@jwstobserver· 25d

The next two JWebbinars in August will focus on several topics related to Cycle 6 proposal preparation: ow.ly/VMjZ50ZtN31

JWST Observer@jwstobserver· Jul 20

The Cycle 6 Call for Proposals for the James Webb Space Telescope (#JWST) General Observer and Survey time and funding for Archival Research has been released. Read more: ow.ly/g9q150Zq3Ww

Magnified view of hexagonal shapes showing various space images illustrating JWST's science themes

JWST Observer@jwstobserver· Jul 17

Version 6.0 of the #JWST Exposure Time Calculator (ETC) includes new capabilities and features for all four instruments in support of the Cycle 6 Call for Proposals. Get the details: ow.ly/wOtr50ZoTRR

Line drawing of JWST on a background of the Southern Ring Nebula observed by JWST using NIRCam.

JWST Observer@jwstobserver· Jul 9

Publicly available and documented #JWST tools from the community help support proposal planning, data processing, and data analysis. Read more: ow.ly/ggbF50ZlYOw

Line drawing of JWST on a composite background of the Cosmic Cliffs observed by JWST

JWST Observer@jwstobserver· Jun 30

The report from the 20th #JWST Users Committee (JSTUC) meeting held in May is now available and includes feedback, updates, and formal recommendations: ow.ly/hRXO50ZiKeC

Line drawing of JWST on a composite image of the Cartwheel Galaxy observed by JWST.

JWST Observer@jwstobserver· Jun 22

The new "multistripe" capability of #JWST's NIRCam instrument allows for short wavelength grism time-series spectroscopy to be taken simultaneously with long wavelength spectroscopy. Learn more: ow.ly/jEHe50ZflUR

Line drawing of JWST on a background of the Deep Field observed by JWST using NIRCam

JWST Observer@jwstobserver· Jun 18

Remember to visit the STScI Exhibitor Booth at #AAS248 before you leave to speak with #JWST experts.

JWST Observer@jwstobserver· Jun 17

The STScI Town Hall at #AAS248, starting today at 12:45 pm (PT), will include an update on the status of the #JWST mission and the upcoming launch of the Roman Space Telescope.

Illustration showing the Webb Space Telescope on a space background, highlighting Webb's golden mirrors

JWST Observer@jwstobserver· Jun 17

Don't miss the #AAS248 Exhibitor Theater Talk by STScI Director Jennifer Lotz on Wednesday, June 17 at 9:30 am (PT). Her topic is "#JWST: This Is Just the Beginning."

Line drawing of JWST on a background of the Cosmic Cliffs observed by JWST using NIRCam

JWST Observer@jwstobserver· Jun 17

Eliza Kempton will lead a plenary session at #AAS248 on Wednesday, June 17 at 8 am (PT) titled “Common Worlds, Uncommon Complexity: Sub-Neptune and Super-Earth Atmospheres in the #JWST Era.

Promotional image for the 248th Meeting of the American Astronomical Society in Pasadena, California 14 to 18 June 2026

JWST Observer@jwstobserver· Jun 8

Join us for Webb Office Hours on June 11th and 25th at 11 am (ET) to get your data-related questions answered by #JWST experts: ow.ly/BXTO50V6VNJ

Promotional image for Webb Office Hours.

JWST Observer@jwstobserver· Jun 4

The Rocky Worlds DDT Community Involvement Initiative (CII) provides an open forum for the exchange of ideas and information for scientists working on Rocky World DDT data. Read more: ow.ly/7hGM50Z7Ei8

Artist's concept of rocky exoplanet GJ 486 b

JWST Observer@jwstobserver· May 26

A new set of #JWST MIRI Imager and Low-Resolution Spectroscopy (LRS) subarrays are designed to eliminate the primary source of electromagnetic interference (EMI) and facilitate instrument enhancements. Read more: ow.ly/ELnZ50Z4bSg

Line drawing of JWST on a background of Stephan's Quintet observed by JWST's MIRI instrument

JWST Observer@jwstobserver· May 7

Build 12.3 corrects significant IFU resampling artifacts near unresolved point sources: ow.ly/yqAn50YWaSg

Line drawing of JWST on a background of the Deep Field observed by JWST using MIRI

JWST Observer@jwstobserver· Apr 30

Build 12.3 of the Science Calibration Pipeline includes improvements to all four #JWST instruments. Read more: ow.ly/eOa150YSpUR

Line drawing of JWST on a background of the Southern Ring Nebula observed by JWST using MIRI

JWST Observer@jwstobserver· Mar 27

STScl's operations staff have revised and adjusted #JWST observing plans to accomodate Artemis II's April 1 launch date. Get the details: ow.ly/bkmE50YzKZN

Illustration highlighting golden mirrors of Webb Telescope in space

JWST Observer@jwstobserver· Mar 19

Save the date for the Rocky Worlds DDT Data Challenge and Workshop. Get the details: ow.ly/I0oM50YwrEq

JWST Observer@jwstobserver· Mar 17

View the repository of articles, images, videos, and visualizations available in support of #JWST public talks. Get the details: ow.ly/lABy50Yvr5h

JWST Observer@jwstobserver· Mar 13

The #JWST Cycle 5 General Observer Program selections have been made. Find out what JWST will study in its fifth year of science, which begins July 1, 2026: ow.ly/M4UQ50YtvP4

Illustration of Webb's hexagonal mirror segments each showing a different space image centered on a starry background

JWST Observer@jwstobserver· Jan 8

Brenda Frye will chair a special session — Extragalactic Time Domain Science with #JWST — today from 10 to 11:30 am in Room 224B at #AAS247 to discuss a DDT program of ~1000 hours to monitor the transient sky. The session is designed to engage the community and gather inputs.

Promotional image for the 247th meeting of the American Astronomical Society in Phoenix, Arizona 4-8 January 2026

JWST Observer@jwstobserver· Dec 3

The #JWST 2025 User Survey will close at midnight (ET) on December 12th. Please take this opportunity to provide your feedback: www.surveymonkey.com/r/DB93DMQ

JWST Observer@jwstobserver· Oct 6

Join us for Webb Office Hours on October 9th and 23rd at 11 am (ET) to get your data-related questions answered by #JWST experts. APT and ETC experts will be available for proposal preparation questions during the October 9th session: https://ow.ly/BXTO50V6VNJ

JWST Observer@jwstobserver· Oct 2

#JWST Cycle 5 proposals can take advantage of NIRCam and NIRISS multistripe capabilities. Read more: https://ow.ly/E41350X5OrY

JWST Observer@jwstobserver· Sep 23

Access all of the materials, including presentations, notes, exercises, and videos, covered during the 2025 JWST Summer School held in August: ow.ly/CW4150X0NQn