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Ramaprakash, A. N.
- The Solar Ultraviolet Imaging Telescope On-Board Aditya-L1
Abstract Views :194 |
PDF Views:77
Authors
Durgesh Tripathi
1,
A. N. Ramaprakash
1,
Aafaque Khan
1,
Avyarthana Ghosh
1,
Subhamoy Chatterjee
2,
Dipankar Banerjee
2,
Pravin Chordia
1,
Achim Gandorfer
3,
Natalie Krivova
3,
Dibyendu Nandy
4,
Chaitanya Rajarshi
1,
Sami K. Solanki
3
Affiliations
1 Inter-University Centre for Astronomy and Astrophysics (IUCAA), Post Bag-4, Ganeshkhind, Pune 411 007, IN
2 Indian Institute of Astrophysics, 2nd Block, Koramangala, Bengaluru 560 034, IN
3 Max-Planck Institute for Solar System Research, Justus-von-Liebig-Weg 3, 37077, Gottingen, DE
4 CESSI, Indian Institute of Science Education and Research, Kolkata 741 246, IN
1 Inter-University Centre for Astronomy and Astrophysics (IUCAA), Post Bag-4, Ganeshkhind, Pune 411 007, IN
2 Indian Institute of Astrophysics, 2nd Block, Koramangala, Bengaluru 560 034, IN
3 Max-Planck Institute for Solar System Research, Justus-von-Liebig-Weg 3, 37077, Gottingen, DE
4 CESSI, Indian Institute of Science Education and Research, Kolkata 741 246, IN
Source
Current Science, Vol 113, No 04 (2017), Pagination: 616-619Abstract
The Solar Ultraviolet Imaging Telescope (SUIT) is an instrument on-board Aditya-L1 mission of ISRO that will measure and monitor the solar radiation emitted in the near ultraviolet wavelength range (200-400 nm). SUIT will simultaneously map the photosphere and chromosphere of the Sun using 11 filters sensitive to different wavelengths and covering different heights in the solar atmosphere and help us understand the processes involved in the transfer from mass and energy from one layer to the other. SUIT will also allow us to measure and monitor spatially resolved solar spectral irradiance that governs the chemistry of oxygen and ozone in the stratosphere of the Earth's atmosphere. This is central to our understanding of Sun-climate relationship.Keywords
Oxygen and Ozone Chemistry, Solar Radiation, Sun–Climate Relationship, Ultraviolet Imaging Telescope.References
- Aschwanden, M. J., Physics of Solar Corona: An Introduction, Praxis Publishing, Chichester, UK, 2004, ISBN:3-540-22321-5.
- Krivova, N. A., Solanki, S. K. and Floyd, L., A&A, 2006, 452, 631.
- Ermolli, I. et al., Atmos. Chem. Phys., 2013, 13, 3945.
- Ghosh, A. et al., The solar ultraviolet imaging telescope onboard Aditya-L1. Proc. SPIE, 2016, 9905, 990503.
- India’s Participation in the Thirty Meter Telescope International Observatory Project
Abstract Views :177 |
PDF Views:90
Authors
Affiliations
1 Indian Institute of Astrophysics, 2nd Block, Koramangala, Bengaluru 560 034, IN
2 Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411 007, IN
1 Indian Institute of Astrophysics, 2nd Block, Koramangala, Bengaluru 560 034, IN
2 Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411 007, IN
Source
Current Science, Vol 113, No 04 (2017), Pagination: 631-638Abstract
The Thirty Meter Telescope International Observatory (TIO) is being built by an international consortium of institutes and universities in Canada, China, India, Japan and USA. The estimated cost is about US$ 1.47 billion (2012 base year). At present, it is planned to be built on Mauna Kea, Hawaii, at an altitude of about 4000 m. The mountain is already home to many of the world's largest telescopes. The Union Cabinet chaired by the Prime Minister, at its meeting held on 24 September 2014, approved India's participation in the TIO project at a total cost of Rs 1299.80 crores. Only about 30% of India's contribution to the project will be made in cash to be utilized for building common facilities and infrastructure. The rest will be made through design, development and manufacturing of a number of hardware, software and optical components. India's participation in the TIO is an extramural national project jointly funded by the Department of Science and Technology (DST) and the Department of Atomic Energy (DAE). To successfully deliver India's in-kind contributions, the two funding agencies have jointly set up the India TMT Coordination Centre (ITCC) which is located at the Indian Institute of Astrophysics (IIA), Bengaluru. IIA along with the Aryabhatta Research Institute of Observational Sciences, Nainital and the Inter-University Centre for Astronomy and Astrophysics, Pune are the key institutes which manage the India TMT project through ITCC. Being a major extra-mural national effort, several other institutes as well as universities participate in the technological, developmental and scientific aspects of the initiative.Keywords
Actuators, Coating Chambers, Edge Sensors, International Observatory Project, Segment Support Assembly.References
- Lubliner, J. and Nelson, J. E., Stressed mirror polishing. A technique for producing non-axisymmetric mirrors. J. Appl. Opt., 1980, 19(14), 2332–2340.
- Nelson, J. E. et al., Stressed mirror polishing: fabrication of an off-axis section of a paraboloid. J. Appl. Opt., 1980, 19(14), 2341–2352.
- Lorell, K. R. et al., Design of a prototype primary mirror segment positioning actuator for the Thirty Meter Telescope. SPIE Astronomical Telescopes + Instrumentation. International Society for Optics and Photonics, 2006.
- M1CS actuator design requirements document_TMT.CTR.DRD.08.002.REL06.2015 (project internal).
- M1CS actuator production and quality plan_R4_2015_TMT.CTR. PRE.15.095.REL01 (project internal).
- M1CS PDR_05_Actuator_TMT.CTR.PRE.15.083.REL02 (project internal).
- Subramanian, S. et al., J. Astrophys. Astron., 2016, 37, 37.