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I introduced a new time-imaging operator for pegleg multiples, called HEMNO. HEMNO operates on single CMP gathers, making it computationally efficient and predictable in terms of amplitude behavior. I demonstrate that HEMNO can correctly account for moderate variation in reflector geometry with position, and that in a joint imaging context (LSJIMP), HEMNO accurately models both the vertical positioning of peglegs and some of the focusing effects with offset.

Stanford Exploration Project