Welcoming Remarks -Director, IIA, Bengaluru Welcome Remarks -Director, IIA, Bengaluru

Plenary Session, "L&T's contribution to Mega Science Projects"-Ravi Kataria, Head Business Development & Marketing, Missiles & Aerospace Business, Larsen & Toubro Limited. "L&T's contribution to Mega Science Projects"-Ravi Kataria, Head Business Development & Marketing, Missiles & Aerospace Business, Larsen & Toubro Limited.

“India and Square Kilometre Array”-Y. Gupta, Centre Director,NCRA “Square Kilometre Array”-Y. Gupta, Centre Director,NCRA

“India's contribution to TMT hardware”-N Viswanatha, Former GD, ISRO & Consultant TMT Project, IIA, Bengaluru

Poster Presentation & Coffee/Tea Break

"Wide Field Optical Spectrograph for Thirty Meter Telescope – India’s contribution in the design and development"-Devika K Divakar, Project Scientific Associate, India-TMT Coordinate Center,IIA, Bengaluru

INVESTIGATING SINGLE PHOTON INTERACTION PRODUCED BY TYPE II SPDC INTRODUCTION- SPDC is a nonlinear instant optical process that converts one photon of higher energy (namely, a pump photon), into a pair of photons (namely, a signal photon, and an idler photon) of lower energy, in accordance with the law of conservation of energy and law of conservation of momentum. It is an important process in quantum optics, for the generation of entangled photon pairs, and of single photons. METHOD OF PHOTON INTERACTION EXPERIMENT- The main goal of photon interaction experiment is to collide two photons at specific point in space and time exploring the particle nature of light and to reveal new information about the very nature of photons. The goal of photon collision is accomplished using β barium borate crystal which produces a pair of entangled photons using spontaneous parametric down-conversion (SPDC) process which are to be collided. INFERENCES OF THE EXPERIMENT- The main inference that can be drawn from the results of the experiment is to explain how the photons can be split into more fundamental particles (possibly dark photons). This interaction between the photons collision will help us to know and clarify our understanding of photon and our universe. It will also give us a clue as to how our universe might meet its ultimate fate. CALCULATION OF COLLISION POINT- x=a cos⁡θ, y=l_1+b sin⁡θ (for one of the ellipse) x=c cos⁡∅, y=〖-l〗_2+ d sin⁡∅ (for second ellipse) ∅= 〖sin〗^(-1)⁡[(da/bc)± √((〖da/bc)〗^2-4[〖{l〗_1+l_2+b^2-〖(bc/a)〗^2}/〖(bc/a)〗^2 ] )] θ = c/a cos[ 〖sin〗^(-1)⁡[(da/bc)± √((〖da/bc)〗^2-4[〖{l〗_1+l_2+b^2-〖(bc/a)〗^2}/〖(bc/a)〗^2 ] )]] ] REFERENCES- 1) Effect of high dimensional entanglement of Laguerre - Gaussian modes in parametric down conversion in journal of optical society of America B (April 2009) by Yoko Miyamoto (University of Tokyo), Schigeki Takeuchi (University of Kyoto). 2) Constraining the photon lifetime in physical review letters ( July 2013) by Julian Heeck (Max Planck institute of nuclear physics). 3) The mass of the photon (compilation of 130 research papers), by Liang-Cheng Tu1, Jun Luo and George T Gillies.

“Low cost Characterisation of Sun and Nadir Sensors for Attitude Control of Nano Satellites”- Mr. Asir Nesa Dass N, IIST

“Sky Watch Array Network (SWAN): Wide-band Receiver Instrumentation development and Current Status”- Mr. Raghavendra Rao K.B, RRI

