Monday, 31 August 2009

(body)Surfing and Sunburning

Filed under: Maryland — Tags: , — George Privon @ 18:50

I spent the past weekend up in Maryland, at Assateague Island hanging out on the beach. I went up with Aleya, one of her climbing partners, and a bunch of their friends. It was a great group of people and we had a good time. We all arrived in the early afternoon on Saturday and spent most of the rest of the afternoon and evening playing in the water and on the beach. Ryan brought a bodyboard, so that got passed around.

There was a quick break in the afternoon to go kayaking. An hour was spent on the bay side of the island, kayaking in probably knee deep water. We saw several of the wild horses for which the island is known, grazing in the marshes. Oddly enough, I somehow managed to leave the island without a single picture of the horses.

We had a good dinner as the sun was going down, followed by s’mores. We took advantage of the copious illumination provided by the moon to walk back to the beach. The stars were out and the group relaxed on the beach while lightning flashed at the distant horizon. I managed a few night shots with the moonlight. Not very conducive to star trails though.

Sunday was quite a nice day as well. The bugs seemed lighter on the bay side, and nonexistent on the sea side. The late morning and early afternoon was spent back on the beach. I nursed a sunburn a bit and did a bit of bodyboarding. An elaborate sand castle was constructed with several sets of walls and moats enclosing a seashell-topped tower. This lasted only for a short time as the rising tide quickly erased all traces, even as we were building.

We left the island in the early afternoon and drove back to DC with the rest of the beachgoers. Fortunately the traffic wasn’t too bad.

Pictures are available here: Assateague Island on flickr

Wednesday, 26 August 2009

Ireland Trip Summary

Filed under: Hiking, Ireland — Tags: — George Privon @ 03:39

Over the past few months I have compiled and uploaded journal entries and pictures from a week and a half in Ireland. It was a great trip with a great group. I won’t be adding anything content-wise here, but merely want to provide chronological links to the posts and pictures.

Enjoy!

Ireland Days 9 & 10: Dingle Peninsula & Travel Home

Filed under: Hiking, Ireland — Tags: , — George Privon @ 01:39

The following is an except from my trip journal during my 11 days in Ireland.

30 May 2009 15:00

Right now I’m on the flight to JFK. We’re over the Atlantic Ocean, west of Ireland. Judging by the in-flight map, we won’t get a view of Iceland as our route is too far South.

We had a great last day on the Trek yesterday. After breakfast we assembled once again and followed Tim out in search of adventure. The morning was spent with quick stops at a variety of sights and archaeological locations. Tim says there are over 2000 known sites, but many more likely exist.

Our first stop was at the former house of Viscount. Now it an all female boarding school. However, it has several Ogham stones, the earliest written form of Irish. It was interesting to see the old script.

Ogham Stone Ogham Alphabet

The next stop was a a bluff overlooking the sea. It was a nice short hike, but with great views, including an island that looks like a sleeping giant. The best view of that island came a bit earlier as we went over a pass.

Hiking Flying

It was fairly breezy on the bluff and we got to watch the gulls playing. Several people also got to chase their hats around!

Ocean Panorama

We then made a quick stop down the road at a pier made famous by a photograph of sheep all over the dock.

Island Bound

Yesterday featured a lot of archaeological and historical sights. With this theme, we visited an old chapel on the pilgrim’s route to Mount Brendan. It is the only remaining building of its type which is totally intact. I believe it is called a Corpal Structure, mortraless construction which is effective at keeping rain out. This particular one would have been a place for pilgrims to stop and say prayers on their 18 km trek to Mount Brandon. We spent a bit of time looking around before leaving to have lunch.

Church

Our lunch location was quite cool: a partially reconstructed ring fort! Wall had been built inside the main outer wall where buildings were likely located. It was up on the side of a hill and so also afforded a great view.

Lunch at a Ring Fort Group

After lunch we went to the ruins of a nearby church. Its architecture resembled that of Cormac’s Chapel at the Rock of Cashel. While not dedicated to St Brendan, the church had what appeared to be an image of a boat on one of the outer walls, probably a nod to St. Brendan. Tim also showed us a sundial in the cemetery area.

