“Support for MIRI WFSS mode”- just something we’ve been working on, I guess it’s official now! 🫣🤗🌈🌈🌈
(Helpdesk is ready for your questions)🔭
(Helpdesk is ready for your questions)🔭
Version 5.0 of the #JWST ETC features added support for MIRI WFSS mode and 4 new NIRISS SOSS multi-stripe subarrays, easier sharing and better error messaging, and backend improvements to better support hundreds of simultaneous users. Get the details: ow.ly/xrs150WygRA
August 1, 2025 at 2:34 AM
“Support for MIRI WFSS mode”- just something we’ve been working on, I guess it’s official now! 🫣🤗🌈🌈🌈
(Helpdesk is ready for your questions)🔭
(Helpdesk is ready for your questions)🔭
Wildflower strips support birds and ground-dwelling arthropods during winter period regardless of mowing regime | www.sciencedirect.co... | Biological Conservation | #ornithology 🪶
Wildflower strips support birds and ground-dwelling arthropods during winter period regardless of mowing regime
Agri-environmental schemes, such as wildflower strips (WFS), can help to mitigate biodiversity loss caused by agricultural intensification. WFSs can p…
www.sciencedirect.com
November 6, 2025 at 11:30 AM
Wildflower strips support birds and ground-dwelling arthropods during winter period regardless of mowing regime | www.sciencedirect.co... | Biological Conservation | #ornithology 🪶
New #JWST 🔭 data release for target names: LHA-120-N-133.
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
June 4, 2026 at 12:59 AM
New #JWST 🔭 data release for target names: LHA-120-N-133.
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
New sky background images for #JWST's NIRISS Wide-Field Slitless Spectroscopy mode significantly improve the subtraction of the sky background in WFSS data. Read more: ow.ly/8U9e50WMevy
August 26, 2025 at 4:55 PM
New sky background images for #JWST's NIRISS Wide-Field Slitless Spectroscopy mode significantly improve the subtraction of the sky background in WFSS data. Read more: ow.ly/8U9e50WMevy
Great to bring Climate Trunk to the Oxford World Forum hosted by the @smithschool.ox.ac.uk.
Under the watchful eye of a fairly stern-looking former don, 20 Trunk visuals brightened up the wall a bit.
@climatetrunk.bsky.social @oxfordnetzero.bsky.social @skepticalscience.bsky.social #WFSS
Under the watchful eye of a fairly stern-looking former don, 20 Trunk visuals brightened up the wall a bit.
@climatetrunk.bsky.social @oxfordnetzero.bsky.social @skepticalscience.bsky.social #WFSS
September 30, 2026 at 8:54 AM
Great to bring Climate Trunk to the Oxford World Forum hosted by the @smithschool.ox.ac.uk.
Under the watchful eye of a fairly stern-looking former don, 20 Trunk visuals brightened up the wall a bit.
@climatetrunk.bsky.social @oxfordnetzero.bsky.social @skepticalscience.bsky.social #WFSS
Under the watchful eye of a fairly stern-looking former don, 20 Trunk visuals brightened up the wall a bit.
@climatetrunk.bsky.social @oxfordnetzero.bsky.social @skepticalscience.bsky.social #WFSS
New paper day! 🥂 Check out some beautiful spectra of Cosmic Noon galaxies with MIRI’s brand new wide-field slitless spectroscopy mode and what we can learn from the PAH features we can now detect very efficiently over a wide redshift range. arxiv.org/abs/2609.16239
Cosmic Noon Galaxies in the Hubble Ultra Deep Field with MIRI Wide-Field Slitless Spectroscopy
We present results from a survey of the Hubble Ultra-Deep Field using the Wide-Field Slitless Spectroscopic (WFSS) capability of the Mid-Infrared Instrument (MIRI) on JWST, demonstrating the capabilit...
arxiv.org
September 16, 2026 at 12:18 PM
New paper day! 🥂 Check out some beautiful spectra of Cosmic Noon galaxies with MIRI’s brand new wide-field slitless spectroscopy mode and what we can learn from the PAH features we can now detect very efficiently over a wide redshift range. arxiv.org/abs/2609.16239
New Webb image of NGC 1333 has been released in an article.
The article was published in August 22nd but only released today. With this gorgeous image, this tells me an official release of this image is coming soon :)
arxiv.org/abs/2408.126...
🔭 🧪
The article was published in August 22nd but only released today. With this gorgeous image, this tells me an official release of this image is coming soon :)
arxiv.org/abs/2408.126...
🔭 🧪
August 26, 2024 at 7:19 AM
New Webb image of NGC 1333 has been released in an article.