The Infrared Astronomy Group (IR group) of TIFR, Milind Naik The Infrared Astronomy Group (IR group) of TIFR has been developing near-infrared (NIR) instruments for ground based Indian telescopes, far-infrared instruments for TIFR 100-cm balloon borne telescope and has recently developed space platforms via IRSIS　 & other projects. This talk will present an overview of NIR astronomical cameras developed by the IR group which have been commissioned / used at various observatories in India (e.g. IGO, IUCAA,Pune; MIRO, PRL, Mt Abu; HCT, IIA, Hanle, Ladakh and DOT, ARIES, Devasthal, Uttarakhand). TANSPEC Optical-NIR spectrograph is recently (April 2019) installed and commissioned at DOT 3.6 meter telescope. TIRSPEC NIR imager and spectrometer was commissioned at 2 meter HCT, Hanle in 2014 and is currently being used for science observations. TIRCAM2 NIR imager has been used at MIRO, IGO and is currently installed at the side port of DOT 3.6 meter telescope. Talk will also cover a briefoverview of the IRSIS related work.

“Low cost - 21cm observation on Sun from Kodaikanal Solar Observatory”-Mr. Manickavasagam G (SBM college of Engg. and Technology, Dindigul)

Lunch Break

“Engineering challenges in realization of Visible Emission Line Coronagraph on-board Aditya-L1”-Mr. Subramanya NagabhushanaIIA, Bengaluru

"Brush arrangement for dome of 3.6m Devasthal optical telescope at ARIES”- Tarun Bangia, ARIES, Vaibhav Sharma, Zakir Husain College of Engineering & Technology, Aligarh Muslim University

“Design and development of mechanical systems of SUIT Payload onboard Aditya-L1”-Mr. Akshay Kulkarni, IUCAA

“Design and Development of stress relieving support system for TMT primary glass blanks”-Mr. Alikhan Basheer, IIA, Bengaluru

“Design and Development of Telescope Cover Structure for 3.6m Telescope at ARIES”– Dr.Tarun Bangia, ARIES

Poster Presentation & Coffee/Tea Break

“Radio Frequency Interference and its mitigation at upgraded GMRT”-Mr.Sureshkumar S. , NCRA-TIFR Pune

“Testing a Multi-element, Multi-beam, FPA Beamformer in Freespace Test Range”- Ms Bela Dixit, GMRT, NCRA-TIFR

Development of tools and methods to characterize low noise power supplies for the purpose of Astronomical instrumentation Reducing power supply noise is one of the essential steps in order to implement precision and reliable instrumentation. However, commercial power supplies are usually insufficient for the purpose of astronomical instrumentation. They usually lack noise characterization over a range of frequencies and also over a range of applied load. In this regard, we have defined a method of estimating tolerable noise limits along with specific bandwidth and load limit requirements for various electronic components. We have developed tools such as DC constant current loads and active RC filters to test and measure the noise performance of off-the-shelf power supply modules. Finally, We have fabricated a range of old and modern voltage regulator architectures and compared their measured noise figures for the purpose of realizing a low noise (< 50 microVolt RMS) power supply. We will discuss the various methods of noise measurement using a modern digital oscilloscope and various techniques to reduce power supply noise.

“Accelerated Tile Processor”- Prabu T, RRI

Challenges in Designing a Digital Spectrometer for Detection of Signals from CD/EoR, Girish B. S, RRI Challenges in Designing a Digital Spectrometer for Detection of Signals from CD/EoR, Girish B. S, RRI

FPGA-based Focal Plane Array Beamformer Architectures for the Expanded GMRT The Expanded GMRT (eGMRT) is a proposal to look at three expansions to the GMRT - increasing the field of view, increasing angular resolution and improving the sensitivity to the extended radio emission. In this talk, we would focus on increasing the field-of-view using Focal Plane Array (FPA) and the ongoing development of the FPGA-based prototype FPA beamformer. A prototype is being developed to understand the challenges in building real-time beamformer with multiple inputs and multiple beams. As part of this project, we have calculated the computational complexity of implementing FPA beamformer in real-time and the various tradeoffs at the architectural level. This tradeoff analysis helped in arriving at an optimal number of inputs, spectral channels, and beams for Virtex-5 FPGA. In case of an FPA system, the computation of beamformer weights through the correlation operation is only needed at distinct time intervals. This led to a further increase in the number of inputs for the same hardware setup, by separating the correlation and beamforming designs, and exploring FPGA reconfigurability. An alternate approach through a fully offline correlation design using recorded raw voltages would also be described. The current version of the multi-element, multi-beam design of the narrowband (32 MHz bandwidth, 16-input, 4-beam) and wideband (300 MHz bandwidth) beamformers have been developed using the CASPER (Collaboration for Astronomy Signal Processing and Electronics Research) methodology. The recent test results from the above- mentioned beamformer designs conducted in a free-space test range (at the GMRT site) would be described. As a step towards migration to contemporary signal processing platforms and the final prototype beamformer, we have started beamformer development using Xilinx RFSoC (RF System-on-Chip).

