About Indian Astronomical Observatory/ Hanle Dark Sky Reserve:
- The Indian Astronomical Observatory (IAO) or Hanle Observatory is a high-altitude astronomical observatory located in Hanle valley, UT Ladakh, India.
- It is operated by the Indian Institute of Astrophysics.
- Located atop Mt. Saraswati in the Nilamkhul Plain, at an altitude of 4500 metres, it is one of the highest and best sites in the world for optical, infrared and gamma-ray telescopes.
- The observatory holds the title of India's first dark-sky reserve, due to the minimal light pollution, reduced atmospheric interference, low atmospheric water vapour and exceptionally clear (cloudless) skies in the region. This makes it a prime location for astronomers to study the universe (galaxies, nebulae, stars gazing etc.)
Dark Sky Reserves:
- A Dark Sky Reserve is a designated area that aims to preserve and protect the quality of its night skies by minimising light pollution or restricting artificial light pollution. These reserves are recognised for their exceptional natural darkness and starry skies, and are specifically protected for scientific, natural, educational, and cultural purposes, primarily to advance astronomy.
- International Dark-Sky Association (IDA) is a U.S.-based non-profit organisation that designates places as International Dark Sky Places, Parks, Sanctuaries and Reserves, depending on the criteria they meet.
Why does Dark Sky preservation matter?
- Light pollution not only obscures our view of the stars but also disrupts ecosystems and affects human health. With over 80% of the world's population living under light-polluted skies, the need to preserve our night sky heritage has never been more urgent. Initiatives like the Hanle Dark Sky Reserve in Ladakh, India, underscore the importance of combating light pollution and promoting awareness about the significance of dark skies.
Key Fact:
- In January 2024, The Pench Tiger Reserve (PTR) in Maharashtra was certified as India’s first-ever Dark Sky Park (DSP) for protecting the night sky and preventing light pollution, making the facility ideal for astronomy enthusiasts.