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.