Gridded Visibility Weights

No actual science content here — I just thought this looked cool:

Gridded visibility weights.
Gridded visibility weights.

This maps out how much information one of the ATA antennas contributed to the sampling of the sky during one of my observations. Each track comes from its pairing with another antenna and moves elliptically as the Earth rotates. The space that’s being mapped is the “visibility” plane, the 2D Fourier transform of the sky.