A magazine of lunar topographic studies Vol. 17 No. 2 December 2008

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Page 18 The New Moon December 2008
DarwinDarwin2008 October 12 / 20:20 to 21:10 UTCol. 69.3° to 69.8° / Moon’s age 13.5 d /Lunation 1059 / Seeing: AII-III, slight mist200 mm SCT x200, binoview used,integrated lightPDA sketch, enhanced in PhotoPaint indoorsPeter Grego / St Dennis, Cornwall, UKNotes: A good libration for a general study ofDarwin, a vast and ancient crater near thewestern limb. The crater was emerging intothe morning light during the session. Some ofits northern floor was visible, in the form ofwhat appeared to be a large area of raisedground, subtly shaded on its eastern face.Darwin's southern floor was completely coveredwith shadow, the southwestern rim beingvisible as a narrow, complex line of illumination.The dark-floored crater Crüger was visibleto Darwin's northeast. A narrow linearshadowed scarp ran from Darwin's northeasternrim, extending south and east of Crüger.Parts of the southern extension of RimaSirsalis was visible running from the southeasternrim of Darwin, north to de Vico A, withhints of it further north to Crüger A, but indistinctlyseen here.The New Moon December 2008Darwin2008 October 12 / 21:30 to 22:15 UTCol. 70.2° to 70.5° / Moon’s age 13.5 d /Lunation 1059305 mm Newtonian, x400Phil Morgan / Tenbury Wells, Worcestershire,UKIt’s not often that three people, observing independentlyof each other, make visual studiesof the same feature on the same evening atabout the same time. This is what happenedon the evening of 2008 October 12, whenColin Ebdon (p18), Peter Grego (above, left)and Phil Morgan (above) depicted the largecrater Darwin as it emerged from the morningterminator. Libration was excellent on thisoccasion, with libration in latitude at around-03° 10’ and libration in longitude -05° 50’.Page 19
Page 1 and 2: Edited by Peter Grego, Topographica
Page 3 and 4: The lesser-known nomenclature of th
Page 5 and 6: Gassendi A, this shadow is veryprom
Page 7 and 8: Maurice Collins’ image of the mor
Page 9 and 10: ment. Just east of Agatharchides A
Page 11 and 12: The New Moon December 2008Page 11
Page 13 and 14: The New Moon December 2008Page 13
Page 15 and 16: Hippalus2008 December 720:10 to 20:
Page 17: The New Moon December 2008Page 17
Page 21 and 22: Features of the young Moon’stermi
Page 23 and 24: Maurice Collins writes: Blue areas

A magazine of lunar topographic studies Vol. 17 No. 2 December 2008

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