Large-scale Signal Deficit and Instrumental Pickup in ACT PA5 Night Data (IMAGE)
Caption
Average of the 4 splits for PA5 f090 night-time data covering the 3600 square degree area 255◦ > RA > 120◦,−5.5◦ < dec < 21.5◦ illustrating the deficit of large-scale power in total intensity (T) and the presence of instrumental pickup in all Stokes components. The pickup shows up as broad horizontal stripes. The color range is ±500µK in T and ±50µK in Q and U.
Credit
The Atacama Cosmology Telescope collaboration
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