Our adventure was headquarter'ed at Honeymoon Flat campground, by the East Walker River. It was a perfect campsite, with wide views of the sky. Fred and Jim had staked out a good place by the time I arrived at 5:30pm. The rest of the gang trailed in as I set up the scopes and turned the students towards the task of starting our pasta dinner. The graze was our big goal #1, but our clear skies suddenly showed some clouds over the Sierra crest, right where the moon was. Still, it remained clear around the moon for a while, long enough for Diane to watch her first lunar occultation, of a 7th magnitude star a few minutes before the graze. But clouds engulfed the moon minutes before the graze itself, and didn't clear away till 15 minutes later. Our two stations were totally shut down!
Travertine, a calcium carbonate mineral formation, deposits when the mineral-saturated water reaches the earth's surface. |
A rare lenticular cloud was the first sign the weather was taking a left turn |
Sunset lights up the bottoms of these rare mammulus clouds |