The sun, live from my backyards. Seeing is much better in the morning. Last captures before I drive to the JASON solar event near Paris.

Stack of 10 images processed using #JSolEx

The sun, captured this morning, before the seeing degrades. Stack of 10 images captured using an SHG700 and processed using #JSolEx. Beautiful proms are visible around the disk.

In this blog post, I describe how I detected a potential Ellerman Bomb, and how I implemented an algorithm in #JSolEx to detect these: https://melix.github.io/blog/2025/05-19-jsolex-3-2-0.html

Image in CaH captured at lunch break from my backyards, between clouds and trees. Stack of 10 images selected from a set of 20 (most of them had clouds). Stacked and processed with #JSolEx 3.0.2. The clear disk version is off-band by 1 Å.

Super excited to present the new #JSolEx 3.0 release! https://melix.github.io/blog/2025/04-14-jsolex-3-0-0.html

https://www.youtube.com/watch?v=9mU_8j3lNcg

#astronomy #solar #shg #spectroheliograph

A Calcium H image of the sun, shot with an SHG700, a 560mm refractor, stacked and processed using #JSolEx.

Shows one of the longest filaments I have ever seen!

Sun, Helium D3, captured today with my SHG 700, stacked and processed using #JSolEx

A story where I describe how I accidentally discovered that the SHG 700 specs were incorrect: https://melix.github.io/blog/2025/03-11-jsolex-shg700.html

Thanks to Minh Nguyen for his support!

#JSolEx #spectroheliograph

Images of today's sun. Captured with a #SolEx and processed with #JSolEx. The Helium image is a stack of 3 images, processed in a single click. #solar

L'Astro Club Challandais organise des rencontres solaires le 7 juin. L'occasion de venir découvrir le Sunscan, avec @guillaumebertrand, le Sol'Ex avec Jérôme Bastardie, l'influence des optiques sur la photographie solaire avec Claude Schumacher. J'y serai aussi si vous souhaitez discuter #JSolEx .

https://bit.ly/rsv25

#solaire

In this blog post I explain how active region detection and labelling works in JSol'Ex. I hope you enjoy!

https://melix.github.io/blog/2025/02-01-jsolex-actve-areas.html

#JSolEx #Solar

The sun looks so nice in H-beta ! Captured at noon today using Sol'Ex and processed with #JSolEx

Les slides de ma présentation sur #JSolEx aux #RCE2024 sont ici !

http://cedric.champeau.free.fr/rce-2024-jsolex/

The Sun in H-alpha, lunch break musings.

Captured with Christian Buil's Sol'Ex, processed with #JSolEx

Du 9 au 11 novembre à la Cité des Sciences de la Vilette se tiendront les RCE 2024. Mieux qu'y assister pour la 1ère fois, j'aurai aussi le privilège d'y donner une session sur #JSolEx , mon logiciel de traitement des images solaires pour le #SolEx de C. Buil. Comment ne pas être stressé, se retrouver au milieu de grands noms de l'astronomie amateur, mais aussi des pros, moi qui ne fait que "bidouiller" dans mon coin. C'est un honneur mais aussi une grande pression !

https://www.afastronomie.fr/rencontres-ciel-espace

Quick lunch imaging. Today weather is "correct". Still high clouds, so image could be better, but taken in a few minutes :)
Processed with #JSolEx 2.6.3

#solar #SolEx #astrophotography

A timelapse of today's solar activity in H-alpha (the interval is not constant). That's 132GB of data processed with #JSolEx.

Un petit billet qui explique le processus de développement de #JSolEx à travers l'exemple du traitement d'une image Hélium.

https://melix.github.io/blog/2024/06-14-jsolex-helium-continuum.html

#solaire #SolEx

This video shows an animation of the sun, captured during 8 hours yesterday, using a #SolEx and processed with #JSolEx. This video shows the doppler effect (Unfortunately I messed up colors and switched blue with red, but you get it!).

JSol'Ex 2.4 is out. Here's a small video demonstrating the new single-click Helium line processing: https://youtu.be/FGUuBiJ8cWo

Download at https://melix.github.io/astro4j/latest/en/jsolex.html

#JSolEx #Solar #spectroheliograph