One Astronomer's Noise

Entries from March 2009

Where's Nicole?

March 31, 2009 · 5 Comments

I’m still around. Promise! The last few weeks have been super busy with travel, being sick, and work. Coming up in the next few weeks are my thesis committee meeting, a regional conference for my grant, a bellydance workshop, and a class project to design and guide, and generally trying to keep my project moving!  Also, I was reminded that I have another podcast to create for the 365 Days of Astronomy, and I think it’s going to be a good one! Check out my first one when it premieres on April 2nd and come back here for a special podcast page.

So what’s been going on?

  • Carnivals #95 and #96 have been posted and are great reads. Ian O’Neill was kind enough to include me very late in the latter carnival. You can always count on me to bring some tasty Virginia wine! Seriously, go catch up on all the great astronomy and space news. Thanks again to the now 10 years old Universe Today for organizing this weekly dish o’ space!
  • Alice’s AstroInfo has moved! Make sure to check your bookmarks and feeds and links!
  • SarahAskew reminds us that this is a big week for astronomy during this great International Year of Astronomy! Unfortunately, this is my busy time, but some of these events are not to be missed. One of the events, “Around the World in 80 Telescopes,” will feature my favorite destinations/radio telescopes: The Very Large Array at 2:20 PM EDT and the Green Bank Telescope at 3:00 PM EDT. There will also be a webcast from ALMA in Chile at 11:00 AM EDT.
  • Charlottesville now has Google Street View! And just in time for this amusing post on Google “ghosts and aliens” by
  • BSG has finally ended. Yes, I have some issues with the final episode, as epic as it was. I will just point you to some great commentary by carr2d2 on Skepchick, since I agree with much of what she says. SPOILERS, of course. In addition to my philosophical views, it’s just lazy story-telling.

What’s coming up?

  • I finished Death from the Skies! Review forthcoming…
  • The VAA did a viewing of Expelled… is it worth even writing about?
  • The VAA also hosted a great talk last week by J. Anderson Thompson on “Why We Believe in God.” That is worth hearing about.
  • Some fun radio astronomy news items… hopefully I’ll get to them before they get too old!
  • I love Eureka.  I’ll tell you why.

One final update… this gift made me so happy…

The Pluto Files, autographed by Neil deGrasse Tyson! Thank you, Tim. :-D

Categories: astronomy · education · general · science · skeptic
Tagged: , , , , , , , , , , , , , , , , , , , , ,

Ruby Payne-Scott, pioneer of Radio Astronomy

March 24, 2009 · 7 Comments

In celebration of Ada Lovelace Day, where bloggers have pledged to write about their favorite woman in technology, I am compelled to share a little bit of the story of Ruby Payne-Scott.  It is only in the last few years, due in large part to NRAO scientist Miller Goss, that her great story has come to light.  I’ve twice seen talks by Miller on the extraordinary life of this woman, and hope to see what more information they uncover about her in the future!

Ruby was born in New South Wales, Australia, in 1912, and showed extraordinary talents for math and science.  She had to break away from her family in order to pursue her studies, in a headstrong and confident way that seems to have influenced much of her life’s path. Graduating college in the middle of the Depression, it was difficult to find work, let alone as a female physicist, but she had a lucky break with Britain’s, and thus Australia’s, involvement in World War II.

Ruby was one of three women that worked for CSIR, the Australian Council for Scientific and Industrial Research, on radio physics, or radar research.  She deliberately broke rules for women’s dress code and smoking, always demanding equal respect and treatment.  And with tight budgets, hands-on work, and difficult problems to solve, she was indeed treated as “one of the boys” in her research lab.

As the war was ending, one of Ruby’s collaborators, Joe Pawsey, decided to use the old military equipment and take a stab at the young, mysterious field of radio astronomy. Karl Jansky’s discovery of radio waves from the galaxy had attracted little notice from the astronomical community in the 1930′s, but Grote Reber had begun to publish his own maps of the Milky Way with his home-grown radio telescope in 1944.  CSIR took a leap in funding the pioneering efforts of radio astronomers after the war, and Ruby was at the forefront. She was involved in investigations of solar flares and the radio emissions from them, which in the near future may be used to warn of incoming solar storms that threaten our technological infrastructure.

Ruby was a brilliant scientist pioneering a brand new field. But since radio astronomy was not yet published in journals, her findings would go largely unnoticed for decades. Also, her career as a researcher was short-lived.  Ruby again bucked the establishment by making no secret about the fact that she was living with a man, Bill Hall, in the 1940′s. However, it soon came out to her colleagues that she was indeed married to Hall.  She kept the marriage a secret since the Commonwealth would not keep in full-time employment a married woman.  Her collaborators respected her as a scientist and friend and kept working with her just the same, but when she was pregnant with her first child in 1951, she resigned. The CSIR would have gladly hired her back to continue her research at full pay, but as a temporary employee, like all other married women at the time.