The article was published in August 22nd but only released today. With this gorgeous image, this tells me an official release of this image is coming soon :)
arxiv.org/abs/2408.126...
🔭 🧪
The article was published in August 22nd but only released today. With this gorgeous image, this tells me an official release of this image is coming soon :)
arxiv.org/abs/2408.126...
🔭 🧪
Paper day: "Improved Empirical Backgrounds for JWST NIRISS Image/WFSS Data Reduction" arxiv.org/abs/2410.00103 #astronomy
Improved Empirical Backgrounds for JWST NIRISS Image/WFSS Data Reduction
The Near Infrared Imager and Slitless Spectrograph (NIRISS) on the James Webb Space Telescope (JWST) is a versatile instrument for collecting imaging and wide-field slitless spectroscopy (WFSS) data f...
arxiv.org
October 2, 2024 at 10:14 AM
Paper day: "Improved Empirical Backgrounds for JWST NIRISS Image/WFSS Data Reduction" arxiv.org/abs/2410.00103 #astronomy
It’s #FursuitFriday before what’ll be a historic #WFS50 furbowl for FurLife: Pacific NW Furries tomorrow! We’re going to sell out all 50 lanes in the largest event in our host center’s 65-year history 🤯
We’ve had 900+ fursuiters join over the last 6 WFSs. So happy to put this on for the community!
We’ve had 900+ fursuiters join over the last 6 WFSs. So happy to put this on for the community!
August 16, 2024 at 3:16 PM
It’s #FursuitFriday before what’ll be a historic #WFS50 furbowl for FurLife: Pacific NW Furries tomorrow! We’re going to sell out all 50 lanes in the largest event in our host center’s 65-year history 🤯
We’ve had 900+ fursuiters join over the last 6 WFSs. So happy to put this on for the community!
We’ve had 900+ fursuiters join over the last 6 WFSs. So happy to put this on for the community!
Last week to submit your abstracts for the Wide-Field Slitless Spectroscopy workshop at @stsci.edu in August! Particularly exciting if you're interested in learning more about the new MIRI WFSS mode coming in Cycle 5, and VERY timely for the launch of Roman. 🔭
Surveying the Universe in 4D: Beating Cosmic Variance with Wide-Field Slitless Spectroscopy from HST, JWST, Euclid, Roman, and Beyond
www.stsci.edu
May 26, 2026 at 8:19 PM
Last week to submit your abstracts for the Wide-Field Slitless Spectroscopy workshop at @stsci.edu in August! Particularly exciting if you're interested in learning more about the new MIRI WFSS mode coming in Cycle 5, and VERY timely for the launch of Roman. 🔭
🤖 image processing for #JWST 🔭 data (HUDF-WFSS-Center). RGB Filters: 250, 200, 150
PI: Sun, Fengwu, program 07336. CRVAL: 53.160097, -27.782803
Credits: NASA, ESA, CSA, STScI.
PI: Sun, Fengwu, program 07336. CRVAL: 53.160097, -27.782803
Credits: NASA, ESA, CSA, STScI.
October 18, 2025 at 1:38 PM
🤖 image processing for #JWST 🔭 data (HUDF-WFSS-Center). RGB Filters: 250, 200, 150
PI: Sun, Fengwu, program 07336. CRVAL: 53.160097, -27.782803
Credits: NASA, ESA, CSA, STScI.
PI: Sun, Fengwu, program 07336. CRVAL: 53.160097, -27.782803
Credits: NASA, ESA, CSA, STScI.
New #JWST 🔭 data release for target names: HUDF-WFSS-Center.
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
October 19, 2025 at 12:22 AM
New #JWST 🔭 data release for target names: HUDF-WFSS-Center.
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
Version 5.0 of the #JWST ETC features added support for MIRI WFSS mode and 4 new NIRISS SOSS multi-stripe subarrays, easier sharing and better error messaging, and backend improvements to better support hundreds of simultaneous users. Get the details: ow.ly/xrs150WygRA
July 31, 2025 at 7:51 PM
Version 5.0 of the #JWST ETC features added support for MIRI WFSS mode and 4 new NIRISS SOSS multi-stripe subarrays, easier sharing and better error messaging, and backend improvements to better support hundreds of simultaneous users. Get the details: ow.ly/xrs150WygRA
For JWST Cycle 6, MIRI WFSS is also available as parallel, coordinated with NIRCam imaging or in pure parallel mode 🎉 For technical question please come to the JWST Helpdesk; happy to answer science questions on here!
