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 second part addresses p1 measurements.
Instrument
PHT04
Temporal Coverage
1998-04-08T06:41:59Z/1998-04-09T07:24:22Z
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 II PHT calibration deficit list PHT04PSF', 1.0, European Space Agency, https://doi.org/10.5270/esa-4ivjxfz
