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AkaSci 🛰️AkaSci@fosstodon.org
Aug 31, 2026, 2:44 PM
The Roman Space Telescope will transmit science data back to Earth at a whopping 250 - 500 Mbps rate from a distance of 1.5 million km (5 light-seconds).
Average compressed data volume is expected to be about 1.4 TeraBytes per day.
The table below shows a comparison of the Ka-band comms system between Roman and JWST.
Note that an S-band bidirectional comms system is used at lower data rates for command, control and telemetry.
https://jwst-docs.stsci.edu/jwst-observatory-hardware/jwst-spacecraft-bus/jwst-communications-subsystem#gsc.tab=0
https://roman.ipac.caltech.edu/page/param-db
22/n
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Replies

AkaSci 🛰️AkaSci@fosstodon.org
Aug 31, 2026, 4:02 PM
FYI - trump rudely interrupted the Roman Space Telescope (RST) post-launch press conf yesterday and said via NASA director Isaacman’s phone - “Jared is doing a fantastic job, you are doing a fantastic job, and I’m supplying you all that money.”
What money? This White House has called for steep cuts in funding for NASA, NSF and science missions across the board, every year, including a 50% cut for RST.
Let's keep the electorate informed.
https://fosstodon.org/@AkaSci/11590296015193640923/n
https://arstechnica.com/space/2026/08/why-it-matters-that-president-trump-just-dialed-into-a-nasa-news-conference/
23/n
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AkaSci 🛰️AkaSci@fosstodon.org
Sep 1, 2026, 8:14 PM
NASA Roman Space Telescope updates:
The high-gain antenna was deployed over 4 minutes ending at 2::03 p.m. EDT Aug 31.
The aperture cover (sunshade) was deployed over 8 minutes ending at 6:05 a.m. EDT Sept 1.
The coronagraph was powered on over 55 minutes ending at 8:22 a.m. Sept 1.
The WFI Instrument will be powered on in an couple of weeks.
A 3-month period of test and calibration activities lies ahead.
https://science.nasa.gov/blogs/roman/2026/09/01/nasa-roman-space-telescopes-antenna-visor-deployed/
https://science.nasa.gov/blogs/roman/2026/09/01/nasa-romans-planet-imager-has-powered-on/
24/n
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AkaSci 🛰️AkaSci@fosstodon.org
Sep 1, 2026, 10:19 PM
At 22:12 UTC today Sept 1, about two and a half days after launch, the NASA Roman Space Telescope has traveled past the orbit of the Moon, 384,400 km from Earth.
🙌 🔭
https://eyes.nasa.gov/apps/solar-system/#/sc_roman_space_telescope
25/n
💬 1🔄 0⭐ 0
AkaSci 🛰️AkaSci@fosstodon.org
Sep 11, 2026, 1:35 AM
Here is a chance to adopt one of the 300 million pixels in the NASA Roman Space Telescope. Or rather to have it assigned to you.
🤔
Hurry - 448,864 pixels have already been claimed.
Roman is currently 940,000 km from Earth traveling at 1,710 km/h.
Register at https://science.nasa.gov/mission/roman-space-telescope/adopt-a-pixel/
You will get your pixel number as soon as you hit the Submit button.
26/n
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AkaSci 🛰️AkaSci@fosstodon.org
Sep 11, 2026, 1:47 AM
@ewen
^^^
💬 0🔄 0⭐ 0
AkaSci 🛰️AkaSci@fosstodon.org
Sep 15, 2026, 9:55 PM
NASA Roman Space Telescope update:
The Wide Field Instrument, with its 300-megapixel infrared camera, opened its eyes last Sunday and captured its first blurry picture of the cosmos.
The detector array is still not in its final configuration and is out of focus. The stars appear spread out over many pixels. Many other subsystems were tested before the image could be taken. The image will help the team in the alignment and calibration efforts in the coming weeks.
https://science.nasa.gov/blogs/roman/2026/09/15/nasa-activates-romans-primary-instrument-checks-out-coronagraph/
27/n
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AkaSci 🛰️AkaSci@fosstodon.org
Sep 15, 2026, 10:20 PM
The NASA Roman Space Telescope is currently ~1,110,000 km from Earth, traveling at a leisurely pace of 1,310 km/h.
It will be inserted in it final orbit around L2 in early December.
Instead of 10 years, Roman now has fuel for at least 22 years of potential science operations, thanks to a very accurate first mid-course correction and some extra fuel at launch.
https://eyes.nasa.gov/apps/solar-system/#/sc_roman_space_telescope
https://science.nasa.gov/blogs/roman/2026/09/14/fuel-savings-double-potential-lifetime-for-nasas-roman-mission/
28/n
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AkaSci 🛰️AkaSci@fosstodon.org
Oct 15, 2026, 11:56 AM
NASA’s Nancy Grace Roman Space Telescope team has completed a marathon of activities to fine-tune its Wide Field Instrument (WFI), the 300.8-megapixel camera.
Components such as the detectors, electronics, filter wheel, calibration system, alignment, thermal system, focus, ...
The secondary mirror position had to be adjusted by just ~4 μm.
As a result, WFI performance is nearly 30% better than predicted.
👏
https://science.nasa.gov/blogs/roman/2026/10/14/nasa-roman-team-checks-out-main-instrument-sharpens-telescopes-focus/
https://eyes.nasa.gov/apps/solar-system/#/earth
29/n
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Dr. Juande Santander-Velajuandesant@mathstodon.xyz
Aug 31, 2026, 7:25 PM
@AkaSci also, it’s not POTUS that supplies it, it’s Congress…
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Anny is not done growingannyr@fidelis.social
Sep 11, 2026, 2:55 AM
@AkaSci
Aw yiss, got myself a ✨pixel✨ !!!!
💬 0🔄 0⭐ 0
John Ulrikujay68@mastodon.world
Sep 11, 2026, 5:48 AM
@AkaSci Sweet!
💬 0🔄 0⭐ 0
ArtemisArtemis201@mstdn.social
Oct 16, 2026, 1:40 AM
@AkaSci I told this to my teammates and they were super pleased! They hadn't seen the press release yet. What a cool instrument
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aburka 🫣aburka@hachyderm.io
Sep 1, 2026, 12:31 AM
@AkaSci I can't even get 20 Mbps over wifi between devices 6 inches apart on my desk
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AkaSci 🛰️AkaSci@fosstodon.org
Sep 1, 2026, 1:02 AM
@aburka
You just need a bigger antenna 😉
https://science.nasa.gov/photojournal/nasa-deep-space-networks-new-goldstone-antenna-goes-online/
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