National Radio
Astronomy Observatory

1.6.4.2 Feathering in a Single-Dish image

If you have a single-dish image of the large-scale emission in the field, this can be “feathered” in to the image obtained from the interferometer data. This is carried out using the feather tasks as the weighted sum in the uv-plane of the gridded transforms of these two images. While not as accurate as a true joint reconstruction of an image from the synthesis and single-dish data together, it is sufficient for most purposes.

See § 5.5 for details on the use of the feather task.

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