Holographic Atlas
The off-axis cross
the two beams split to the sides, face each other, and fold off the rotating knot into the X · the crossing angle carries the twin image away · drag to orbit · scroll to zoom · press F to freeze
Off-axis hologram · locked
crossing angle (the X)4°
carrier f_c · fringe0.0698 · 14.327λ
Leith threshold angle1.7189°
recovery · inline (twin ghost)0.2429
recovery · off-axis (twin gone)0.9986
twin separation · 2·f_c0.1396 (0 inline)
stateknot turning · writing pages
source: hologram-snapshot.json · Leith–Upatnieks off-axis · multiplex proposed, labeled