Physics

Astronomical Observational Techniques and Instrumentation

Astronomical Observational Techniques and Instrumentation

Main objective of this lecture is to present on Astronomical Observational Techniques and Instrumentation. Here derive resolution and sensitivity requirements for astronomical imaging- spatial resolution: Rayleigh criterion and the diffraction limit; system aberrations. Sensitivity: shot noise from signal; shot noise from background and detector noise. Spatial resolution is the minimum distance between two objects that can be distinguished with an imaging system.