#ESO:
"
Einzigartige Form einer Sternexplosion nur einen Tag nach ihrer Entdeckung ermittelt
"
".. VLT .. hat einen Stern kurz nach seinem explosiven Tod beobachtet .. als d. Druckwelle d. Sternoberfläche durchbrach. Zum ersten Mal konnten Astronominnen u. Astronomen d. Form d. Explosion in ihrer frühestmöglichen, kurzlebigen Phase bestimmen. .."

https://www.eso.org/public/germany/news/eso2520/

12.11.2025

#Astronomie #Astrophysik #FORS2 #NGC3621 #SN2024ggi #Spektropolarimetrie #Stern #Sternentwicklung #Supernova #VLT

Got another 1.5 hours of light last night from nearby(ish) galaxy NGC 3621 which features the recent supernova #SN2024ggi

Have now been grabbing light from this event over a few months and can see its colour/flux temporal evolution.

Caught it with VIVID’s extreme light pollution too! (VIVID is a very popular festival of light here in Sydney in which light pollution increases by several orders of magnitude!)

#Astrophotography #Astrodon #Supernova #NGC3621

Hey! Turns out I have a photo of #NGC3621 last 6th of March. That's prior to the detected supernova (Cheers @CosmicRami !)

Left side is the my photo, right is the one with the supernova.

#astrophotography #sydney #australia

Here’s a second night of imaging #SN2024ggi using Seestar S50 from my backyard.

Got about 2 hours of data but then NGC 3621 crossed the meridian near the zenith and things started failing.

Still, pretty darn good for a 5cm aperture. Saturated the colours a bit to highlight blue-white hues of supernova!

#Supernova #astrophotography #NGC3621 #astronomy #astrodon

Has anyone with a #DwarfII imaged #NGC3621 before a couple of days ago? If so, please share your stacked-out-of-camera image here, please.

I am looking for comparison images to match up against my post-supernova shot from tonight.

Thanks @CosmicRami for the heads up.

#Astrodon #astronomy #supernova #astrophotography

🚨 A STAR HAS DIED! ⭐💥

And I just happened to catch it from my city light-polluted backyard, using a 5cm aperture SeestarS50!

Check it out ... on the left is my image (only 25 mins of data). The cross hairs indicate a 'new star' appearing in galaxy NGC 3621. The right image is from Stellarium and I have annotated where the new star appears, and how it was not there before.

This is a type II supernova, so a massive star's core collapsed and triggered off an extremely violent explosion that we are seeing 22 million years later.

It likely formed a neutron star or pulsar!

It is incredibly bright and I encourage everyone to turn their telescopes towards it and get data / light curves!

#astrophotography #Astrodon #NGC3621 #Supernova #AT2024ggi

*** SUPERNOVA ALERT ***
🔭📸🚨

Astrophotographers/astronomers with 'scopes capable of low-res spectrography:

Turn your telescopes to NGC 3621, a field galaxy *only* 7 MPC away! Supernova alert issued with progenitor data available. ⭐💥

NGC 3621 (aka the Frame Galaxy or Southern Cross Galaxy) is fairly bright and if you are around the same latitude as Sydney (many southern cities) it gets very near zenith around 9 - 10pm local time, so an easy and bright target.

More info:

https://www.wis-tns.org/astronotes/astronote/2024-100

https://www.wis-tns.org/astronotes/astronote/2024-102

Here's the galaxy shot prior by Joe DePasquale /ESO.

#Supernova #Astronomy #Astrodon #Galaxy #NGC3621

Southern Cross Galaxy
(#NGC3621)

Using quadband filter, and I let NINA take photos overnight while I sleep. Unfortunately, only 2.5 hours of 4 was usable (according to DSS)

#astrophotography
#Sydney