scientific abstract: the aim of this proposal is to secure spectral imaging of a few classical galactic targets with the isocam cvf over the full accessible lw range. while such observations are in principle possible by other means (ground and kao) at least for the hii region interfaces, we have no guaranty that they will ever be made, and iso will allow to obtain homogeneous, good-quality data with a complete wavelength coverage. the purposes of these observations will be to study the distribution and properties of normal dust (through extinction determined from recombination lines), hot dust (through continuum emission), and of the carrier(s) of the ir emission bands at the interfaces between hii regions and neutral clouds, and in reflection nebulae that are illuminated by a fainter and softer radiation field. combined with submillimeter and millimeter observations they will yield a complete picture of these objects including thermal balance. observation summary: imaging of selected galactic extended objects will be made with complete cvf scans in the long-wavelength channel of isocam. the pixel size will be 6 and the elementary integration time 0.28 seconds as the targets are generally bright. some objects considered initially are not observable because of saturation. for ngc 7023 we also plan a 3 cvf lw1 scan for higher angular resolution.
Instrument
CAM04
Temporal Coverage
1996-02-29T16:30:24Z/1997-02-01T23:48:39Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the world's 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.
