on the same night as the observation of AT2024zrq), I pointed the telescope to another target called AT2024zue which had just been the subject of a Discovery Report on TNS: https://www.wis-tns.org/object/2024zue/discovery-cert
I pointed the object (m=19!!!) by aligning the extension of the slit with a small star almost same declination as the target. Previously, 2 minutes of exposure via the guidance camera revealed a very very small blur at the supposed target's location. I noted the x,y position in pixels that I report on another star (guide star).
Target is about 65° high in the sky, hd43378 is the reference star.
Here is the first spectrum of 30 minutes
- sn2024zue_brute.png (245.47 KiB) Viewed 333 times
I reduced the data on day after and here is the 1D spectrum resulting of 5 fits of 30mn
- sn2024zue.png (8.08 KiB) Viewed 333 times
The continuum’s profile intrigues me and I submit the spectrum to Gelato. Here is the result with a 68 pc test.
- gelatoplot (17).png (174.04 KiB) Viewed 333 times
I send an email to Robin Leadbeater and attach the corresponding fits.
Shortly after, he answers me and there: Bingo!!!! The profile matches (SNID) with that of a sn type Ia. Wow, z=0,1!!!!
- _at2024zue_20241102_056_ESOU_comp0003_snidflux.png (87.55 KiB) Viewed 333 times
The TNS site is being updated by Robin https://www.wis-tns.org/object/2024zue
According to him, and if we leave it at that, this is probably the most distant supernova ever classified by an amateur.
Thank you for your great help and kindness Robin, thank you very much.
Here is a beautiful observation in ideal conditions, telescope re-collimated the day before, the rains of previous days have cleaned up the sky and total absence of turbulence for the last 3 days.
I spent two very exciting days and it is also a little bit of that, the magic of astro.
Cheers
Emmanuel