September 16, 2026 at 12:18 PM
For JWST Cycle 6, MIRI WFSS is also available as parallel, coordinated with NIRCam imaging or in pure parallel mode 🎉 For technical question please come to the JWST Helpdesk; happy to answer science questions on here!
There is a lot more PAH science from MIRI WFSS on the way - at least 2 more that I know of!
September 17, 2026 at 2:05 AM
There is a lot more PAH science from MIRI WFSS on the way - at least 2 more that I know of!
New #JWST 🔭 data release for target names: ECLIPTIC-RA00, MIRI-XDF-new-tweak.
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
December 4, 2025 at 6:08 AM
New #JWST 🔭 data release for target names: ECLIPTIC-RA00, MIRI-XDF-new-tweak.
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
Credit: NASA, ESA, CSA, STScI.
Take a look at news_by_date.html
Surveying the Universe in 4D: Beating Cosmic Variance with Wide-Field Slitless Spectroscopy from HST, JWST, Euclid, Roman, and Beyond. Andreea Petric et. al. https://arxiv.org/abs/2609.23148
September 29, 2026 at 12:00 PM
Surveying the Universe in 4D: Beating Cosmic Variance with Wide-Field Slitless Spectroscopy from HST, JWST, Euclid, Roman, and Beyond. Andreea Petric et. al. https://arxiv.org/abs/2609.23148
These data were taken before the WFSS mode “real“, so all the reduction and calibration is done to a reasonable standard with what was publicly available (and my own code 👩💻). We are now ramping up the full suite of reference files & pipeline algorithms for this mode - improving all the time.
September 16, 2026 at 12:18 PM
These data were taken before the WFSS mode “real“, so all the reduction and calibration is done to a reasonable standard with what was publicly available (and my own code 👩💻). We are now ramping up the full suite of reference files & pipeline algorithms for this mode - improving all the time.
Final SPIE paper from Team MIRI is on the ArXiv today, led by Andreea Petric, describing the status of our new Wide-Field Slitless Spectroscopy mode arxiv.org/abs/2608.15430
Wide field Slitless Spectroscopy with JWST's MIRI
We present a snapshot of the ongoing efforts to obtain background-subtracted, wavelength-, and flux-calibrated spectra taken with the new Wide-Field Slitless Spectroscopy (WFSS) mode for the MIRI inst...
arxiv.org
August 18, 2026 at 3:40 PM
Final SPIE paper from Team MIRI is on the ArXiv today, led by Andreea Petric, describing the status of our new Wide-Field Slitless Spectroscopy mode arxiv.org/abs/2608.15430
Singular Value-based Atmospheric Tomography with Fourier Domain Regularization (SAFR). Lukas Weissinger et. al. https://arxiv.org/abs/2510.19542
October 23, 2025 at 4:56 AM
Singular Value-based Atmospheric Tomography with Fourier Domain Regularization (SAFR). Lukas Weissinger et. al. https://arxiv.org/abs/2510.19542
• In the Milky Way, JWST had studied star-forming areas. In the Small Magellanic Clouds, it found brown dwarf candidates.
• JWST has studied planet-forming disks around stars, studying their chemistry, dynamics, and longevity under different local conditions.
• JWST has studied planet-forming disks around stars, studying their chemistry, dynamics, and longevity under different local conditions.
January 18, 2025 at 10:18 PM
• In the Milky Way, JWST had studied star-forming areas. In the Small Magellanic Clouds, it found brown dwarf candidates.
• JWST has studied planet-forming disks around stars, studying their chemistry, dynamics, and longevity under different local conditions.
• JWST has studied planet-forming disks around stars, studying their chemistry, dynamics, and longevity under different local conditions.
Next: Stacey Bright, STScI Deputy Project Scientist for JWST
Observatory operations and efficiency are continuing to improve.
Planning tools, pipeline, and calibration reference file updates help to do things like avoid "claws" from scattered light from bright objects and correct for 1/f noise.
Observatory operations and efficiency are continuing to improve.
Planning tools, pipeline, and calibration reference file updates help to do things like avoid "claws" from scattered light from bright objects and correct for 1/f noise.
June 11, 2025 at 6:08 AM
Next: Stacey Bright, STScI Deputy Project Scientist for JWST
Observatory operations and efficiency are continuing to improve.
Planning tools, pipeline, and calibration reference file updates help to do things like avoid "claws" from scattered light from bright objects and correct for 1/f noise.
Observatory operations and efficiency are continuing to improve.
Planning tools, pipeline, and calibration reference file updates help to do things like avoid "claws" from scattered light from bright objects and correct for 1/f noise.