Statue and Church Sundial

Next up was the last hike of the trip. We did a several mile trip up a bluff overlooking the ocean. As with earlier in the day, the wind was blowing a good bit. The views were fantastic though. We found sea shells on top of a cliff about 30m above the ocean. Gulls would bring their catches up here to eat.

Hiking Up Chris and Peter Fence

There was a nice cloud over Mount Brandon, shaped by the winds blowing on top of the mountain. We also see the three sisters behind us in the distance.

Cloud Over Mount Brandon Dad and Mount Brandon Ocean

When we reached the highest point on the hike were were treated with the ruins of a Napoleonic watchtower. It had been built by the English to be sure Napoleon didn’t invade Ireland. We stayed around the ruins for a bit to enjoy the views and a piece of chocolate. The descent to the bus was fairly quick.

To the Watchtower Watchtower Ruins

Countryside

The final scenic stop of the trip was St. Brendan’s creek. This is the site of his departure on a voyage in which he is supposed to have discovered North America. It would have happened in the early 6th century. His trip was attempted by someone in the 1970s. The successfully replicated his route (with a replica of a possible ship), indicating that the journey was plausible.

Departure Point

We then had our last group dinner in Dingletown. My family and I walked around the town a bit, seeing some of the fishing boats in the harbor. At 22:30, we had the last group event: a slideshow of the trip. It was cool to see some of Tim’s pictures and remember the things we’d done on the trip.. 10 days of fun and adventure in Ireland.

Harbor

All of the pictures from Day 9 are available here: Ireland Day 9: Dingle Peninsula on flickr

Testing Equipment Modifications

Filed under: School — Tags: , — George Privon @ 01:01

About a year ago, the Astronomy Department here at UVa purchased new Celestron computer controlled telescopes for our 100 level observing class. They have worked quite well and the students seem to like them. The GPS enabled computerized control system makes finding faint targets more straightforward than the earlier all-manual telescopes we were using. Overall they were a great addition.

One minor issue we had been having was with the finderscope mounts. They seem to be designed for semi-serious amateurs: ones who didn’t have a dedicated telescope location, but wanted a decent size mirror (8″). The finderscope was easy to put in and remove, but this also meant that it could easily fall out as students moved the telescopes in and out of the lab room. After having a number of them eject themselves onto the floor, we decided a new mounting solution was needed.

Our machinist drilled and tapped some new holes, converting the mount into a 6 screw mount (from a 3 screw + O-ring mount). Earlier this evening myself and another TA from the department set it up for a test run. While the 6 screw style mount gives you more degrees of freedom, it does make the alignment a tad more difficult. Certainly manageable though.

While everything was set up we opted to look at some objects on the sky, and test out a 2″ eyepiece that was found during inventory. Jupiter looked superb! It was definitely the best view of it I’ve had through a telescope. We also looked a Andromeda (M31) and M13. Both were nice, although a bit hard to see through the haze of light pollution in Charlottesville. Turned out to be a nice mini-session of observing. There will be much more of that as the semester progresses…

Sunday, 23 August 2009

Ireland Day 8: Dingle and Mount Brendan

Filed under: Hiking, Ireland — Tags: , , , , — George Privon @ 16:00

The following is an except from my trip journal during my 11 days in Ireland.

28 May 2009 15:45

Today is half-transfer, half-free. In the morning we had our last breakfast in Kenmare (at Virginia’s B&B). I had an excellent dish consisting of a slice of bread with pears on it. This in turn was covered in blue cheese and baked. As it was served, it was topped off with two strips of “streaky bacon” and accompanied with a sauce. Delicious. The lady running the B&B (along with her husband) had won and award for this recipe.

After leaving Kenmare we began driving to the Dingle Peninsula. we stopped three times along the way. The first was another gorgeous overlook above Killarney National Forest. A few pictures and we pressed on.

