Observing Modes Sample Clauses
Observing Modes. In this section are presented, for each of the science cases discussed, the relative observing modes and observational strategies to perform the needed observations. In the following, we have used an interferometer with 2m mirrors and, for computing the total integration time for each observing mode, we have assumed a scan duration of 30 sec. and a number of two scans per pair of u,v point. To compute the total number of u,v points we have assumed tangent positions of the mirrors.
Observing Modes. The ultimate scientific potential of FIRI depends critically on the ability to observe survey fields for very long times with possible multiple field orientations, with possible total exposure times of several days. Long exposure times will be needed to provide scans covering the entire u-v plane. To obtain an image of a sky area is necessary to perform spectrographic interferometry for every single point in the 𝑢, 𝑣 plane maintaining the spatial coherence (compared to some known sources). Every single (𝑢, 𝑣) point acquired by the interferometer, gives the spatial Fourier component for a fixed distance between the sources contained in the sky area in observation and in a direction parallel to the telescope baseline and for the various spectroscopic components.
1. Derive any specific requirements related to either exposure times or the ability to cover the u-v plane for particular observations (really part of a future Operational Concept Definition).