Thread on our new paper on arxiv today! We stumbled across a weird sinusoidal systematic that we think appears in every observation from the NIRISS instrument on JWST. We derive a correction and see how much it impacts exoplanet spectra. (1/N) #astro #exoplanets 🔭🧪 arxiv.org/abs/2606.11983

Calibration of an Analog-to-Digital Conversion Nonlinearity in JWST/NIRISS

We quantify an unusual flux-dependent systematic which is periodic in raw counts in flight data from the James Webb Space Telescope's Near Infrared Imager and Slitless Spectrograph (JWST/NIRISS), used...

arxiv.org

woke up early to watch something that'll cover the entire sky every three days

Come work with me at Macquarie University in Sydney! Job ad is live on AAS: aas.org/jobregister/...

Benjamin Pope@benjaminpope.bsky.social · 2y ago

I'm looking for a two year postdoc to work with me at Macquarie University building an Astrostatistics Research Group! We're interested in diverse applicants with previous experience in applying stats/AI/ML in astronomy, especially in relation to exoplanets/stellar astrophysics/instrumentation.

Jupiter rotation timelapse with lo (and shadow) transit! Taken Feb 8th from my backyard. Went out at 5 min intervals to capture a video. From each of these, the best 10% were stacked to produce a single frame (lucky imaging). 🔭C9.25, 📷 QHYII1585C #jupiter #astrophotography #astronomy

Astronomers Discover Planet Identical To Earth With Orbital Space Mirror theonion.com/astronomers-...

Come join the exoplanets team at UniSQ in Australia. Our team is seeking multiple PhD positions to understand the formation and evolution of planetary systems, involving ongoing programs on JWST, HST, and VLT. See AAS advert. Applications before March 07. aas.org/jobregister/...

Do you like binary stars? How about Wolf-Rayet stars? May I introduce you to my new chapter on what happens when you put WR stars in binaries... awesome colliding wind binaries! This should be a handy resource whether you're new to or knee-deep in the field! 🔭(1/?) arxiv.org/abs/2412.12534

Wolf-Rayet Colliding Wind Binaries

Wolf-Rayet stars embody the final stable phase of the most massive stars immediately before their evolution is terminated in a supernova explosion. They are responsible for some of the most extreme an...

arxiv.org

Anyone on the East bay know if the tsunami warning is being cancelled or not?

Milky Way over Double Arch at Arches National Park 20s ISO3200 x18, foreground and background aligned +stacked separately and combined 🔭🌌

Just got back from a trip to Arches National Park. Got a lot of shots that I'm excited to process soon! 🌌🔭

Deeply sad to hear of Prof. Fajan's passing--a deeply inspiring and dedicated educator at Berkeley. When I took his instrumentation class, COVID switched us to remote mid-semester. He ended up hand soldering Arduino kits and mailing them to us for the final project.

Benjamin Pope@benjaminpope.bsky.social · 2y ago

Devastated to learn that Joel Fajans has recently passed away - one of the most inspiring lecturers I ever had as a student. He was so creative and engaging. I think about his lecture on the physics of bikes every week!

C/2023 A3 (Tsuchinshan–ATLAS) and the Moon rising over Brisbane. I took this timelapse on 30th September while it was still in the early morning sky, with @astroryan.bsky.social. Reposting on bluesky for all the new people here! 🔭🌌

Applications are open til April 30 2025 for international applicants to do a Masters + PhD combo with me in astrostatistics at Macquarie University in Sydney! www.mq.edu.au/research/phd...

Finally got around to processing this short Milky Way timelapse I took a few months ago. I hope to take an extended version soon! 🔭🌌

Hello new followers! I'm Shishir, and I study all things exoplanets. Below is an artist's rendition of Gliese 12 b, a planet I co-led the discovery of this year. I plan to post more cool things I come across in my research. I also love astrophotography, so stay tuned for pretty space pictures! 🪐🔭

I've watched the light fade from my officemate's eyes every day through postdoc application season this year

Reposting with 🪐🔭 because I always forget

Shishir Dholakia@astroshishir.bsky.social · 2y ago

My new paper is out today on searching for stellar companions with pulsation timing in TESS photometry! arxiv.org/abs/2410.19729 Paper thread below ⬇️

My new paper is out today on searching for stellar companions with pulsation timing in TESS photometry! arxiv.org/abs/2410.19729 Paper thread below ⬇️

Venus, Comet A3 (Tsuchinshan-ATLAS), the Milky Way, and Zodiacal light (if you can spot it) all in one shot! Taken at Mount Kent observatory 🪐🔭

Comet Tsuchinshan Atlas has been quite a show over the last month. Some final shots before it fades away from us. One of the best comets I’ve see for a long time.

I got to see (and photograph) aurora for the first time!!! Particularly crazy that this was at -27° 🔭🪐

This was awesome to work on, and I'm very excited for the future of oblateness studies with JWST! 🪐🔭

Shashank Dholakia@astroshashank.bsky.social · 2y ago

My first PhD paper is on arxiv today! Rotating planets are slightly wider at their equator compared to the poles. Saturn in our Solar System (below, minus the rings), is about 10% oblate! Can we detect this shape difference in transits from JWST? (1/N) arxiv.org/abs/2410.03449

The tail of Comet Tsuchinshan-Atlas stretching dozen degrees, amazing in dark skies :) With @astroshishir.bsky.social

Comet A3 Tsuchinshan-ATLAS Timelapse ☄️ I've been photographing this comet for the past couple days, and I've been blown away by how bright it is. Can't wait to get back out for more tonight! Location: Queensland, Australia Equipment: Sony A7IV with 100mm lens, tracked. #astrophotography 🔭

Tsuchinshan-ATLAS growing a nice tail now. Still difficult to see without binoculars, so low to the horizon before sunrise.

Comet Tsuchinshan-ATLAS (top right) over the Brisbane skyline just before sunrise. Was visible in binoculars pretty easily! 48mm f3.2 2.0s ISO800, stack of 20 images 🔭🧪 #comet #astronomy #brisbane

Dr. Chelsea Huang and Dr. Andrew Vanderburg are hiring a postdoc interested in JWST data analysis! If you're interested in working at MIT Physics and UniSQ Australia, check out their job ad! careers.peopleclick.com/careerscp/cl...

Postdoctoral Associate

<p><strong>POSTDOCTORAL ASSOCIATE</strong>, <em>Kavli Institute for Astrophysics and Space Science (MKI) and University of Southern Queensland (UniSQ)</em>, to conduct research on the atmospheres of e...

careers.peopleclick.com

Perks of doing a PhD in astronomy: sometimes you can borrow a 0.8m (!!!) telescope just to take pretty pictures