Comet that won't return for 80,000 years seen from India's highest observatory

The comet, visible to the naked eye, was captured in stunning detail against the backdrop of the Milky Way galaxy, with the High Altitude Gamma Ray (HAGAR) telescope in the foreground.

In Short

• Hanle Dark Sky Reserve is renowned for its Bortle-1 sky, the darkest on the scale
• The reserve has quickly become a haven for astronomers
• The comet appeared remarkably bright against the backdrop of Milky Way

In a spectacular celestial display, Comet C/2023 A3 (Tsuchinshan-ATLAS) graced the night sky above India's highest astronomical observatory in Hanle, Ladakh, on October 20, 2024.

The comet, visible to the naked eye, was captured in stunning detail against the backdrop of the Milky Way galaxy, with the High Altitude Gamma Ray (HAGAR) telescope in the foreground.

Hanle Dark Sky Reserve, renowned for its Bortle-1 sky (the darkest on the scale), provided an ideal setting for observing this cosmic visitor. The reserve, established in 2022, has quickly become a haven for astronomers and astrophotographers seeking pristine dark skies.

Ranjith Shaw, the astrophotographer who captured and processed the image. The comet appeared remarkably bright, benefiting from the moonless night and the exceptionally dark skies of Hanle with a contrast against the Milky Way galaxy.

Comet C/2023 A3, discovered in early 2023 by the ATLAS project and Purple Mountain Observatory in Nanjing, China, has been eagerly anticipated by the astronomical community. Its close approach to Earth in October 2024 has provided a rare opportunity for detailed observations.

The comet's visibility has also boosted astrotourism in the region. Visitors from across India and abroad have come to witness this celestial spectacle. It's not just about the comet; it's about experiencing the entire night sky in its full glory.

As Comet C/2023 A3 continues its journey through our solar system, the observations from Hanle will contribute to our understanding of cometary behaviour and composition, showcasing the importance of dark sky preservation for scientific research and public engagement in astronomy.