Indian Institute of Astrophysics भारतीय खगोलभौतिकी संस्थान

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Indian Institute of Astrophysics                 भारतीय खगोलभौतिकी संस्थान The official page of the Indian Institute of Astrophysics (IIA), located in Koramangala, Bengaluru. A 1.3 m telescope named after Prof. J. C.

The Indian Institute of Astrophysics traces its origin to William Petrie, an enlightened officer of the East India Company, who in 1786 began observations of the meridian transit of stars from Madras, mainly for maritime purposes. This in a short period of ten years, blossomed into the Madras Observatory. The Madras Observatory, especially under the leadership of N.R. Pogson, made tremendous progress, diversifying its focus to the astronomical studies of planets, asteroids, the sun, solar eclipses and variable stars. Teams from the Observatory were among the first to observe the Helium line at the solar eclipse in 1868, visible from Guntur in South India. Around the end of the 19th century, the Madras Observatory was shifted to Kodaikanal. The Kodaikanal Observatory became famous in
its own right with pioneering contributions such
as the Evershed Effect discovered in 1909. The
work at Kodaikanal continues without any break
even today and the observatory holds an archive of spectroheliograms which are recorded daily. In 1971, the organization became an autonomous academic institution devoted to astronomy, astrophysics and allied topics, under the directorship of Professor M.K.Vainu Bappu. It is now a premier Institute in the country specialized in Astrophysics and it is fully funded by the Department of Science and Technology, Government of India. Several new major facilities have been added
during the last four and half decades. They include: the 2.34 m Vainu Bappu Telescope (VBT) at Kavalur, the 2-m Himalayan Chandra Telescope (HCT) at Hanle and the Radio Heliograph at Gauribidanur. Recent initiatives at Hanle include: commissioning of a High Altitude Gamma Ray (HAGAR) telescope array and setting up of a Major Atmospheric Cerenkov Experiment (MACE) telescope by BARC jointly with TIFR and IIA. Bhattacharyya was installed at Kavalur and commissioned in 2014. The Ultra-Violet Imaging Telescope (UVIT) system, developed by the Institute jointly with national laboratories, was calibrated in a specially established facility, the M.G.K.Menon Laboratory, at the Institute’s campus in Hosakote. The system is
integrated on to the ASTROSAT satellite which is put into the orbit by ISRO on 28 September, 2015.

भारतीय ताराभौतिकी संस्थान देश का एक प्रमुख संस्थान है, जो खगोल ताराभौतिकी एवं संबंधित भौतिकी में शोधकार्य को समर्पित है। इसका उद्गम मद्रास (चेन्नै) में 1786 में स्थापित की गई एक निजी वेधशाला से जुड़ा है, जो वर्ष 1792 में नुंगम्बाकम में मद्रास वेधशाला के रूप में कार्यशील हुई। वर्ष 1899 में इस वेधशाला को कोडैकनाल में स्थानांतरित किया गया। 1971 में कोडैकनाल वेधशाला ने एक स्वायत्त संस्था भारतीय ताराभौतिकी संस्थान का रूप ले लिया। संस्थान का मुख्यालय कोरमंगला, बेंगलूर में अपने नए परिसर में वर्ष 1975 में स्थानांतरित हो गया। विज्ञान एवं प्रौद्योगिकी विभाग के अवलंब से संचालित यह संस्थान आज देश में खगोल एवं भौतिकी में शोध एवं शिक्षा का एक प्रमुख केन्द्र बन गया है। संस्थान की प्रमुख प्रेक्षण सुविधायें कोडैकनाल, कावलूर, गौरीबिदनूर एवं हान्ले में स्थापित हैं।
एक शताब्दी से भी अधिक समय से कोडैकनाल वेधशाला प्रेक्षणात्मक सौर एवं वायुमंडलीय भौतिकी में सक्रियता का मुख्य केन्द्र रही है। कावलूर स्थित वेणुबप्पू वेधशाला 1960 के दशक से रात्रिकालीन खगोल की मुख्य प्रकाशिक वेधशाला रही है। यहां अनेक दूरदर्शी कार्यशील हैं जिनमें प्रमुख हैं - 2.34 मीटर वेणुबप्पू दूरदर्शी। गौरीबिदनूर रेडियो वेधशाला में एक डेकामीटर तरंग रेडियो दूरदर्शी विन्यास एवं रेडियो होलियोग्राफ स्थापित है।
दक्षिण पूर्व लद्दाख के हान्ले नामक स्थान में स्थापित की गई नई उच्च उत्तुंग भारतीय खगोल वेधशाला ने संस्थान की रात्रिकालीन खगोल संबंधी सुविधाओं में वृद्धि की है। यहां वर्ष 2001 से 2 मीटर व्यास का हिमालयन चंद्रा दूरदर्शी कार्यरत है। सात इकाइयों वाला एक उत्तुंग गामा किरण दूरदर्शी भी हान्ले में हाल ही में स्थापित किया गया है।
बेंगलूर परिसर में एक विशाल पुस्तकालय, संगणक केन्द्र, भौतिकी एवं इलेक्ट्रॉनिकी प्रयोगशालायें, प्रकाशिकी तथा यांत्रिक कार्यशालायें विद्यमान हैं जो संस्थान के सक्रिय उपकरण विकास कार्यक्रम को ठोस अवलंब देती है।

