We are very grateful to Ms. Núria Domènech for her work on the reduction of an initial set of observations, which led to the first identification of the near-infrared morphology of DR 18. We are pleased to thank the staffs at Calar Alto and La Silla Observatories for their assistance during the observations, especially Mr. Manuel Alises and Mr. Felipe Hoyo in Calar Alto, and Mr. Hernán Núñez and Mr. Ariel Sánchez in La Silla. Dr. Kurt Birkle is thanked for kindly making available to us some of his observing time with the CCD camera at the 1.23 m telescope. The referee, Dr. M. van den Ancker, is thanked for his careful reading of the manuscript and insightful remarks. JT acknowledges support by the CICYT under contract ESP97-1803.
© European Southern Observatory (ESO) 1999
Online publication: September 2, 1999