Nantucket Maria Mitchell Association Welcomes Gail Walker, Geoff Clayton, and John Barentine as Featured Guests for the January Science Speaker Series, “How Dark is Nantucket’s Night Sky?”

January 13, 2025

NANTUCKET, MA—The Nantucket Maria Mitchell Association (MMA) announces that it will host Gail Walker, Geoff Clayton, and John Barentine, with moderator, Joanna Roche, as featured presenters for its January Science Speaker Series. Their presentation will take place on Wednesday, January 22 at 7pm via Zoom. This event is free to all.

 

“How Dark is Nantucket’s Night Sky?”

Join Gail Walker, founder of Nantucket Lights, Dr. Geoff Clayton, Interim Director of Astronomy at the MMA, and Dr. John Barentine, founder of Dark Sky Consulting, in a panel discussion moderated by the MMA’s Executive Director, Joanna Roche. Learn about the Nantucket Sky Quality Monitoring Project, a joint initiative of Nantucket Lights and the MMA launched in 2022 to collect ground-based measurements to determine how dark Nantucket's night sky is. The data collected to date establishes a baseline for assessing the effectiveness of efforts to mitigate light pollution going forward — and helps us understand how close we are to losing the ability to see the Milky Way with the naked eye. 

 

Nantucket Lights and the MMA will be explaining how this project works and plans going forward. John Barentine, retained to independently analyze the data collected so far, will discuss his findings and recommendations. 

 

Gail Walker is the founder and president of Nantucket Lights (https://nantucketlights.org), an all-volunteer, citizen advocacy group exclusively dedicated to preserving and protecting Nantucket’s nighttime environment and heritage of dark skies. A long-time summer resident of ‘Sconset, she began working on light pollution as a board member of the 'Sconset Civic Association following her retirement from the U.S. Department of Justice where she was a trial attorney for almost twenty years. In addition to leading Nantucket Lights, Walker serves on the Executive Committee of the Nantucket Civic League. 

 

Geoffrey Clayton received his Ph.D. in Astronomy and Astrophysics from the University of Toronto. He has worked for the Universities of Wisconsin and Colorado, as well as for NASA. He spent twenty-seven years as a professor at Louisiana State University. His association with the MMA goes back almost sixty years. He attended lectures and attended Open Nights at the MMA when he was a child visiting Nantucket. He still appreciates the dark skies of Nantucket now that he lives on the island full time. 

 

John Barentine is the Principal Consultant and Executive Officer at Dark Sky Consulting, LLC. He earned a Ph.D. in astronomy from the University of Texas at Austin and previously held staff positions at the National Solar Observatory, Apache Point Observatory, the Sloan Digital Sky Survey, and the International Dark-Sky Association. He is a member of the American Astronomical Society (AAS), the International Astronomical Union (IAU), and the Illuminating Engineering Society (IES), and is a Fellow of the Royal Astronomical Society (RAS). He serves on light pollution committees of the AAS, IES and IAU, and co-leads the Community Engagement section of the IAU Centre for the Protection of the Dark and Quiet Sky from Satellite Constellation Interference.

 

Pre-registration is required to attend Zoom. To register for Zoom, use the registration link below:

https://us06web.zoom.us/webinar/register/WN_--Lju9KeTGGrxRJ4Dzihzw



The Maria Mitchell Association was founded in 1902 to preserve the legacy of Nantucket native astronomer, naturalist, librarian, and educator, Maria Mitchell. After she discovered a comet in 1847, Mitchell’s international fame led to many achievements and awards, including an appointment as the first female professor of astronomy at Vassar College. Maria Mitchell believed in “learning by doing” and today that philosophy is reflected in the MMA’s mission statement, programs, research projects, and other activities. The Maria Mitchell Association operates two observatories, a natural science museum, an aquarium, a research center, and preserves the historic birthplace of Maria Mitchell. A wide variety of science and history-related programming is offered throughout the year for people of all ages


