The Gauribidanur RadioheliograPH (GRAPH) in its present configuration is operated in the interferometer mode over the frequency range 30-100 MHz. It is proposed to design a beam-former unit for use with the GRAPH so that ...

Aditya-L1, India’s first mission with multiple science payloads is designed to study the solar dynamics. Aditya-L1 includes multiple payloads, the significant one being the Visible Emission Line Coronagraph (VELC). ...

The information contained in an optical image can be expressed as the spatial and temporal variation in number of photons at very low light level. The high gain Micro Channel Plate (MCP) image intensifier that constitutes ...

The coming decade in astronomy focuses on large widefield imaging and spectroscopic surveys. No widefield imaging facility extends to the UV region, which represents an important window into a wide variety of astrophysical ...

The INSIST (Indian Spectroscopic and Imaging Space Telescope) is a UV-optical 1m class telescope expected to produce high quality imaging and moderate resolution spectra of astronomical sources. A DMD is an optical ...

Measurement of line polarization is an essential step towards remote sensing of the solar magnetic fields. The instrument used for measuring the polarization is known as polarimeter. Waveplate is one of the main parts ...

The Indian Institute of Astrophysics operates three different radio telescopes at the Gauribidanur Radio Observatory. These instruments are: I) Radio Heliograph to obtain twodimensional images of the solar corona; ii) ...

Ground layer turbulence is one of the important site characterization parameters used for assessing the quality of an astronomical sites. Lunar Scintillometer (LuSci) is a simple, yet an effective site-testing device for ...

The UV photon event rate is very low in the near space region and we need to have a very sensitive detector to discriminate between the noise and actual signal. Photon counting method is usually used to detect such weak ...

The solar coronal mass ejections (CMEs) play a direct and vital role in deciding the space weather, so it becomes inevitable to study their dynamical properties in the lower corona (i.e., over the radial distance range: ...