Sharpless 2-305 | NIRCAM #JWST
I've used every available filter trying to minimize the noise from the f/212n filter.
I'm looking at the image in detail and I'm speechless.
Proposal ID:4547 (www.stsci.edu/jwst/phase2-...)
Flickr: flic.kr/p/2s5tyEF
@markmccaughrean.bsky.social
Hey! Come work with me at NExScI!!! #jobs #exoplanets
JPL is hiring a new NExScI Executive Director to replace Chas, who will work with the Deputy Director (David Ciardi) and Chief Scientist (that's me!) in leading NExScI and our suite of impactful exoplanet programs.
www.jpl.jobs/job/R5526/Ex...
More on 1/f noise: jwst-docs.stsci.edu/methods-and-...
It has to do with SIDECAR ASIC.
There are two things you can do.
1. Either run the entire JWST pipeline (on python) on your PC. This did not work for me, as the pipeline did not want to install. jwst-pipeline.readthedocs.io/en/stable/ge...
Thank you for informing us!
Hello everyone!
I interviewed Assist. Prof. Wolfgang E. Kerzendorf from Michigan State University recently. He has a quite intriguing career with graduate works, observatories, supernovae, and also computational metascience. Check it out >>
youtu.be/6kq09EICVZk?...
#astrosci
The stunning WEAVE large IFU dataset. The ring nebula is clearly seen in the three pointings with WEAVE. Each pixel is also a spectrum, allowing them to probe the kinematics and chemistry of the ring.
JWST imaging of the Ring nebula! The iron bar feature is highlighted as contours in the centre of each image.
Michelle's second paper showed the discovery from the fabulous new WEAVE instrument in the Canary island. This IFU found a surprising bar of iron in the centre of the ring nebula. It doesn't seem to be a jet feature, so what is it?!? 🔭 ☄️ arxiv.org/abs/2601.10635
It is fantastic that we currently have similar algorithms with ZTF, too, and they are even more awesome than this, fantastic animation.
Dark clouds, star-forming regions, spiral arms and the nucleus in the center.
Central part of the Sculptor Galaxy (NGC 253) with #Hubble WFC3. It is a #starburst galaxy. 🔭 I created this image with calibration level 2 files
commons.wikimedia.org/wiki/File:NG...
A 5x6 array of astronomical images of debris discs, shaped like rings. Some are thin rings, others are wider and have gaps within them. Some of the discs are face-on and others more inclined. Most of the discs are orange except those on the rightmost column which are blue.
Not all rings are forged in fantasy, my precious!
For astronomers, they are found in space. This image shows debris discs captured by ALMA around stars. The two at the top-right told astronomers something very interesting. Find out what here: https://www.eso.org/public/images/potw2603a/
🔭 🧪
Yeah, you should get off Facebook and Instagram too...
Important.
Who doesn't love a little bit of Betelgeuse related news? In episode, I dove into some of the work to study this stars little companion 🔭🧪☄️
Transient phase space showing radio luminosity versus the product of timescale and observing frequency for different transient source classes, following Cordes et al. (2004). This is a figure from Murphy & Kaplan (2025) published in PASA. See the paper text (Figure 1 caption) for a full description.
The final version of our Dawes Review on the Dynamic Radio Sky is now published!
doi.org/10.1017/pasa...
Everything you need to know about what causes radio transients: how we detect them, the history of radio transient surveys, and what new widefield radio telescopes will do.
#RadioAstronomy 🔭☄️🧪
Color isn’t real the way you think it is.
It’s a private hallucination your brain creates from three cleverly overlapping sensors in your eyes.
The author explains it so cleanly it hurts (in a good way).
150th color post. Don’t miss it.🧪 ⚛️
#ColorPerception #Optics #Light #Science #VisionScience
Thread 🧵
An object's appearance starts with which wavelengths it reflects/absorbs under the incoming light.
But the key insight from author's piece (and vision science in general) is that color isn't 'in' the object or even 'in' the light spectrum itself.
1/5
My fav two things on this subject: pink and magenta colors are not "real", and there are negatives of each color, i.e. you look at a bright red object for a while and when you close your eyes same shape in negative colors has an afterimage in us.
