Midnight Run

The phone rang just as I was going to bed.

This phone call had a number I knew all too well, even without the caller ID showing the name… K1 Remote Operations. A this time of night it would be a problem, a serious problem. This particular problem would have me on the road back to the summit an hour later.

Keck at Night
Looking towards the Keck 2 dome on a moonlit night
Midnight runs to the summit are not common, but they do occur in my life. Usually we can work remotely, the night attendant serving as our remote eyes and hands. Just press the right button, flip the correct switch, done. Not this time. We tried, for over an hour we tried.

I really did not want to head back up. I had just gotten down a few hours ago, having spent the day on the summit working on the usual long list of things that need to get done. Days on the summit, in the thin air of nearly 14,000ft elevation are physically draining.

The irony of this malfunction is that I had seen it before. The dome had tripped out inexplicably on previous occasions. The problem would occur then disappear. Once it vanished you could not troubleshoot it. Unlike most of our other systems there are no logs from the shutter drive, nothing records what was going wrong.

The Friday before this it had happened to me again. But this time was different, I had a maintenance computer attached to the PLC serial port. This time I saw the error, something in the code labeled speed mismatch. No idea what this was, or how it worked. Again the error disappeared, and I could not troubleshoot further as the weather was getting worse. No opening the shutters again.

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Puna Glow

Puna is glowing.

Not a good glow when you consider that glow is from a raging river of lava between fissure 8 and the sea at Kapoho. Still it can be pretty under the rising Milky Way. I stayed late at work and took a few photos on the way down the mauna. Click on the image for full scale goodness…

Puna Glow
The glow of lava in the clouds and vog over Puna. Five image panorama with a 14mm lens from the summit of Mauna Kea.

4K Screen Backgrounds

I was just re-editing one of my photos for use as a background. In my life complicated by multiple computers, many of which are virtual, I use unique screen backgrounds to remind myself which computer I am on.

Zodiacal Light over Keck
Zodiacal Light over the Keck telescopes
Hmmm? Maybe I should share a few.

These are sized for the newer 4K monitors at 3840 x 2160, which is the usual 16:9 aspect ratio now used for most monitors. The images should display well on full HD monitors as well. You can use these for personal use only, no commercial use or re-posting to other services!

Use the ‘full size’ link under the image to download it.

The Wai‘ōpae Tide Pools

One of the most beautiful places on the island is gone.

Hawaiian Damselfish (Dascyllus albisella)
A Hawaiian Damselfish (Dascyllus albisella) in a pool at Wai‘ōpae
The Wai‘ōpae Tide Pools were a place where anyone could see the wonders of a coral reef. The calm and protected pools full of fish and lush coral. You could see damselfish hovering over a coral head or watch small barracuda hunt just under the surface.

And they were popular, on any given day a couple dozen locals and tourists could be seen exploring the pools. You could swim across one or two, then have to climb across a few feet of old pahoehoe lava to drop into the next. The more adventurous were rewarded with even richer coral in the outermost pools where the ocean waves created more challenging swimming conditions.

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