Dr. Martha Boyer 🇺🇦

Astronomer on the JWST/NIRCam team at the Space Telescope Science Institute and (mostly) reformed twitter neglecter. Tweets are my own. (she/her)

[Dr. Martha Boyer 🇺🇦 @marthaboyer]

Astronomers using #jwst data will probably find this new JDox page useful: https://t.co/UpMrDoSR6g

[Dr. Martha Boyer 🇺🇦 @marthaboyer]

Exactly one year after we Commissioned NIRCam Coronagraphy, we've enhanced the mode for even more efficient science :) #JWST #NIRCam

[JWST Observer @JWSTObserver]

#JWST's NIRCam now allows for simultaneous coronagraph imaging in both short and long wavelengths. Get the details on this new capability: https://t.co/p7ALrYmaOI

[Dr Heidi B. Hammel @hbhammel]

The first paper from my #JWST GTO program has been officially published and it's awesome: water confirmed in a main-belt comet! Kudos to PI and paper lead Michael Kelley!

[Sarah Kendrew @sarahkendrew]

Professional jealousy is a thing in our field and it can be destructive. Esp as a finishing grad student or postdoc it can be HARD to manage your own career anxieties while watching your peers & friends succeed. You want to be happy for them, but it also sucks.

[Dr Sabine Bellstedt @SabineBellstedt]

Are your #JWST NIRCam images plagued by "wisp" artefacts? @aaronrobotham has got the solution to help you get rid of them!

See before-and-after example here 👇

[NASA Webb Telescope @NASAWebb]

Gold stars for you! 🌟

Shown here is M92, a cluster of thousands of stars located 27,000 light-years away in our Milky Way. One of Webb’s first science observations, this was taken as part of a program designed to help scientists make the most of Webb: https://t.co/9CHqHtEZlz

[NOVA | PBS @novapbs]

What has @NASA’s James Webb Space Telescope revealed so far?

Discover what scientists are learning about some of astronomy’s biggest questions.

“New Eye on the Universe” airs Wednesday Feb 22 on @PBS. https://t.co/DPdS3BDLpg

[Hubble @NASAHubble]

M92 was also one of @NASAWebb's first science observations, partially to test how well Webb observes stars that are densely packed together. Plus, Webb operates at longer wavelengths and is able to detect smaller, fainter stars in shorter amounts of time: https://t.co/c0yPDwomX6

[Jack Warfield @astronomypun]

Wow! It's a great day to read our new research note for @JWST_stars, where we show applications of DOLPHOT output morphology parameters and long-baseline colors to disentangle resolved stars from background galaxies in NIRCam images. Incredible! https://t.co/j0WNiCu2e5

[Dr. Martha Boyer 🇺🇦 @marthaboyer]

Here are some results from the stellar pops ERS team comparing the ETC predictions to PSF photometry from DOLPHOT. Something to keep in mind when preparing #JWST Cycle 2 proposals!
https://t.co/LG12ZrVwOd

[JWST Resolved Stellar Populations @JWST_stars]

The survey overview for our #JWST resolved stellar populations ERS program by Weisz, McQuinn, Savino, et al. is out today! In it, you can read about the science motivation & observing strategy and see the color-magnitude diagrams for M92, Draco II, & WLM. https://t.co/lxEvAVSfv8

[Dr. Martha Boyer 🇺🇦 @marthaboyer]

WOW! Check out those super red stars!

[Space Telescope Science Institute @SpaceTelescope]

Why, hello, gorgeous! #NASAWebb visited the iconic Pillars of Creation, capturing it in near-infrared light and delivering a kaleidoscope of color. Can you identify the newest stars? (Hint: They’re red and look like lava!) Details: https://t.co/kC4FOVnJnr

[JWST Observer @JWSTObserver]

An improved NIRCam flux calibration is now available. Get the details and find out how to use the new files: https://t.co/y1fToK7VjI

[Dr. Martha Boyer 🇺🇦 @marthaboyer]

@gbrammer Yeah, A2 is the outlier in these calibrations. We're still trying to track that down. But it's close. Here's the M92 CMD with the new calibrations:

[Dr. Martha Boyer 🇺🇦 @marthaboyer]

New #JWST NIRCam flux calibrations are now available in the pipeline! A news item should be out soon with a little more info. Note, we are continually improving calibrations -- subscribe here for updates: https://t.co/2mOurQDxeP

[gbrammer @gbrammer]

For #JWST enthusiasts, new NIRCam photometric calibration files are now available, if still a bit hidden, at https://t.co/CQS2eOVDXx. Thanks a lot @marthaboyer and others on the NIRCam team for getting this together.

[Dr. Martha Boyer 🇺🇦 @marthaboyer]

New #JWST NIRCam flux calibrations are now available in the pipeline! A news item should be out soon with a little more info. Note, we are continually improving calibrations -- subscribe here for updates: https://t.co/2mOurQVGsX

[gbrammer @gbrammer]

For #JWST enthusiasts, new NIRCam photometric calibration files are now available, if still a bit hidden, at https://t.co/CQS2eOVDXx. Thanks a lot @marthaboyer and others on the NIRCam team for getting this together.

[Sarah Kendrew @sarahkendrew]

JWST calibration nerds! Did you know you can sign up to a mailing list that alerts you of calibration file updates, per instrument? Instructions are here: https://t.co/u1Z5g3g1fN

[Dr. Martha Boyer 🇺🇦 @marthaboyer]

@sjc_astro We think the offsets just came from the way we did the flux calibration in Commissioning. New calibrations are coming very soon!

[Dr. Martha Boyer 🇺🇦 @marthaboyer]

Now that it's on the RNAAS website, you can access the table with zeropoints behind the figure 🙂

[Research Notes @AAS_ResNotes]

The JWST Resolved Stellar Populations Early Release Science Program. I. NIRCam Flux Calibration from @marthaboyer et al https://t.co/jJp406yFtz

[NASA Webb Telescope @NASAWebb]

That’s no star. It’s Neptune’s large, unusual moon, Triton! Because Triton is covered in frozen, condensed nitrogen, it reflects 70% of the sunlight that hits it — making it appear very bright to Webb. 6 of Neptune’s other moons (labeled) are also seen here.