Slender glowing ribbon of gas, tilted like a narrow pencil, stretches diagonally through the deep space. Delicate red and blue threads weave and shimmer along its sharp form, brightest at the upper-right tip. Distant stars dot the void behind, dominated by the red of ionized hydrogen.
What is this? Maybe a painting?
No!
It's about NGC 2736, or Pencil Nebula, a small part of the Vela Supernova Remnant. 🔭
It's thought to be formed from part of its shock wave, plowing through interstellar space at over 500,000 km per hour!
Image by Greg Turgeon & Utkarsh Mishra
🧪 #science 1/3
My bot reached 1k followers 🥳
It gets much more traffic than myself, with hundreds of likes and many shares. This makes me proud and almost not jealous at all.
But really, I am happy it inspires people and shows how great JWST is
An interesting way to disentangle signal from astronomical time series data including red noise. In its core weighted-wavelet transformations (drop->droplet, wave->wavele).
Cover of the Volume 3 Issue 1 January 2026 issue of Science Ascend, free to read free to submit non peer reviewed astrophysics journal. On navy background one can see journal name, its aim, issue contents, editor-in-chief, a simulated lightcurve as a plot and logo of the publishing company FIRE Araştırma Eğitim Ltd.
Volume 3 Issue 1 (January 2026) of Science Ascend (free to read, free to submit astrophysics journal) is out! In this issue, we discussed Astrobot JWST in Bluesky, Venus Clouds, Cosmic Strings and Singular Spectrum Analysis utilization in astronomy in 2025: fire-ae.org/ascend.html ☄️ #astrosci
Very intriguing!
A spiral galaxy from the Galaxy Zoo 2 project, classified by 44 volunteers.
A spiral galaxy, observed with the Apache Point 2.5m Telescope in the SDSS survey.
It is at redshift 0.018 (lookback time 257.3 million years) with coordinates (198.43538, 6.99216).
44 volunteers classified this galaxy in Galaxy Zoo 2.
Take off to the bright orange star Betelgeuse 🚀🌟
The star underwent an unprecedented dimming in late 2019 and early 2020. Observations later revealed that it was caused by a dusty veil shading the star, due to a drop in temperature on the star's surface.
https://www.eso.org/public/news/eso2109/ 🔭
All of these 21 things are good but especially check the 21st one :)
✨ Happy 21st Birthday Europlanet! It's been a long journey since the foundation on 1 January 2005, and we would like to thank you highlighting 21 things we are proud of: www.europlanet.org/21-years-of-...
Vienna has a lively astronomy department - consider applying to the below if you'd be interested in a four year (!!) position here: 🔭☄️
Quick quick!
A somewhat low-res image of a pair of widely-space interacting spiral galaxies. The galaxy in the top left has a bright disk seen at a slight angle so that it appears oval-shaped. Its spiral arms are fainter and hard to see. A thin, blue, clumpy line extends above the galaxy, perpendicular to its disk. The galaxy in the lower right has a strong bar and two spiral arms, forming a distinct S shape. The bar is brighter and yellow-ish. The arms are bluer and dotted with teal star clusters. Faint streams of blue material extend outwards from the ends of the spiral arms. The top stream almost connects with the galaxy in the top left. Several foreground stars are seen as bright points with eight diffraction spikes. The black background of space is dotted with stars and small background galaxies
Sloan Digital Sky Survey image of Arp 285, also known as NGC 2854 and NGC 2856.
This pair of galaxies is connected by a bridge of material, indicating a past interaction. The upper galaxy, NGC 2856, also has a clumpy tail perpendicular to its disk.
Credit: SDSS
Source
NGC 7094 planetary nebula with a spherical shape and blue color.
NGC 2371 planetary nebula with a shape like a candy. Blue color.
NGC 4071 planetary nebula with an oval shape. Green color with some blue in the middle.
Some planetary nebulae images I processed over the years:
NGC 7094, NGC 2371, NGC 4071. #PlanetaryNebulae
target: NGC-5775-IMAGER, released 2026-01-02, processed: C.Blanchard
🔭 JWST Program 5627 - Dust and Molecular Gas in Galactic Winds and Fountains: A JWST Survey of Nearby Highly Inclined Starburst and Active Disk Galaxies: www.stsci.edu/jwst-program...
target: NGC-5775-IMAGER, released 2026-01-02
NASA, ESA, CSA, STSci/ #JWST MIRI 1500, 1130, 560
