This is a coadd of ACT with various other datasets using a tiled constant correlation model. Pan and scroll using the mouse, like on google maps. Use the keyboard to change what is shown.
The act-only maps are gently filtered to reduce ground pickup. This was done by subtracting a constrained noise realisation from each 8x8 degree tile (the tiles are 4x4 degrees, but have a 2 degree padding on each side), where the realisation is constrained by a 1 degree thick region around the edge of the exposed part of the tile. This can be expected to remove signal on 5-10 degree scales or longer.
F is an approximately matched filtered map meant to maximize point source S/N.