The following document lists the file abstract/KMATTILA_DGBE_CP2.abs
from catalogue VI/111.
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SCIENTIFIC ABSTRACT 12 arcmin away from the pointed observations with ISOPHOT images with ISOCAM, using filters LW 2 (in parallel mode) and LW 3 and 1 (as linked observations), are taken. The exact positions of these images around those of part one of this proposal will depend on the roll angle of the telescope at the time the ISOPHOT observations will be done, but since they are part of a survey that will determine the large scale properties of the Galaxy, this kind of uncertainty does not influence the scientific value of the observations. The images in two spectral bands will supplement the observations of the CP proposal "Selected Area Galactic Survey with ISOCAM" (Price et al.) and will therefore be shared between the consortia of this and Dr. Price's proposal. They will yield an improvement in modeling the point source sky and will thus provide essential information for the photometric measurements of this proposal by accurately accounting for the contribution of discrete sources. OBSERVATION SUMMARY ALL OBSERVATIONS IN THE TARGET LIST OF THIS PART ARE LINKED TO OBSERVATIONS IN THE FIRST PART OF THIS PROPOSAL During the pointed observations done in this proposal with ISOPHOT, ISOCAM LW 2 (5 - 8.5 um), 6" PFOV, parallel mode observations are automatically obtained as by-products. In order to supplement them with ISOCAM images in different filters, the positions of the parallel mode observations are revisited with ISOCAM LW 3 (12 - 17 um) and LW 1 (4 - 5 um), 6" PFOV, as prime instrument. As the positions of the ISOCAM parallel mode images depend on the roll angle of the telescope which is not known in advance, the ISOCAM observations with LW 3 and 1 have to be linked to the pointed ISOPHOT observations. The only informations needed in this procedure from the PHT pointed observations are the exact positions of the appertaining ISOCAM parallel observations. They will subsequently be inserted into the target list replacing the current values. In order to distinguish the names of the ISOCAM parallel mode positions from those of the ISOPHOT prime observations, they have got the suffix "CAM-||" in the target list. 49 LW 3 and 1 images (in that order) will be needed to match the LW 2 observations in parallel mode. Each entry in the target list takes about 10 minutes with a CAM general observation in two filters; the spacecraft time for this part of the experiment is therefore 8 hours.