Get to know Hanle Observatory, the highest space observatory in India

Here’s what you need to do when you are in Ladakh – head over to Changthang Wildlife Sanctuary and find the Hanle Observatory. You want to do this because this will give you one of the best things you can get when in Ladakh, and that is, to experience the dark sky. The Hanle Observatory, also known as the Indian Astronomical Observatory, is located in Hanle village, at an altitude of approximately 4,500 metres (14,764 feet) above sea level.

The Hanle region is known for its exceptionally clear skies and low light pollution, making it an excellent location for stargazing and astronomical observations. The absence of significant light sources in the surrounding area contributes to the relatively dark skies in Hanle.


It's worth noting that the establishment of Dark Sky Reserves is a designation given by the International Dark-Sky Association (IDA).


A Dark Sky Reserve is a designated area that aims to preserve and protect the quality of its night skies by minimising light pollution. Dark Sky Reserves are typically located in areas with exceptional natural darkness and starry skies. And Hanle, with less than 1000 people living in the village, is the perfect area.


The Hanle Observatory, also known as the Indian Astronomical Observatory, has several unique features that make it special. The most important one is the altitude. At that high altitude, there are just many advantages for astronomical observations, such as reduced atmospheric interference and clearer skies.


The remote location and lack of significant light sources in the vicinity contribute to the excellent sky conditions, making it ideal for astronomical research and observations. Add to that the fact that the locals out there are all trained to be the perfect guides for tourists visiting the area to experience the dark sky and do some stargazing. Talk about sustainable tourism!


Things you need to know before visiting Hanle

• Artificial lighting: There are impositions on outdoor lighting and high beam vehicle headlights.
  
• Local wildlife: When in Hanle, respect the local wildlife and the ecosystem. And minimising light pollution is the first step.
  
• Get proper permits: Hanle is a protected area so you need to get the Inner Line Permit from the Deputy Commissioner’s Office in Leh.
  
• Stay at a homestay: As part of the astro tourism programme in the region, a number of homestays have been made available in Hanle. All of these homestays are equipped with telescopes that you can use to watch the night sky.
  

The Indian Astronomical Observatory may not be open to the public, but you can visit the Hanle Dark Sky Reserve.