Indian Observatories and Astronomy

Jantar Mantar is a collection of architectural astronomical instruments built in the 18th century by Maharaja Jai Singh II.

The Ujjain Observatory, located in the city of Ujjain, Madhya Pradesh, is believed to be the oldest astronomical observatory in the world. It was established around 500 BCE and was a major center for astronomical studies in ancient India.

The Nalanda Observatory is associated with the astronomer Aryabhata. He was a renowned mathematician and astronomer who made significant contributions to the field of astronomy. The Nalanda Observatory was a major center for astronomical studies during Aryabhata's time.

Man Mandir is an ancient Indian astronomical observatory located in the city of Varanasi, Uttar Pradesh. It was built by Raja Man Singh I in the 16th century and was used for astronomical observations and studies.

Jantar Mantar is an ancient Indian astronomical observatory located in the city of Delhi. It was built by Maharaja Jai Singh II in the 18th century and is a UNESCO World Heritage Site.

Vedhshala is an ancient Indian astronomical observatory located in the city of Mathura, Uttar Pradesh. It was built by Maharaja Jai Singh II in the 18th century and is a UNESCO World Heritage Site.

Mirzam Observatory is an ancient Indian astronomical observatory located in the city of Hyderabad, Telangana. It was built by Nawab Mir Nizam Ali Khan in the 18th century and is a UNESCO World Heritage Site.

Raja Bhoj Observatory is an ancient Indian astronomical observatory located in the city of Bhopal, Madhya Pradesh. It was built by Raja Bhoj in the 11th century and is a UNESCO World Heritage Site.

The Hubble Space Telescope (HST) is not a gamma-ray telescope. It is an optical and ultraviolet space telescope designed to study objects in visible and ultraviolet light.

The Swift Gamma-Ray Burst Mission is a space telescope specifically designed to detect and study gamma-ray bursts, which are brief, intense flashes of gamma rays.

The INTEGRAL Gamma-Ray Observatory is known for its wide field of view and ability to survey large areas of the sky, making it suitable for studying diffuse gamma-ray emission and large-scale structures.

The High-Energy Stereoscopic System (H.E.S.S.) is a ground-based gamma-ray telescope that was launched in 2018. It is designed to study the most energetic gamma rays, known as very high-energy gamma rays.

The Very Energetic Radiation Imaging Telescope Array System (VERITAS) is a ground-based gamma-ray telescope known for its ability to detect gamma rays with energies above 100 TeV.

The James Webb Space Telescope (JWST) is a space telescope launched in 2019. While it is not specifically a gamma-ray telescope, it has the capability to detect gamma rays in addition to other wavelengths of light, allowing it to study the early universe.

The Neutron Star Interior Composition Explorer (NICER) is a space telescope launched in 2017. It is known for its ability to detect and study gamma-ray pulsars, which are neutron stars that emit gamma rays.