Astronomy

megschwamb,
@megschwamb@mastodon.online avatar

Hubble moves to single gryo mode. This moves ensures the space telescope can keep on observing well reserving/saving one of the good functioning gyros for the future. https://science.nasa.gov/missions/hubble/nasa-to-change-how-it-points-hubble-space-telescope/

megschwamb,
@megschwamb@mastodon.online avatar
megschwamb,
@megschwamb@mastodon.online avatar

A nice summary here as well of the gyros, HST pointing, and one gyro mode. Looks like HST will not be able to observe moving objects that are closer to Earth than Mars' orbit. https://science.nasa.gov/mission/hubble/observatory/design/hubble-one-gyro-mode/

CosmicRami,
@CosmicRami@aus.social avatar
CosmicRami,
@CosmicRami@aus.social avatar

The people I work with are doing cool shit!

I finally got a chance to interview fellow PhD'er Sarah Caddy from our faculty about this excellent new research and looking at stars and satellites (like the ISS) DURING DAYLIGHT HOURS!

THey're using a telescope called 'The Huntsman' and look how many eyes it has 🕷️🔭

https://www.spaceaustralia.com/news/seeing-stars-day

#SpaceAustralia #Astrodon #Astronomy #Telescopes

📸 Caddy et al. 2024

DavidBflower,
@DavidBflower@mastodon.social avatar

The Sun and sunspots. 1433UT 3 June 2024. #AstroDon #Astronomy #Astro #Space #Astrophotography

mpi_grav,
@mpi_grav@social.mpdl.mpg.de avatar

The gravitational-wave detections continued over the weekend: @LIGO and Virgo observed two new possible signals from merging black hole binaries.

1️⃣ S240601aj is from a (luminosity) distance of 17.5 billion light years: https://gracedb.ligo.org/superevents/S240601aj/view/

2️⃣ S240601co is from a (luminosity) distance of 4.5 billion light years: https://gracedb.ligo.org/superevents/S240601co/view/

Overall, 105 probable signals have been observed in O4 so far.

Map of the entire sky showing the most likely regions of origin of the gravitational wave of the candidate signal S240601co. The orange spots cover a total area of about 1080 square degrees.

spacelizard,
@spacelizard@aus.social avatar

Australian Astronomical Optics (AAO) at Macquarie University is looking for a new director, details in the links below.

https://page.mq.edu.au/STF-Director-AAO-Macquarie.html

https://mq.wd3.myworkdayjobs.com/en-US/CareersatMQ/details/Director--Australian-Astronomical-Optics---Macquarie_R000015720-1

Please share with anyone you think might be interested.

#Astrodon #Astronomy #AstroJobs

cafuego,
@cafuego@misanthrope.social avatar

I ran out into the freezing cold my pajamas at 5:30 this morning to snap the waning crescent and meeting in the eastern sky.

That is now done, so I can stay in bed all following mornings.

cplberry,
@cplberry@mastodon.online avatar

Late night candidate

If real, the source is probably a binary black hole

False alarm rate 1 in 530 yr
GraceDB https://gracedb.ligo.org/superevents/S240601co/
GCN https://gcn.nasa.gov/circulars/36594
Rating 🍧🦭🪢

Initial three-dimensional volume localization. Distance around 1.4 Gpc

mattkenworthy,
@mattkenworthy@mastodon.social avatar

Astronomers who build instruments and publish in journals - please post the preprints on as well!

vicgrinberg,
@vicgrinberg@mastodon.social avatar

@mattkenworthy omg, this! Finding someone with SPIE access is always such a pain! (And also there is a high chance I'll never find out about your paper if it's not on arxiv...)

CosmicRami,
@CosmicRami@aus.social avatar

I'm so excited about this find!

Aussie astronomers have used Murriyang (Parkes radio telescope) to confirm the closest millisecond pulsar to the Galactic Centre!

Got to chat with CSIRO astronomer Marcus Lower (Lead Author of the paper) about this exciting new science.

https://www.spaceaustralia.com/news/millisecond-pulsar-lurking-galactic-centre

#SpaceAustralia #Astrodon #Pulsars #Astrophysics

📸 Heywood et al. 2022 / me

The Parkes radio telescope tilted on its side and slightly upwards. In the foreground are gardens and three poles with three flags upon them.

vicgrinberg,
@vicgrinberg@mastodon.social avatar

Did you know that it's actually NASA/ESA/CSA James Webb Space Telescope? Even though it is often referred to as "NASA" only.

European Space Agency #ESA has contributed the NIRSpec instrument, half of the MIRI instrument, and the launch (including the payload adapter & launch site services) and has 15 scientists working at the science and operations center. #CSA, the Canadian Space Agency, has contributed the NIRISS instrument.

Graphic from launch kit: https://www.esa.int/Science_Exploration/Space_Science/Webb/James_Webb_Space_Telescope_launch_kit

#JWST #astrodon

schnedan,
@schnedan@social.tchncs.de avatar

@vicgrinberg the big eclipse in the US lately, there have been reports about NASA teams visiting schools about a year prior to the event, educating and preparing people and did a great job at the actual event...

if ESA does something similar,... its something I never really heard of

vicgrinberg,
@vicgrinberg@mastodon.social avatar
franco_vazza,
@franco_vazza@mastodon.social avatar

As expected, there really was tense discussion yesterday.

Like, someone shouted at me during coffee break, with a lot of "f**k" involved and people around like 😱 .

After, he apologised and we decided we can still be friends outside of astronomy.👍

Also played table tennis vs the one who gave a talk explicitly to dismantle my conclusions of the day before.
Scientists are like 🤷‍♂️

I'd put all this into the basket of the good human interactions I had in life!

franco_vazza,
@franco_vazza@mastodon.social avatar

#acedemic #academicchatter

Fun things that can happen at a conference: tomorrow there will be a heated discussion about the correct way to remove a foreground from an extragalactic observation - the sort of life and death fights you have in astronomy 😅

But guess how many experts in the actual observation and foreground modelling are present at this conference:

ZERO.

So chairs are likely going to be thrown for nothing...

And I blame magnetic fields for this.

#astrodon #astronomy

Rhodium103,
@Rhodium103@mastodon.social avatar

@franco_vazza
Sounds amazing. I haven't seen a good fistfight at a conference in years.

philo,
@philo@astronomy.city avatar

The M104 Sombrero Galaxy. 29 million light years away! I love side-on type galaxies. They somehow appear more vast.

Celestron C8 with F6.3 reducer.
ZWO183MC Camera
2.5 hours of 4-min exposures
Processed in DSS, PixInsight, Lightroom and Topaz Denoise.

franco_vazza,
@franco_vazza@mastodon.social avatar

Cool to have the same colleagues arguing about a question they already debated a year ago (conference I organised back then) , getting to the same standstill, as if they had no chance of exchanging mails in a year 🙄

Pepijn,
@Pepijn@mastodon.online avatar

@franco_vazza Any reason for this? Is it just being performative?

franco_vazza,
@franco_vazza@mastodon.social avatar

@Pepijn no no, I think they really thing it's the most important issue in the world then they ask, but somehow then the talk time is over, they forget about it until next year 😅

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