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JWST Observer @jwstobserver.bsky.social · 9h

STScI received 3,203 GO proposals for 138,460 hours (with an additional 8,971 Pure and Coordinated parallel hours requested). This corresponds to an oversubscription of 18:1 with respect to the 7,700 hours offered in #JWST Cycle 6: ow.ly/uqAt50ZWSwG

Illustration of JWST highlighting its golden mirrors, with "Webb Space Telescope" to the right of the mirrors and stars in the background

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JWST Observer @jwstobserver.bsky.social · 08/10/2026

The JSTUC Community Forum 3 JWebbinar will be held on October 28th. The #JWST community will have the opportunity to provide valuable feedback to the JSTUC during this session. Get the details: ow.ly/whWx50ZVZ9T

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JWST Observer @jwstobserver.bsky.social · 01/10/2026

Due to technical issues, the #JWST Cycle 6 proposal deadline has been extended to 5 p.m. Eastern Time on October 1, 2026: ow.ly/3MpB50ZTvMb

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JWST Observer @jwstobserver.bsky.social · 10/09/2026

Build 13.0 of the #JWST Science Calibration Pipeline is now available. It fixes several outstanding known issues and continues development of multiple new observing modes. Read more: ow.ly/K3WB50ZM5LZ

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

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JWST Observer @jwstobserver.bsky.social · 09/09/2026

The #JWST Rocky Worlds DDT Program adds a new target, TOI-1452 b, following detailed Core Implementation Team analyses and a recommendation from the Science Advisory Council: ow.ly/ZclH50ZLg12

Artist's concept of rocky exoplanet GJ 486 b

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JWST Observer @jwstobserver.bsky.social · 04/09/2026

An APT update for #JWST Cycle 6 was released today. Cycle 6 proposers must upgrade to this new version. Get the details: ow.ly/FWyZ50ZJw3F

Cropped illustration of Webb's hexagonal mirrors showing different space images in each hexagon, with an illustration of the observatory in the center hexagon.

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JWST Observer @jwstobserver.bsky.social · 26/08/2026

The maximum visit duration is 6 days for #JWST Cycle 6 and a scientific justification must be provided for these long visits. Get the details: ow.ly/RYpx50ZFMWX

Illustration depicting zoomed in Webb mirror segments, each showing a different space image.

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JWST Observer @jwstobserver.bsky.social · 24/08/2026

Late breaking news: Get the details of a new #JWST Cycle 6 Call for Proposals policy update pertaining to eligibility for funding. ow.ly/ve7O50ZEOPq

Illustration of Webb's mirrors with each segment displaying a different space image, centered on a starry background.

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JWST Observer @jwstobserver.bsky.social · 19/08/2026

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

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JWST Observer @jwstobserver.bsky.social · 17/08/2026

#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

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JWST Observer @jwstobserver.bsky.social · 14/08/2026

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

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JWST Observer @jwstobserver.bsky.social · 12/08/2026

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

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JWST Observer @jwstobserver.bsky.social · 10/08/2026

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

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JWST Observer @jwstobserver.bsky.social · 05/08/2026

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.

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JWST Observer @jwstobserver.bsky.social · 28/07/2026

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

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JWST Observer @jwstobserver.bsky.social · 20/07/2026

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

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JWST Observer @jwstobserver.bsky.social · 17/07/2026

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.

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JWST Observer @jwstobserver.bsky.social · 09/07/2026

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

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JWST Observer @jwstobserver.bsky.social · 30/06/2026

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.

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JWST Observer @jwstobserver.bsky.social · 23/06/2026

Join us on July 7th for JWebbinar 50 - Hands-on Demo, Viewing, and Analyzing #JWST Data with Jdaviz 5.0. We'll cover major updates to Jdaviz, the data visualization tool: ow.ly/Aigi50ZfVvh

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JWST Observer @jwstobserver.bsky.social · 22/06/2026

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

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JWST Observer @jwstobserver.bsky.social · 18/06/2026

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

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JWST Observer @jwstobserver.bsky.social · 17/06/2026

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

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JWST Observer @jwstobserver.bsky.social · 17/06/2026

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

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JWST Observer @jwstobserver.bsky.social · 17/06/2026

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

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JWST Observer @jwstobserver.bsky.social · 14/06/2026

If you’re attending #AAS248 in person, stop by the STScI exhibitor booth during regular booth hours to discuss any of your #JWST questions with a mission expert.

