2 citations · 4 across the 4 of their papers we have counts for
4 papers
Measurements of atmospheric turbulence parameters at Vainu Bappu Observatory using short-exposure CCD images
Sreekanth Reddy, Ravinder Kumar Banyal, Sridharan R +1
We report the atmospheric turbulence parameters namely, atmospheric seeing, the tilt-anisoplanatic angle () and the coherence time (), measured under various sky conditio…
Seeing-Induced Errors in Solar Doppler Velocity Measurements
Sreejith Padinhatteeri, R. Sridharan, K. Sankarasubramanian
Imaging systems based on a narrow-band tunable filter are used to obtain Doppler velocity maps of solar features. These velocity maps are created by taking the difference between t…
Crowded-Field Astrometry with SIM PlanetQuest. II. An Improved Instrument Model
R. Sridharan, Ronald J. Allen
In a previous paper we described a method of estimating the single-measurement bias to be expected in astrometric observations of targets in crowded fields with the future Space In…
Crowded-Field Astrometry with the Space Interferometry Mission - I. Estimating the Single-Measurement Astrometric Bias Arising from Confusion
R. Sridharan, Ronald J. Allen
The accuracy of position measurements on stellar targets with the future Space Interferometry Mission (SIM) will be limited not only by photon noise and by the properties of the in…