An overview of the various observing modes offered by ISOPHOT has been given in Section 3. This Cookbook section gives guidelines and details for the preparation of ISOPHOT observations and, in particular, instructions how to calculate approximate observing times.
A summary of the capabilities of the various AOTs is given in Sect. 6.1. This should serve as a quick reference guide for AOT selection. Before proceeding to the sections containing detailed descriptions of individual AOTs (Sect. 6.4 to 6.9) the reader should carefully read Sect. 6.2 and 6.3, which provide important information about astronomical limitations and overheads. For a complete understanding of the instrument parameters the reader should also be familiar with Sect. 2 to 4.
Note:
The flux densities of the
sources have to be specified for the central wavelength of each
bandpass. All wavelength-dependent coefficients in the sensitivity
calculations include a colour correction factor which assumes a flat spectrum,
i. e. constant flux density over the filter bandpass (
).
S/N or integration time calculations for the PHT-C arrays refer to one individual pixel.