DEVOTED TO THE STUDY OF EARTH’S MOON VOL. 26 NO. 2 SUMMER 2007 SELENOLOGY The Journal of The American Lunar Society Selenology Vol. 26 No. 2 - Summer 2007 The official journal of the American Lunar Society, an organization devoted to the observation and discovery of the earth’s moon TABLE OF CONTENTS: Cassini A and the Washbowl: As Described by Wilkins and Moore ......... 2 On Closer Examination .......................................................................... 6 Vertical Displacement of Features in the Montes Spitzbergensis Area ....... 15 COVER: Cassini Crater imaged by Wes Higgins on August, 25 2005 at 10:45 UT with a 45 cm Newtonian telescope. Selenology, Vol. 26 No. 2, Summer 2007. A publication of the American Lunar Society. President: Eric Douglass; Vice President: Steve Boint; Editor: Francis G. Graham. Web site: http://amlunsoc.org/ Layout/design by A Distant Wind (www.distantwind.com) This issue edited by Steve Boint. Copyright © 2007 by the American Lunar Society and individual authors; all rights reserved. Send manuscripts, general observations, photographs, drawings and other correspondence to: Steve Boint, VP ALS, 1807 S. Spring Ave., Sioux Falls, SD 57105 E-mail:
[email protected] Send changes of address to Eric Douglass at
[email protected] If you don’t have e-mail, send them to Steve Boint Page 2 SELENOLOGY Vol. 26 No. 2 Cassini A and the Washbowl: As Described by Wilkins and Moore By Raffaello Lena, Maria Teresa Bregante, Eric Douglass and Giorgio Mengoli GLR group 1. INTRODUCTION degrees. When the colongitude In this article, we report on is the same, on different several observations made by cycles, the lighting conditions the Geologic Lunar Research are similar.