in order to perform accurate relative photometry to detect faint emission around point sources in the multi-aperture mode a reliable point source reference profile needs to be established which covers representative wavelenghts of all three aperture photometers. this first part addresses p2 and p3 measurements.
Instrument
PHT04
Temporal Coverage
1998-01-19T12:26:02Z/1998-02-07T18:32:04Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the worlds first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
European Space Agency, Ulrich Klaas, 2024, 'Beam size effects in multi-aperture measurements I PHT calibration deficit list item 3', 1.0, European Space Agency, https://doi.org/10.5270/esa-zsh86j0
