Showing papers by "Dietrich Lemke published in 1989"
26 Sep 1989
TL;DR: The ISOPHOT photometer experiment as mentioned in this paper provides four sub-systems, as described in LEMKE 1985, which optimizes the different ways of photometric measurements, allowing multiband - multiaperture photopolarimetry, multicolor - polarimetric imaging and spectrophotometry.
Abstract: The Infrared Space Observatory's (ISO) photometer experiment ISOPHOT provides 4 sub-systems, as described in LEMKE 1985, which optimizes the different ways of photometric measurements. They allow multiband - multiaperture photopolarimetry, multicolor - polarimetric imaging and spectrophotometry. In order to cover the wide wavelength range 2.5...240μm five different detector materials have to be used. They are arranged according to their application as 2D-arrays, linear arrays and single detectors, a total of 223 detectors are present, see tab. 1.
4 citations
01 Oct 1989
TL;DR: The ISOPHOT project as mentioned in this paper is one of the four focal plane experiments of the European Space Agency's Infrared Space Observatory (ISO), scheduled for a 1993 launch, it will operate extrinsic silicon and germanium photoconductors at low temperature and low background during the longer than 18 month mission.
Abstract: ISOPHOT is one of the four focal plane experiments of the European Space Agency's Infrared Space Observatory (ISO). Scheduled for a 1993 launch, it will operate extrinsic silicon and germanium photoconductors at low temperature and low background during the longer than 18 month mission. These detectors cover the wavelength range from 2.5 to 200 microns and are used as single elements and in arrays. A cryogenic preamplifier was developed to read out a total number of 223 detector pixels.
1 citations