Astronomy Night at Mata Nacional da Machada

As part of the "Reserva no Outono" initiative, the Municipality of Barreiro is hosting an Astronomy Night (Noite de Astronomia) at the Mata Nacional da Machada.

This stargazing session offers a great opportunity to explore the night sky and bring astronomy closer to the local community in a natural setting.

Date & Time: Saturday, September 26, starting at 21:00
Location: Mata Nacional da Machada (Meeting point: Environmental Education Center / CEA)
Target Audience: Ages 10 and above
Admission: Free (advance registration required via Linha Verde: 800 912 070)

Source: Câmara Municipal do Barreiro

The Veil Nebula - NGC 6992 / NGC 6995

The Veil Nebula (also known as NGC 6992 / NGC 6995 for its eastern part, and NGC 6960 for its western part, in the NGC catalog) is a large and striking cloud of glowing gas in the constellation Cygnus. It is the remnant of a supernova explosion the death of a very massive star that occurred about 8,000 years ago. Through a telescope, it appears as delicate, colorful filaments spread across the sky, almost like a cosmic veil of light. These filaments are made of hot gases still expanding from the explosion, glowing as they interact with the surrounding space. Although it is about 1,500 light-years away, the Veil Nebula covers a large area of the sky, much bigger than the Moon, making it one of the most beautiful and photographed deep-sky objects, even for beginners in astronomy. Observed and imaged by Nuno at the AOSR Observatory . Integration: 87*300 in Ha 69*300 in OIII

Automated Detection of Supernovae in Astronomical Images

Automated Detection of Supernovae in Astronomical Images Automated detection of supernovae is an emerging field in observational astronomy, enabling the efficient and large-scale identification of new stellar explosions. This article presents an algorithm developed by us( AOSR ) to compare astronomical images and identify potential supernovae. After generating a comprehensive list of possible supernova candidates, the algorithm is automatically applied to each candidate for further analysis and verification. This ensures that each potential supernova is meticulously examined, increasing the accuracy and reliability of the detection process. Algorithm Workflow Loading and Normalizing Images : Initially, astronomical images are loaded from FITS files. To ensure comparability, the images are normalized to a common scale. Image Alignment : Using feature detection and description techniques, the images are aligned to correct for any shifts and distortions between them. Difference Calculatio...

SN2011dh, discovered in the famous Whirlpool Galaxy (M51)

The supernova SN2011dh , discovered in the famous Whirlpool Galaxy (M51) , has captivated astronomers and the public alike since its explosion in May 2011. This stellar event, classified as a Type II supernova, marked the dramatic end of a massive star's life cycle. Astronomers around the world turned their telescopes towards M51 , eager to observe and study the intricacies of this cosmic phenomenon. The supernova was first detected by amateur astronomer Tom Reiland and quickly confirmed by professional observatories. Its brightness and relatively close proximity to Earth made SN2011dh an exceptional opportunity for detailed observation and analysis. Researchers utilized a range of instruments, from ground-based telescopes to space observatories like the Hubble Space Telescope, to gather data across multiple wavelengths. One of the key insights from SN2011dh was the identification of its progenitor star. Pre-explosion images from the Hubble Space Telescope revealed a yellow sup...

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