Sizing up the fieldIn infrared observations made at 60 microns, the detector array covers only 2 arc minutes (or 120 arc seconds) on each side.
The Ring Nebula (to the left) is 70 arc seconds wide and is scaled in this photo to be the size that the KAO detector will see.
Some objects like the M33 galaxy (to right), are much too large for the detector. The white square in the photo shows the relative size of the IR detector array. Astronomers will have to choose what part of the object to observe. The entire galaxy is 60 arc minutes by 40 arc minutes. Draw ten little boxes around the areas where you would collect data in M33.
At a wavelength of 100 microns, the array sees an area 3.5 arc minutes on a side. At 160 microns. the array covers 6 arc minutes on a side. If the box above is 2 arc minutes wide, draw a box that would show the field at I 00 microns and at 160 microns. Astronomers on the KAO will report which wavelengths they are measuring during the flight.