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
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AAPOD2 Title: NGC 7331
AAPOD2 Page Link: https://www.aapod2.com/blog/a-new-standard-candle-sn-2025rbs-in-ngc-7331
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