Image Details
Caption: Figure 7.
Dealiasing filters for a 1283 grid (﹩{k}_{{\rm{\max }}}=64﹩). Option 1 applies a sharp 2/3 cutoff at ﹩k=2{k}_{{\rm{\max }}}/3﹩, while option 2 uses the smooth rational filter with α = 0.495 and α = 0.499, producing a gradual high-k rolloff.
© 2026. The Author(s). Published by the American Astronomical Society.