A Darker View

Employment Opportunity at Keck – Machinist

W. M. Keck Observatory position announcement…

Senior Machinist-Infrastructure Technician

The W.M. Keck Observatory operates two of the world’s largest and most scientifically productive optical/infrared telescopes located on the summit of Mauna Kea on the Big Island of Hawaii. A highly capable and motivated staff operates, maintains and develops the complex telescope systems and infrastructure on the summit. We seek a Senior Machinist-Infrastructure Technician to join this high-caliber team.

This position is responsible for conventional and CNC machining of mechanical parts; interpreting complex mechanical fabrication drawings; and performing mechanical fabrication, assembly, adjustment and troubleshooting of precision mechanisms. In addition, this position will participate in maintenance of the summit infrastructure, including repairs of mechanical systems and preventative maintenance.

Minimum requirements are: Knowledge of materials, their properties, and suitability in different mechanical applications; five years of experience in an industrial environment with proven capability for installation, maintenance, and troubleshooting of mechanical systems; and eight years of experience as an industrial machinist building high precision parts.

Commitment to WMKO’s core values, working well with others, and the ability to handle multiple tasks and priorities within a fast paced environment are all essential. Additional information about WMKO and this position may be found on our website at www.keckobservatory.org/about/employment

This position requires you to submit your resume on-line at: http://keckobservatory.iapplicants.com/ViewJob-319065.html with your cover letter that states why you are uniquely qualified for the position.

EEO Employer

Postcard from the Universe – Lagoon

Another product of this last new Moon star party at the MKVIS. An easy target, suited to checking the performance of the new setup. As usual, click on the image to view the larger size…

The Lagoon Nebula, NGC6523, in Sagittarius, 11 x 8min exposures, Canon 20Da and AT6RC

Postcard from the Reef – Keferstien’s Sea Cucumber

As I have discussed before, there are some weird critters on the reef. Some of the more alien appearing creatures are the sea cucumbers of the family Synaptidae, the thin-walled sea cucumbers. These look like large worms, moving across the reef by expanding and contracting their bodies. At the front end are a set of feeding tentacles, sweeping out in slow motion to move food to the mouth at the center. The body is flaccid, supported and given shape through an internal hydraulic system.

The small brown Keferstein’s sea cucumber is surprising sticky, with small hook-like spicules on its outer skin. It sticks readily to dive gear, twice now I have seen these critters stuck to a diver without the diver knowing. Carefully peeling them off they make a nice photographic subject before allowing these normally nocturnal critters to escape back into a crevice in the coral.

Venus Appears in the Dawn

This week Venus will appear in the dawn sky. Today the planet will be over 10° from the Sun at dawn. This will increase over a degree each day as Venus climbs higher into the dawn sky. Maximum elongation will occur on August 14th.

A few nice conjunctions will occur with both Jupiter and the Moon over the coming weeks. Stay tuned to Darker View for postings that will keep you up to date.

Transit Webcast Comments

Almost a week later and the comments keep coming in… E-mails to the observatory, comments on my blog, people are still pulling me aside to offer their comments in person. It is somewhat overwhelming. Did we really manage to do this?

I spent 6 and change hours with you guys and I really appreciated your dedication to keeping everything up and running for us all around the world. HATS OFF YOU YOU ALL! – Kyle

We are in currently rainy Western Australia, and your webcast was the only way that we got to see the transit at all. My kids’ primary school all tuned into you at some point during the day. 🙂 – Carina

I have been reading the comments as they come in. It is truly gratifying that we managed to share this unique event with so many people.

You made my wife’s day! She was stuck at work & had you and the Keck team in the background for the entire transit! She is eternally grateful! Mahalo nui loa! – Joel

I watched your webcast of the transit from start to finish (with a few breaks here and there). What a great job you guys did! Fascinating, funny and I learned a lot in the process. Thank you for your efforts, and I too look forward to other webcasts from Keck. – Carol

I do not expect we will be doing this again right away. It takes the right sort of event. The one previous webcast was during the close approach of the asteroid 2005 YU55 in November of 2011. That time we webcast from the remote operations room in Waimea. It was also a good success, with great cooperation from the astronomers doing the observation. Need to take advantage of the best opportunities.

Thank you all for your hard work and dedication. I signed on t minus 10 min and stayed until you guys went off the air. I enjoyed myself the entire time. I know for a fact that a lot of people learned tons during this broadcast. My wish, hope and dream is that you continue to do events like this. You all gave it such a warm (beep) behind the scenes feel that made us all feel “part of the science.” The picture in picture was awesome and the graphics support mid-show was much appreciated. I can’t wait until next time! – Eric

We supported an average of between 5k and 6k viewers at any given time, with a total of over 100,000 live views. This viewer count may have badly underestimated the actual number of viewers, often the feed was being shown to large crowds at other public venues. Andrea Ghez mentioned that they were showing our feed at the UCLA event, the feed was on at at least two schools, and our own crowded Hualalai auditorium at Keck Headquarters in Waimea. I keep learning of other crowds the feed was shown to…

“Our observatory in Sonoma County was clouded out much of the day so we had your feed up for our 300+ visitors to supplement live viewing between the clouds. After sunset I went home to watch the rest of the transit on UStream and read the firehose of comments. It was a giant star party! Thanks for all the effort. Best outreach ever!” – Cecelia

A great experience shared with so many people across the globe. Thanks to everyone who made the Transit of Venus such a great day… Our Keck crew and the viewers who were there with us.

