Moon 5/13/97
By David North

Pretty good seeing tonight; things would only pop momentarily in the 12.5 newt, but held pretty steady in the 8" SCT.

The field around Aristotle is peppered with fine craters, much like Copernicus but without the obvious linearity ... they seem more random. Still it's a lovely field when steady. There is no such fine detail around nearby Eudoxus, but there appears to be a semicircular ring of broken rubble and mountains linking the two craters (this may just be the tail of the Caucasus, but it looks like a separate feature. Yet another minor revelation...)

I noted a very fine rille structure in the small plain between Eudoxus and Mare Serenitatus, (which bears the name Alexander, and Rukl refers to it as a greatly ruined walled plain, but I do not really see it. Neither Rukl nor the Times Atlas name the rille, but the latter clearly shows a string of elongated craters, making it more of a catena, I suppose).

In a southern nook of the same Mare, I spotted a fine rille structure that did not look familiar; it turned out to be Rimae Menelaus, which I have previously found difficult. Paradoxically, rimae Plinius made no impression at all this evening. Shifting light...

Then again, even in unfavorable illumination, the t-structured rilled in Posiedonius were still above the verge, this side of the pale.

A nifty feature for the night was the remnants of two ghost craters just south of Al-Bakri: precisely like a child's rendering of a seagull. Directly east, the northernmost end of Rimae Maclear was easily seen, though the rest of the rille was difficult unto questionable. This extends through the Sosigenes complex to the Ariadeaus rilles, which were spectacular tonight. The flat bottom was widely separated from the well resolved edges; an easy target, but beautiful. And for once, the rille in Boscovitch was stark and spectacular, as it should be.

A few moments of sentimental lingering gave me slightly puckered views of Armstrong, Aldrin and Collins... a nice addition to the lunarscape.

An odd feature caught my eye a bit to the south -- a line of craterlets and something vaguely like an extended valley running from near the southern tangent of Catherina to the southern tangent of Abulfeda. For once, it is something: Catena Abulfeda! I really enjoy independent discoveries in some childish way.

I spotted a curious gash in the second large mound east of Apianus, but the best I can delve from the charts is that it was a trick of the light caused by two nearby peaks. Win some, lose some.

Sacrobosco, Maurolycus and Stofler/Faraday were all seen in dramatic light, showing them well. A nice curtain call for the evening as the moon snuck behind my tree.