NGC 7331

Image Title: 2025rbs in NGC7331

Copyright: Alessandro Ravagni

Date image was taken: August 08, 2025

Location: Romano d'Ezzelino

Data Acquisition Method: Personal Telescope Setup

Description and Details: A Type Ia supernova shines brightly in the galaxy NGC 7331, captured on August 8, 2025, near its maximum brightness.
This image is a combination of two images, taken with a Celestron C11HD at full focal length and an ASI2600MM camera. A comparison with a previous image from 2024 clearly reveals the transient.

Additionally, a low-resolution spectrum obtained on July 21 with a StarAnalyzer200 and the same setup (see my website) confirms the thermonuclear nature of the explosion, showing Si II, Fe II/III, and O I / Mg II features typical of Type Ia events.

Name: Alessandro Ravagnin

Website or Facebook Profile: https://astrotrex.wordpress.com/2025/08/14/sn2025rbs-in-ngc7331/#english