The National Large Solar Telescope (NLST) Science Meeting, held at the Indian Institute of Astrophysics from 9–11 Septem...
23/09/2026

The National Large Solar Telescope (NLST) Science Meeting, held at the Indian Institute of Astrophysics from 9–11 September 2026, brought together around 150 researchers and students from across India, with about 100 participants joining in person in Bengaluru and 50 participating online.

The meeting focused on the science goals, observational capabilities, instrumentation, and future scientific direction of the NLST. Three days of engaging discussions, new ideas, and a shared vision for the future of solar astronomy in India. More importantly, the discussions went beyond key science cases. Participants explored how these scientific goals can be translated into quantitative observational requirements, how first-light backend instruments can be refined and developed to meet those needs, and how NLST can work synergistically with existing and upcoming ground- and space-based observatories. This was an important step towards building a strong and collaborative science community for India’s next-generation solar telescope.

Department of Science and Technology, Government of India
Annapurni Subramaniam

செப்டம்பர் 14 ஆம் தேதி மாலையில், மத்திய மற்றும் தென்னிந்தியாவில் உள்ள பார்வையாளர்களுக்கு, பிறை நிலவு வெள்ளிக் கோளின் முன...
12/09/2026

செப்டம்பர் 14 ஆம் தேதி மாலையில், மத்திய மற்றும் தென்னிந்தியாவில் உள்ள பார்வையாளர்களுக்கு, பிறை நிலவு வெள்ளிக் கோளின் முன்னால் கடந்து செல்லும்.

Explainer video on the lunar occultation of Venus on 14 Sept, in Tamil

https://www.youtube.com/shorts/xfOHxj-63-M

Department of Science and Technology, Government of India
Annapurni Subramaniam

செப்டம்பர் 14 ஆம் தேதி மாலையில், மத்திய மற்றும் தென்னிந்தியாவில் உள...

*ಚಂದ್ರನಿಂದ ಶುಕ್ರ ಗ್ರಹದ ಆಚ್ಛಾದನೆ :14 ಸೆಪ್ಟೆಂಬರ್ 2026*ಸೆಪ್ಟೆಂಬರ್ 14ರ ಸಂಜೆ, ಮಧ್ಯ ಮತ್ತು ದಕ್ಷಿಣ ಭಾರತದಲ್ಲಿ ಚಂದ್ರ, ಶುಕ್ರ ಗ್ರಹದ ...
12/09/2026

*ಚಂದ್ರನಿಂದ ಶುಕ್ರ ಗ್ರಹದ ಆಚ್ಛಾದನೆ :14 ಸೆಪ್ಟೆಂಬರ್ 2026*

ಸೆಪ್ಟೆಂಬರ್ 14ರ ಸಂಜೆ, ಮಧ್ಯ ಮತ್ತು ದಕ್ಷಿಣ ಭಾರತದಲ್ಲಿ ಚಂದ್ರ, ಶುಕ್ರ ಗ್ರಹದ ಮುಂಭಾಗದಲ್ಲಿ ಹಾದುಹೋಗಲಿದೆ.

ಹೆಚ್ಚಿನ ಮಾಹಿತಿಗಾಗಿ ವೀಡಿಯೊವನ್ನು ವೀಕ್ಷಿಸಿ!

https://www.youtube.com/shorts/pKKsUjvZvU0

Department of Science and Technology, Government of India
Annapurni Subramaniam
Platform for Astronomy Communicators in Karnataka

ಚಂದ್ರನಿಂದ ಶುಕ್ರ ಗ್ರಹದ ಆಚ್ಛಾದನೆ :14 ಸೆಪ್ಟೆಂಬರ್ 2026ಸೆಪ್ಟೆಂಬರ್ 14ರ ಸ...

