Q. Consider the following statements on Liquid Mirror Telescope:
- India’s first LMT is placed at ARIES.
- It uses aluminized glass as its primary mirror.
- It remains stationary.
Which of the statements given above is/are correct?
Answer:
Only 1 & 3
Notes:
- India’s first liquid-mirror telescope is established on the campus of the Devasthal Observatory of the Aryabhatta Research Institute of Observational Sciences (ARIES) in Nainital, Uttarakhand. It is known as the International Liquid Mirror Telescope (ILMT), it is the only liquid-mirror telescope operational anywhere in the world. It will also hold the unique tag of being the maiden liquid-telescope globally to be designed exclusively for astronomical purposes.
- A liquid mirror telescope, as its name suggests, uses a liquid, not aluminized glass, as its primary mirror. The liquid, usually mercury, is poured into a rotating dish.
- Unlike optical telescope, an LMT remains stationary as it cannot be turned and pointed in any direction. It “stares” at the zenith and watches the sky as the Earth rotates, thereby giving a view of different objects.