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JWST Observer @jwstobserver.bsky.social · 12/06/2026

Join us from June 14 to June 18 at #AAS248 in Pasadena, CA. #JWST-related events include an update at the STScI Town Hall, science highlights at the Exhibitor Theater, and a plenary session. You can also visit us at the STScI Exhibitor Booth.

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JWST Observer @jwstobserver.bsky.social · 09/06/2026

Join us on June 25th for JWebbinar 49 - Hands-on Session for Custom #JWST WCS Alignment with JHAT. We'll provide an overview of the JWST/HST Alignment Tool (JHAT): ow.ly/wytP50Z9vIy

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JWST Observer @jwstobserver.bsky.social · 08/06/2026

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.

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JWST Observer @jwstobserver.bsky.social · 04/06/2026

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

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JWST Observer @jwstobserver.bsky.social · 01/06/2026

The astronomical community will receive updates on #JWST and have opportunities to interact with experts during the 248th AAS meeting from June 14 through June 18. Get the details: ow.ly/MHfj50Z6i9f

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JWST Observer @jwstobserver.bsky.social · 26/05/2026

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

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JWST Observer @jwstobserver.bsky.social · 20/05/2026

The Rocky Worlds DDT Data Challenge is designed to engage and help prepare the community to interpret rocky exoplanet atmosphere observations with #JWST. Get the details: ow.ly/BZOP50Z2gyK

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JWST Observer @jwstobserver.bsky.social · 19/05/2026

The May JSTUC meeting included presentations on #JWST Mission updates, Cycle 5 results, Cycle 6 plans, update on the Rocky Worlds DDT program, and various other updates. Read more: ow.ly/BRJn50Z1EqN

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JWST Observer @jwstobserver.bsky.social · 13/05/2026

Pipeline Build 12.3 offers substantial improvements to both the speed and default quality of NIRISS Single Object Slitless Spectroscopy (SOSS) data products. Get the details: ow.ly/ThRl50YZ2WU

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

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JWST Observer @jwstobserver.bsky.social · 12/05/2026

Join us for Webb Office Hours on May 14th and 28th at 11 am (ET) to get your data-related questions answered by #JWST experts: ow.ly/BXTO50V6VNJ

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JWST Observer @jwstobserver.bsky.social · 07/05/2026

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

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JWST Observer @jwstobserver.bsky.social · 30/04/2026

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

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JWST Observer @jwstobserver.bsky.social · 27/04/2026

Review the technical reports published by the #JWST Science and Operations Center teams in the past 5 months: ow.ly/NP8f50YQwlj

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JWST Observer @jwstobserver.bsky.social · 09/04/2026

Join us on April 22nd for JWebbinar 48 - NIRSpec and NIRISS Calibration Update. We'll provide an update on the performance and calibration quality of #JWST's NIRSpec and NIRISS instruments: ow.ly/5M6u50YGs5y

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JWST Observer @jwstobserver.bsky.social · 06/04/2026

Join us for Webb Office Hours on April 9th and 23rd at 11 am (ET) to get your data-related questions answered by #JWST experts: ow.ly/BXTO50V6VNJ

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JWST Observer @jwstobserver.bsky.social · 30/03/2026

Join STScI's Grants Administration team for a special budget JWebbinar for #JWST Cycle 5 PIs, Co-Is, and all staff involved in the budget proposal process: ow.ly/B5Zb50YARQf

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JWST Observer @jwstobserver.bsky.social · 27/03/2026

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

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JWST Observer @jwstobserver.bsky.social · 19/03/2026

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

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JWST Observer @jwstobserver.bsky.social · 17/03/2026

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

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JWST Observer @jwstobserver.bsky.social · 13/03/2026

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

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JWST Observer @jwstobserver.bsky.social · 10/03/2026

Join us on March 24th for JWebbinar 47 - NIRCam and MIRI Calibration Update. We'll provide an update on the performance and calibration quality of #JWST's NIRCam and MIRI instruments. ow.ly/v54u50YrMmh

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JWST Observer @jwstobserver.bsky.social · 09/03/2026

Join us for Webb Office Hours on March 12th and 26th at 11 am (ET) to get your data-related questions answered by #JWST experts: ow.ly/BXTO50V6VNJ

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JWST Observer @jwstobserver.bsky.social · 02/03/2026

The JWebbinars page has been reorganized by topic to make it easier to find previous sessions on the #JWST science process. Read more: ow.ly/VNMK50Yo50W

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JWST Observer @jwstobserver.bsky.social · 27/02/2026

The report from the 19th #JWST Users Committee (JSTUC) meeting held in December is now available and includes feedback, updates, and formal recommendations: ow.ly/aoj550YncT3

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

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