Neptune will pass through opposition at 00:54HST today. Observers will know that opposition places a planet nicely for convenient observation, rising at sunset, transiting near midnight, and setting at dawn.
Postcard from the Summit – Secondary Lift
Banded
The Moon, Mars, Saturn and Spica
A nice conjunction of a crescent Moon, Mars, Saturn and the bright star Spica will grace the evening sky tonight. The quartet will be arranged in a rough square about 4° on side. The two planets and the star will all be about 1st magnitude, with the Moon showing about 25% illuminated.
40″ Nickel Viewing
The view was pleasing sharp and crisp, revealing decent optics and steady air over the mountain. I could just make out the central star on M57, something I had only done before with and even larger telescope.
Control the Great Refractor
The instrument may date to the 1800’s but at that time it was powered by water and muscle as there was no electricity on the mountain. It was not until much later, in the middle of the twentieth century that the telescope was refitted with electrical controls and motors.
Postcard from the Universe – M22
The seeing was pretty bad, leading to bloated stars in the image, unusual conditions for Hale Pohaku. Still a nice subject for the AT6RC and 60D camera. I expect I should shoot this target again.
New Moon
Mercury at Maximum Elongation
Today Mercury reaches maximum elongation, the furthest point it will reach from the Sun in the sky and the highest it will be above the sunrise for this morning apparition. The planet is easily visible as a bright, starlike object about 15° above the rising Sun as the twilight begins. Over the next couple weeks Mercury will slide back into the sunrise, heading for superior conjunction on September 10th.
Atop Mt. Hamilton
The visitor directions on the website had specifically cautioned that the summit road was curvy, something I found to be a drastic understatement. From the very bottom it is curve after curve all the way up, with almost no straight sections. S-curves followed sharp bends leading to hairpins. Nearer the observatory the curve intensity only increases as the road narrows. Local history indicates that the horse-drawn wagons that transported heavy equipment up this road could not negotiate steep grades, the only solution was to follow the contour of the mountain, resulting in an incredibly curvy road.
On a sunny Saturday afternoon there were other users, the road is apparently popular with local cyclists. With the density of the sharp curves there was often little choice but to follow at bicycle speeds at times. I would much rather drive up Mauna Kea than this road again. Next time up Saddle to the summit I will recall Mt. Hamilton road and consider myself lucky.
The reason I was climbing this winding road was simply to be a tourist. Unlike the previous seven days, this day was to be fun. For much of the previous week there had been full day sessions of lectures and labs covering the intricacies of adaptive optics systems. Spending a full week in Santa Cruz might be considered a vacation, aside from the fact there had been very little open time to explore the surrounding area. There was only one open day in my travel plans, and I had specific plans for that day, a visit to an observatory.