Ruby Payne-Scott focused her mind on her family, and her children fondly remember her as a loving mother and wife. She later became a schoolteacher, greatly admired by her students who never knew of her earlier scientific achievements.  In 1981, Ruby died at the age of 68 with Alzheimer’s disease, under the loving watch of her husband.

Read more about this amazing woman in a transcript of a 2004 “Science Show” on ABC Australia. Her biography Under the Radar: Ruby Payne-Scott, the first Woman Radio Astronomer by Miller Goss and Richard McGee is set to be released later this year.

Categories: astronomy · science
Tagged: , ,

Happy Equinox!

March 20, 2009 · 2 Comments

Happy Vernal Equinox! It is officially the start of spring in the Northern Hemisphere (autumn for those in Upside-Down-Land).  This is quickly becoming my favorite season in hot, humid Virginia.  So if it’s the equinox, that means we can stand an egg on end at this very moment. Right now!  Here goes…

Ta Da!  Okay, no, not really.  I stopped to take this picture a week ago while cooking, because I can even be easily distracted when I cook.  Standing an egg on end just takes a little patience, not an equinox, as the Bad Astronomer has explained many a time. What the equinox DOES mean, however, is that the path of the sun through the sky roughly follows the celestial equator today, giving us a day with 12 hours of light, and 12 hours of dark.  Or, the equinox is the moment when the sun’s path crosses the equator on the imaginary (but useful) celestial sphere.

Path of the sun through the sky on the equinox at roughly Charlottesville’s latitude. By Tauʻolunga.

The sun’s path throughout the year is called the ecliptic. The ecliptic crosses the celestial equator at two equinoxes.

The illumination of the Earth by the Sun on an equinox. All images from WikiMedia.

But maybe I took that egg photo on the last equinox, and I’m part of a vast Big Science conspiracy determined to convince you that the equinox has nothing to do with eggs standing on end. How would you know for yourself? Try it! This is an experiment that anyone can do. And honestly, I don’t make enough money for someone deeply rooted in a vast conspiracy.

I’ll stick to the more common and beautiful signs of spring…

Go, celebrate with the Tree Lobsters.

Categories: astronomy · science · skeptic
Tagged:

A Bracket that I can get into…

March 19, 2009 · Leave a Comment

I am currently an astronomy tutor for Cavalier Athletics, and I love it.  I get to work with student-athletes, many of whom are first years, and help guide them through college astronomy, in the midst of their crazy schedules. One of the stipulations of this job is that I cannot participate in any gambling on any NCAA sport, or its professional equivalent.  Not that this matters much to me, since I no longer know enough about sports to do so anyway. I could fill out a March madness bracket if I wanted to, as long as I don’t receive any sort of prize (other than bragging rights.)

NASA is hosting a March madness bracket of their own, and I can compete in this one, since rocket science, astronomy, and planetary science are not NCAA sports.  Mission Madness asks users to fill out a bracket with competing space missions, then vote for their favorite! Here’s my bracket:

Click for full version.

We should get a UVa Astro pool going, with payout in beer and/or baked goods, the standard currency around here.

Categories: fun
Tagged: ,

Yet another Ponzi scheme…

March 19, 2009 · 5 Comments

Ponzi schemes have been a hot topic in the news ever since Bernie Madoff was charged with being the center of such an operation late last year. These are fraudulent financial investment schemes in which investors lose their money to the perpetrator at the center.

Last week, an Albemarle County man was charged with running his own Ponzi scheme.  I had skimmed by the headline last week, but today I noticed a copy of the Daily Progress article in the astronomy department’s main office with a certain section highlighted:

“Using his background in astrophysics,” the court filing quotes, “Donnelly developed a proprietary model of financial markets using algorithms derived from the quantification of a fractal wave frequency model which he named Blue Logic.”

In truth, he had never made any trades, but was clearly using his BA in astrophysics from UVa (1982) to fool investors into thinking he had an edge in the market! I have only one thing to say…

With props to the Bad Astronomer.

Okay I have a few more things to say.  Granted, this is not on the level of the stereotypical mad-scientist-evil-genius using science to enslave humanity…  but to use science, or even to pretend to use it, for anything other than the search for objective truth and empowering the human species to better itself and its environment is just reprehensible.  I never thought I would worry much about the morality or immorality of astronomy, since we don’t use embryos or deal with food production or build cars or anything like that. Astronomy is incredibly important to how we view ourselves, our species, and our place in the universe. And surely, many of the techniques used in astronomy are also useful in photography, communications, defense, and even economics. Just be skeptical anytime someone offers to use their knowledge of astrophysics to make you a quick buck.

Really. What a jerk.

