The Surya Siddhanta is an influential Sanskrit astronomical text that presents a comprehensive system of astronomy and astrology. It is believed to have been composed between the 4th and 5th centuries CE.

Astronomical workshops in ancient India served multiple purposes, including performing religious ceremonies, making astrological predictions, and developing methods for accurate timekeeping.

The Ujjain Observatory was a significant astronomical workshop in ancient India. It played a crucial role in the development of the Hindu calendar, which is still widely used in India today.

The Jantar Mantar is a remarkable astronomical observatory built by Maharaja Jai Singh II in the 18th century. It consists of a collection of architectural instruments used for astronomical observations.

The Nalanda Observatory, established in the 5th century CE, was one of the most advanced astronomical workshops in ancient India. It was known for its contributions to astronomy, mathematics, and astrology.

Aryabhata, a renowned astronomer and mathematician, was associated with the Takshashila Observatory in ancient India. He made significant contributions to astronomy, including the development of the heliocentric model of the solar system.

Astronomical instruments in ancient Indian workshops were constructed using a variety of materials, including stone, wood, and metal. The choice of material depended on the specific instrument and its intended purpose.

The Ujjain Observatory was renowned for its expertise in the construction of astrolabes, which were used for measuring the altitude of celestial bodies and determining the time of day.

The armillary sphere was a versatile instrument used in ancient Indian astronomical workshops for measuring the altitude of celestial bodies, determining the time of day, and predicting eclipses.

Varahamihira, a renowned astronomer and astrologer, was associated with the Ujjain Observatory in ancient India. He made significant contributions to astronomy, including the development of accurate methods for predicting eclipses.

The quadrant was primarily used in ancient Indian astronomical workshops for measuring the altitude of celestial bodies, which was essential for determining their positions in the sky.

The Jantar Mantar is renowned for its expertise in the construction of sundials, which were used to determine the time of day based on the position of the sun.

The astrolabe was a versatile instrument used in ancient Indian astronomical workshops for measuring the altitude of celestial bodies, determining the time of day, and predicting eclipses.

Bhaskara II, a renowned astronomer and mathematician, was associated with the Ujjain Observatory in ancient India. He made significant contributions to astronomy, including the development of accurate methods for calculating planetary positions.

The渾天儀 (浑天仪) was a versatile instrument used in ancient Chinese astronomical workshops for measuring the altitude of celestial bodies, determining the time of day, and predicting eclipses.