Lunar occultation of Venus: 14 Sept 2026The Moon will pass in front of the planet Venus, on the evening of 14 September,...
11/09/2026

Lunar occultation of Venus: 14 Sept 2026

The Moon will pass in front of the planet Venus, on the evening of 14 September, for central & southern India.

They will pass close to each other as seen from other regions.

Check out the video for more info!

https://www.youtube.com/shorts/bnWIHiDU4Lw

Department of Science and Technology, Government of India
Annapurni Subramaniam
ASI POEC

On the evening of 14 September, the crescent Moon will pass in fron...

**Livestreams for 28 Aug partial lunar eclipse**The eclipse cannot be seen from India. The timings listed below are in I...
27/08/2026

**Livestreams for 28 Aug partial lunar eclipse**

The eclipse cannot be seen from India. The timings listed below are in Indian Standard Time when you can see the eclipse in the Youtube livestreams linked here.

•⁠ ⁠Penumbral eclipse begins : 6:54 AM
•⁠ ⁠⁠Partial eclipse begins: 8:03 AM
•⁠ ⁠⁠Maximum eclipse (96.2%): 9:43 AM
•⁠ ⁠⁠Partial eclipse ends: 11:22 AM
•⁠ ⁠⁠Penumbral eclipse ends: 12:32 PM

(1) Timeanddate.com - https://www.youtube.com/watch?v=ktP8-OX4Iug

(2) The Virtual Telescope Project - https://www.youtube.com/watch?v=3zIBswePr4I

(3) Griffith Observatory - https://www.youtube.com/watch?v=TqDDrucjseM

(4) Oukaimeden Observatory - https://teams.live.com/meet/9356663016797

For more information on eclipse timings, please refer to https://www.timeanddate.com/eclipse/map/2026-august-28

Eclipses are purely natural phenomena and cannot cause harm to living beings!

Interactive map showing where the partial lunar eclipse of Aug 28, 2026 is visible—with local times and average cloud cover for any location.

National Space Day was celebrated at IIA's Vainu Bappu Observatory Kavalur yesterday as an Open Day with 650+ visitors. ...
23/08/2026

National Space Day was celebrated at IIA's Vainu Bappu Observatory Kavalur yesterday as an Open Day with 650+ visitors.

Telescope tours, LN2 and rocket launch demos, and night sky viewing were organised by our staff for them!

Department of Science and Technology, Government of India
Annapurni Subramaniam
Vainu Bappu Observatory
ISRO - Indian Space Research Organisation

We were extremely happy to have hosted the Parliamentary Standing Committee on Science & Technology, Environment, Forest...
21/08/2026

We were extremely happy to have hosted the Parliamentary Standing Committee on Science & Technology, Environment, Forest & Climate Change today, led by the Chairperson, and present our research, our future projects and our legacy.

The Committee was received by Director IIA and other faculty members at our Headquarters in Bengaluru, followed by a presentation and discussions.

The Committee visited our Optics Lab to see India’s contributions to the Thirty Meter Telescope project through the ITCC. They also visited the IIA Archives, home to a remarkable collection of scientific artefacts dating back to the 1700s.

Department of Science and Technology, Government of India
Dr. Medha Kulkarni
Dr Jitendra Singh
Annapurni Subramaniam

21/08/2026
A beautiful 22 degree Sun Halo and two faint Sun Dogs were captured at our Indian Astronomical Observatory in Hanle, Lad...
15/08/2026

A beautiful 22 degree Sun Halo and two faint Sun Dogs were captured at our Indian Astronomical Observatory in Hanle, Ladakh yesterday by Skarma Thupstan, behind the Himalayan Chandra Telescope .... enjoy!

Department of Science and Technology, Government of India
Annapurni Subramaniam
Dorje Angchuk

👉Public Seminar on 18 August, 3:30 PM👉On the International Astronomical Union👉By Ramasamy Venugopal of IAU OAD👉IIA Audit...
14/08/2026

👉Public Seminar on 18 August, 3:30 PM
👉On the International Astronomical Union
👉By Ramasamy Venugopal of IAU OAD
👉IIA Auditorium, Koramangala, bengaluru

👉Livestream: https://www.youtube.com/watch?v=VQcbA0jlwmE

👉All are welcome, free entry

Address

2nd Block Koramangala, Sarjapura Road
Bangalore
560034

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