Categories: science
Tagged: , , ,

Getting settled…

March 18, 2009 · 1 Comment

Trying to get comfortable in the new locale, doing lots of work, and getting ready for a great weekend away… so I’ve been quiet! Unusual for me.

But I have to celebrate today’s warm weather and note that it’s getting closer to BBQ season. Remember the bacon explosion? Hijinks Ensue gives it a new twist.

Please, please, please take half an hour to watch “Why is Science Important?” by Alom Shaha, a science teacher that explores the many reasons why science and science education are crucial to individuals and our society. It’s very well done and should be shown to teachers everywhere!

Oh, and lest I forget, Carnival of Space #94 is hosted by Out of the Cradle.

Categories: astronomy · education · fun · science
Tagged: , , ,

New Location!

March 17, 2009 · 2 Comments

Welcome to the new location of One Astronomer’s Noise! I’ll be slowly updating my links all around, please update your feed reader and links and such. I hope you continue to enjoy my ramblings and please continue to comment on them. You can now also email me via a contact form linked on my About page. (Thanks to Mooeypoo for the suggestion!)

Categories: general
Tagged:

Ben Goldacre on MMR, autism, and the media

March 13, 2009 · 1 Comment

Ben Goldacre has an important message about the MMR vaccine, autism, and children’s health. In fact his website, Bad Science, is chock-full of science, pseudo-science, and those that can’t tell the difference.

And, despite his blog title, the hair is adorable. Very Tom Baker-esque. Also, I’ve added that “Talk nerdy to me” sticker to my Amazon wishlist. Nerd boys FTW.

Categories: science
Tagged: , , , , ,

Marking the PAPER Trail

March 12, 2009 · 3 Comments

So last week I finally got out to Green Bank, West Virginia, to do some field work on our array, PAPER, or the Precision Array to Probe the Epoch of Reionization. It’s quite nice to run around outside and work on something physical to jumpstart your brain after being zombied-out in front of your computer. *sigh* Okay, also, I’ve been spending a lot of time developing assignments (loosely based on PAPER) for a radio instrumentation class, and needed to get back into actual research!

PAPER is an interferometer that is working in the frequency regime around 150 MHz. (Pay attention to an upcoming 365 Days of Astronomy podcast to hear all about the science!) We have a prototype sixteen antenna array at the NRAO’s site in Green Bank, in the Radio Quiet Zone. We have this great little field called “Galford Meadow” with a small equipment hut in the center and the antennas on a circle around the hut.


The Galford Meadow from Google Maps. You can see the hut, two tiny antennas, and the road. Okay, by road, I mean tire tracks.

I have proposed to add three outrigger antennas at greater distances from the hut, thus making longer baselines for better spatial resolution. Hopefully, this will give us an idea of the bubble, bubble, toil, and trouble that the ionosphere will cause for our imaging!

For this very first step, my friend and co-worker and I scoped out the farthest corners of the field and placed markers. That is what I snapped a picture of and posted a few days ago.


Looking back at two more antennas and the hut, from a pink-marked stake. The hut is almost 900ft away.

We then used a theodolite to survey the positions of the stake and mark appromiately 100-ft steps back towards the circle. This was really cool, since that means I got to learn how to use surveying equipment! It helps to know quite well where the antennas are in order to then calibrate the data. Also, my dear friend has very well calibrated steps and could walk almost exactly 100-ft just by counting paces. She was frequently within a fraction of a foot! That always helps.

We also explored the outer edges of the field, which seems to be bordered on all sides by a small metal fence from long ago. Hopefully, the metal won’t disturb our ability to take and analyze data too much. There seems to be a clearing in the northeast corner which can hold even longer baseline outriggers, as long as the wires can safely cross a small creek.


Frozen creek!

While we did this, two more of our friends and co-workers (we’re a close-knit lab) were out building new groundscreens for antennas that will be shipped to Western Australia. These just look cool when all assembled around our shipping container.


Field of telescopes, with the GBT feedarm in the background.

And, we got a visit from a girls high school group that was visiting on site! Sue Anne, Green Bank’s fabulous outreach and communications officer, noticed that we Charlottsville ladies (our lab is also mostly female!) were on site and asked if we’d be able to show the girls what we do. Of course we would! They seemed pretty interested in what we showed them, and they had a lot of good questions about our college experiences and how we got into science. So I was unintentionally doing some She is an Astronomer outreach. Cool.

Hope you enjoyed this little peek into the world of PAPER!


Next to 85-2, we are small but mighty.

Categories: astronomy · outreach · science
Tagged:

PAPER Trail…

March 10, 2009 · Leave a Comment

I keep promising that once I get the time and mental power to write, I’ll post some stuff on PAPER. I think last week’s Green Bank trip would be pretty fun to recount. But I’ve been so busy working, thankfully, that I haven’t been able to muster anything worthwhile. So, here’s a tease…

Categories: science
Tagged: ,