The ITC works in terms of the noise level of each pixel in your final
For point-source detections, the signal-to-noise ratio
can be improved by applying a matched-beam filter.
If you select this option, the ITC will apply
suitable sampling factors for the use of this filter.
To work with a specific pixelization scheme you
can enter custom pixel sizes.
Note that pixels smaller than required for
Nyquist sampling (6.5" at 850 µm and 4" at 450 µm)
— as are often used for initial data reduction —
give an over-sampled map and correspondingly higher noise