Visible Emission Line Coronagraph Latest News
Recently, scientists at the Indian Institute of Astrophysics (IIA) have collaborated with NASA to estimate the crucial parameters of a coronal mass ejection (CME) by using Visible Emission Line Coronagraph (VELC) payload onboard India’s Aditya-L1 mission.
About Visible Emission Line Coronagraph
- It is the primary payload of the Aditya-L1 Mission–India’s first mission to observe the Sun from a vantage point 1.5 million kilometres from the earth.
Features of Visible Emission Line Coronagraph
- It is an internally occulted solar coronagraph capable of simultaneous imaging, spectroscopy, and spectro-polarimetry close to the solar limb.
- It consists of a coronagraph, spectrograph, polarimetry module, and detectors, aside from auxiliary optics.
- It is built by the Indian Institute of Astrophysics (IIA) at its CREST (Centre for Research and Education in Science and Technology) campus at Hosakote, Karnataka.
Objectives of Visible Emission Line Coronagraph
- It will observe the solar corona, which is the tenuous, outermost layer of the solar atmosphere.
- VELC can image the solar corona down to 1.05 times the solar radius, which is the closest any such payload has imaged.
- It will analyze the coronal temperature, plasma velocity, density, etc.
- It will also study Coronal Mass Ejections (CMEs) and the solar wind.
Source: TH
Last updated on November, 2025
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Visible Emission Line Coronagraph FAQs
Q1. What is the primary objective of the Visible Emission Line Coronagraph (VELC)?+
Q2. What is unique about VELC's imaging capability?+
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