Killarney National Forest

The next stop had three interesting features. The most obvious of which was the ruins of a castle. The walls were in relatively poor shape and the building showed evidence of the dynamiting that took place during the Cromwellian era. Next to the castle was a nice storm beach in a little cove. There were many huge rocks which had been tossed up on the shore by storms. Quite cool.

Ruins

The third feature was a holy well. This particular well was dedicated to St. John the Baptist. Each year on the 29th of August, people assemble to pray at the well. Several us of, myself included, had a sip from the well.

Walking around a holy well

The rest of the morning was spent driving to Dingle, on the Dingle Peninsula. We checked into the Lighthouse B&B upon arrival and then went into town for a quick lunch at Harrington’s Family Restaurant. Very good fish and chips.

Most of the group had dispersed and went off to do their own thing. Tim and I dropped Dad, Peter, and Steve off at a golf course to play 18 holes. We were planning to go climb Mount Brandon but it looked to still be covered in clouds at 15:00 so we opted to hold off for a while to see if the weather improved…

28 May 2009 23:15

Tim and I met again at 16:00. The weather still looked iffy, but we decided to drive out and see. Initially it didn’t look good so we started driving towards a section of the Dingle Way just north of the mountain.

However seeing sunlight on the tops of some lower peaks we decided to go back and try Mount Brandon. The hiking started just before 17:00 and followed white marker posts through a steep pasture. The climb gained elevation the entire way. The terrain was a mixture of rocky trail and soggy wet bog. Impressive that some pilgrims do the climb barefoot.

The way is also marked by 15 wooden crosses (I believe related to the rosary). By the 5th cross we were in the clouds. There was a standing stone by one of the crosses on the way up, suggesting the pilgrimage was in use long before St. Brendan.

Cross IV Tim and Standing Stone Tim Hiking

After an hour and 15 minutes we reached the summit, still in the clouds. We climbed up the ~730m quite quickly. My calves were pretty beat. The summit was interesting, with a large carin on top and a large wooden cross. There were also earthen/rock mounds: what appeared to be older carins, now covered by moss and grass.

After about 10 minutes on top, the clouds parted to give us an amazing view. We were in the sun, with a sea of clouds stretching below us. Then a few seconds later, we were engulfed by clouds once again. Very spectacular. It happened a few more times during the half hour we spend at the summit.

Summit

We practically ran down the mountain, reaching the car 2 hours and 50 minutes after we started. Excellent climb!

Tomorrow is my last full day in Ireland. It sure has been a fun trip. Every view here looks postcard worthy… amazing place.

All the pictures from Day 8 are available here: Ireland Day 8: Inich Beach, Mount Brandon on flickr

Tuesday, 18 August 2009

Wedding Weekend

Filed under: New York — Tags: — George Privon @ 23:49

This past weekend was a busy one, but very fun. Two of my friends were marrying their longtime girlfriends on Saturday in New York. I was fortunate enough to be part of David’s wedding in Geneva. That was Saturday morning with an afternoon reception. It was a very nice ceremony. The reception was outside, fortunately it was under a tent, so it wasn’t as hot as it could’ve been (though it was quite warm!).

As David’s reception was winding down, I changed out of my tuxedo, hopped in the car and drove to the Southwest corner of New York to attend the rest of Lars’s wedding. Sadly, I missed the ceremony, but I managed to make most of the reception (minus dinner, but that’s ok.. I was stuffed from David’s reception). It was a great to see everyone, especially those I hadn’t seen in a long time.

The long drive from Geneva to the resort (200 miles) was absolutely worth it. Great to see friends and catch up.

Tuesday, 11 August 2009

Adapting to changes in models

Filed under: Astronomy — Tags: , — George Privon @ 14:32

It is just the continuing progress and refinement in models of physical phenomena. But it makes things tricky at times. I had done fits for my thesis using a set of models for the emission from the torus surrounding an AGN. The fits were useful and provided reasonable answers. Since then, an updated set of models has been released. Before publishing the results from my thesis as a paper, I compared the old and new models to make sure the results were consistent.