Coffee/Tea Break

Ultra-Precision Engineering-Enabling human’s fundamental quest to decode the COSMOS - Sendhil Raja S. Ph.D., RRCAT

Dinner at ICNAPP

Invited Talks “Square Kilometre Array”-Y. Gupta, Director,NCRA

“Software for the Thirty Meter Telescope”- Prof. Annapurni Subramaniyam, IIA, Bengaluru

“VELC payload on ADITYA-L1” – Prof.B.R.Prasad, PI VELC ADITYA L1,IIA, Bengaluru

Poster Presentation & Coffee/Tea Break

“INSIST: A Proposed Wide-Field, UV-Optical, Imaging and SpectroscopicSpace Telescope”-Mr.Sriram Sripadmanaban, IIA, Bengaluru

“Adaptive Optics Program at IIA”- Dr.Sridharan Rengaswamy,IIA, Bengaluru

“FE analysis for the mechanical structure of Prototype Segmented Mirror Telescope”- MrSandeep D.S.IIA, Bengaluru

“FE analysis for the mechanical structure of Prototype Segmented Mirror Telescope”- MrSandeep D.S.IIA, Bengaluru

“Conceptual Design of Primary Mirror Cover for the proposed 2m classNational Large Solar Telescope”- Mr. Govinda K.V. IIA, Bengaluru

Lunch Break

“Telescope Control Software and Communication server for 30 inch Telescope, VBO - an Overview / Software aspects of 2.4 M mirror coating plant, VBO”- V Arumugam,Engineer-E,IIA, Bengaluru

“The 3.6 m DOT electronics: Maintenance and future upgradation strategies”- Dr Kumar T. S. ARIES

“RF over fibre optic backplane for phased array antennas”- Mr.Sanjeet Kumar Rai ,NCRA TIFR

“RASCAL (Reflector Antenna Sensitivity Calculator) Software”- Mr. Sougata Chatterjee,GMRT-NCRA-TIFR

“Antenna and RF”-Abdipour

Poster Presentation & Coffee/Tea Break

“Dual polarized broadband dipole antenna feed with conical reflector for uGMRT”-Mr Hanumanth Rao Bandari, TIFR

“Design of Drive Circuit for piezo walker for configurable slit unit”- Mr Pankaj Madhwani, TIFR, Mumbai

“Evolution of GMRT Servo Computer with RTAI: Status and Updates”-Mr.Thiyagarajan Beeman, Mr.Shailendra Bagde, GMRT, TIFR.

“Developmental status of X-ray polarization sensitive mirrors”-Mr Panini Singam, IIA, Bengaluru

"Conceptual design for TMT high resolution optical spectrograph"- Amirul Hasan, Project Engineer I, India-TMT Coordinate Center, IIA, Bengaluru

“An overview of Analog Receiver System for Detection of Global EoR Signal” - Somashekar R, RRI

“Non-spherical representation of optical surfaces - an advanced study”- Mr Totan Chand, IIA, Bengaluru

Coffee/Tea

Visit to VBO (Starting Point: IIA, Koramangala)

0 Breakfast at VBO

Visit to VBT (90")

Coffee/Tea

Visit to JCBT,40" & 30" Telescopes

Lunch Break

Departure from VBO and arrival to IIA Bangalore, Conference closure