The Usual Saturday Dive

Divers Down — Beginning the descent to the reef at Puako

It has been over a month since I have been in the water. We do live on an island, with world class beaches and reefs just 15 minutes from the house. How can we not go to the beach every weekend?

Well, there is work, and these little events like the Transit of Venus. One thing or another conspires to interfere with getting some proper time in the water.

With a holiday weekend on hand it is time to change that. Thus Deb and I joined the Keck crew for a Saturday morning dive. A routine dive at End-of-Road Puako, one of our favorite spots. It was a fair group… Kirk, Mark and Patti, Pete, Tomas and his daughter Angela, Deb and myself, a veritable pod of divers.

We parked under the usual trees, swam out from the usual spot and dropped into the usual set of canyons. I wandered here and there with the camera, looking for anything interesting to photograph. Nothing really special, a couple decent photos including a Keferstein’s sea cucumber. Simply a nice day to be in the water, perhaps the start of a pleasant summer dive season?

Postcard from Hawaii – Kaumana Cave

Shooting Timelapse

A few projects have been completed, but more are in work. I continue to accumulate material for new video projects.

Sometimes I specifically plan to shoot a scene. Other times I simply take advantage of what opportunities present as go about the usual business of life. Driving home the light and clouds catch my attention. I stop along the road, setting up the camera and shooting 20 minutes of time lapse. This will become ten seconds of video, clouds sweeping past the summit of Mauna Kea in late afternoon light.

I have located several more pieces of music appropriate for soundtracks. It is the music I start with, building the video around the soundtrack. With music in hand I can plan, visualizing the finished video, deciding what further scenes I need to go out and shoot.

Keep a camera handy.

The Transit of Venus

We did the Transit of Venus right.

The plan was to stream the transit live from the summit. With access to the Keck facilities we had internet, a comfortable break room, and an excellent vantage point from which to view the entire transit. It sounded so easy at first, just put a camera on a telescope and connect it to the computer for the duration. Easy, in concept. The reality? Not so much.

Venus Transit Second Contact — Transit of Venus 2012, second contact at 12:27pm

It was an incredible amount of work. I had spent several days during the preceding weeks preparing the gear for transit. I admit some of that was fun, an excuse to get the gear out in the day and look at the Sun, even photograph Venus quite near the Sun.

The webcast team consisted of three people, Larry O’Hanlon, the Keck PIO, Mark Senft, a volunteer from our astronomy club, and myself. Larry and I met a HQ to begin our drive up the mountain at 8am.

At Hale Pohaku we picked up Mark and enjoyed breakfast. Here we found a massive buildup in progress, a gathering of troops… Visitor center staff, Hawai’i County police and fire, and the Mauna Kea Rangers, all present in force. Stephanie Nagata, the director of the Office of Mauna Kea Management helped man the roadblock. Stewart Hunter, the head of Mauna Kea Support Services with her in an orange vest. Their preparations looked to be necessary, three hours prior to first contact the crowds of transit tourists were already growing.

Observing the Aureole of Venus

Black drop effect? Bah! I observed a beautiful aureole effect in the minutes leading up to second contact.

The famous black drop effect is seen when atmospheric distortion of the image is quite bad. The effect plagued the early observers attempting to do transit timings. The effect is not seen when the atmosphere allows sharp views of the transit.

Instead, if the seeing is truly good, it is possible to see something far more rare, the aureole of Venus. This is a faint ring of light that has been refracted and scattered through the atmosphere of the planet.

I had not expected to see this, the appearance of the arc of light a complete surprise. But there it was… Very thin, quite faint, a sharp arc of light completing the disk of Venus. The view was steady, with nearly perfect seeing the arc was visible continuously.

Analyzing the observation afterwards I realize it was two elements that allowed me to see the aureole, the excellent seeing offered by the summit of Mauna Kea and good equipment. I was looking through my TeleVue 76mm telescope, using an 8mm Radian eyepiece and a Baader solar film filter. Very good equipment indeed, the optical performance of the system was not going to be a problem.

In the confusion and effort of running the Keck Observatory web stream, I was so glad I managed to free up the few minutes necessary to properly observe second contact. The sight was one of the most beautiful and sublime of any I have witnessed through an eyepiece in my many years of looking through a telescope.

I have been through my photos, nothing captured the faint arc of the aureole, no matter how I stretch the exposure. The best I can do is to record a few drawings in my observing notebook, a poor substitute for the beauty of the real thing…

Transit Of Venus 2012 Aureole — The aureole visible on Venus during 2nd contact, 2012 transit