After a few days running fits, I see that the results are broadly in agreement, but different in important ways. For example, with the same set of geometrical parameters, the depth of the silicate absorption at 10microns changes significantly between the old and new models. Fortunately it is likely the models are improving, so the newest ones should be the most physically accurate. However, it means I need to re-fit the data with the new models to derive accurate parameters for the AGN. That is the task ahead.

Saturday, 8 August 2009

Blast from 2005 – Trad climbing in Idaho

Filed under: Climbing, Idaho — Tags: , , — George Privon @ 22:41

After getting Aleya her footage from a roadtrip to Utah, I was inspired to go through some of the video I have recorded over the past years. I know I have two tapes from the Astronomy Ironman from almost two years ago. However, sorting through and editing that would be a dauting challenge for my first attempt at serious video editing.

Fortunately, I found something a bit shorter and more manageable… in 2005 I got together with some of my scoutmasters from Troop 94 in Boise, ID. We headed to McCall, ID with the goal of climbing the Regular Route (5.6). It is a nice long route, coming in at around 10 pitches! The climbing is quite slabby, and though it is easy, quite runout in some places. I had brought my miniDV video camera along for the trip. After a bit of editing, a lot of trying different software, and even more re-editing, I came up with this short little video of the climb.


Slick Rock from George Privon on Vimeo.

Friday, 7 August 2009

Ireland Day 7: Killarney National Forest

Filed under: Hiking, Ireland — Tags: , — George Privon @ 18:34

The following is an except from my trip journal during my 11 days in Ireland.

27 May 2009

This morning was another wet one. As it wasn’t forecast to clear until the afternoon, we opted for plan B, a different hike through Killarny National Forest (Ireland’s first national forest). We packed our lunches after arriving at the park. We then hiked over to Muckrock House, which is located in the park.

Starting out on the hike we walked a few km until we reached an old Abby. I enjoy walking through and photographing ruins, so it was a nice stop. It appeared be undergoing some restoration as well.

Abby Ruins

The next major sight along the hike was a Yew forest. This particular one was about 200 years old, so relatively young. It was a cool forest, with only moss growing on the ground.

Yew Forest

Our lunch stop was at the edge of one of the beautiful lakes in the park. Unfortunately, it was infested with midges. We continued on after lunch, hiking around the lake.

Lunch Stop Panorama

The last major stop we made was at a nice cascading waterfall. Oh, if they only froze in the winter! As with most rivers here, they seemed to be turned brown by the peat and bog.

Waterfall

On the way back to Kenmare we stopped at “Ladies' View”, which has an amazing view of the park. It was named this after Queen Victoria and her ladies and waiting, as they had stopped at the lookout during a visit.

We arrived back in Kenmare around 15:15. The rest of the afternoon was spent exploring the town and picking up some presents and postcards. We went to a pub after dinner and listened to some traditional irish music. Two accordions and a guitar. It was quite good!

All of the pictures from Day 7 are available here: Ireland Day 7: Killarney National Forest on flickr.

Wednesday, 5 August 2009

Top Boss

Filed under: Astronomy, Sports — Tags: , , , — George Privon @ 23:37

It’s obvious, but I haven’t posted in a while. Things have been quite busy here lately, both on the research front and school front. The semester is approaching. As I am a half-TA now, this means it is almost time to get back into lab mode. An additional factor is that I have assumed the “Head TA” position for the year. So in addition to my lab duties, I get to assign TA duties to the other TAs and act as the interface between faculty and TAs. So far it is a fun job. I have spent a good portion of the last week determining which TA jobs need to be filled (it changes semester to semester) and what the preferences of individual TAs are. I think I have the schedule mostly sorted out, with some minor issues remaining.

I have also been managing to get some research done, mostly related to the HST dataset on a Seyfert Galaxy. Nothing exciting to report on that yet.. but hopefully soon. I also have an idea for an outreach tool for astronomers interested in distributing their images to the general public via google sky.. That is in the development stage. More on that once I have written and tested the programs for it. :)

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