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For Immediate Release

January 13, 2025

Contact: Joanna Roche

jroche@mariamitchell.org

Recent Posts

From The Rear

By Jascin N. Leonardo Finger • November 3, 2025
I am not so sure our founders would love that title but the image is of the Maria Mitchell Vestal Street Observatory (MMO) “from the rear.” I love this image as it is really the only one we have – unless you count the one that is taken from farther away and from further into the backyard of the Mitchell House. That one allows you to see the natural slope of the Mitchell House back lawn which would be altered when they added the Curator’s Cottage. Both of the images were taken before the Curator’s Cottage was added at the back of the Mitchell House in the early 1930s – and this one you see here was taken before 1922 when they added the Astronomical Study onto the MMO. It also shows the original dome – which was copper – before it was replaced in 1951 – which is the current dome. The copper did not hold up to our climate here – salt spray, damp, fog. But the new one, shipped over from England, has held up well. The current dome was donated by Margaret Underwood Davis (MMA board president at the time), in memory of her son, Cushing Davis who was an amateur astronomer. Margaret Davis served as president from 1930-1946 and again from 1949-1953. The image tells you some other things too. For instance, the grape arbor behind the Mitchell House is supposed to be Peleg Mitchell’s (Maria’s uncle) grape vine – I have blogged about it several times before – and you can see it in this image. You can also see how the Milk Room connects to the 1850s kitchen. The 1850s kitchen was added by Peleg Mitchell Jr and it’s the first little wart you see with the white pipe attached. The next wart is the Milk Room – also added by Peleg – it’s the one with the shutters on the window. Both still exist it’s just the Curator’s Cottage was attached in the 1930s. You will see another chimney too. It appears alongside the white pipe. That is likely the original chimney to what is now the Astronomer’s Cottage at the MMA. We acquired the Cottage in the 1920s but I believe all of the additions, and the removal of the chimney, were done before we were given it.  Fun! JNLF

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Stone Monument Cleaning

By Jascin N. Leonardo Finger • October 27, 2025
I have discussed the process and importance of the proper cleaning and conservation of historic stone monuments – cemetery stones – several times before in this blog. This year’s Mitchell House intern, Talia, was also (happily) last year’s intern and due to her college graduation in early June, she missed the annual workshop I have been running concerning the proper care and cleaning of stone monuments. A stone monument enthusiast, I promised Talia we would clean a stone before she left this season. Happily, we did on September 26. We returned together to clean the stone of Charlotte Burdett, Captain of Barzillai Burdett, one of my favorites. I had come across his stone accidentally when prepping to clean another stone for the workshop in June. (I test stones about a month before I clean them to make sure the cleaner will be okay and there are not any issues with it among other things I check for.) I tested the two Burdett stones and after the workshop was over, I remained in the now fairly hard rain showers to clean his stone. At that point, I was sopping wet and I told Charlotte I would return. I always feel badly when I have to return months, or a year, later to complete the stones in a lot. We made fast work of Charlotte’s stone – a little under an hour but the Burdetts’ stones are relatively small and simple. It was also a beautiful day to complete the work. The remainder of this blog will be a bit long because I wanted to share some information on Captain Burdett. He and Charlotte had no children and I have long loved their simple, small gambrel house on North Liberty (not likely a gambrel when they inhabited it). So here we go. In the history of catboats on the island, the Dauntless is my favorite catboat, likely because the owner/captain is a Nantucket “rockstar” of mine. His small gambrel roofed house still stands along North Liberty – a favorite house of mine before I learned a “rock star” inhabited it! The Dauntless was sometimes referred to as the “star boat” because a large red star was sewn on her sail. Built and captained by boatbuilder, Captain Barzillai Burdett, the Dauntless took visitors from the wharves out to the bathing beaches and on clambakes and fishing excursions, beginning in the early 1870s. Two logs of the Dauntless attest to her being a busy boat, enjoyed not only by the passengers, but by her crew as well. The logs live at the Research Library at the Nantucket Historical Association (NHA). At least one was kept by Benjamin Sharp. When he was young, he served aboard the Dauntless with Captain Burdett. Sharp would become a revered island resident. Born in 1858, Dr. Sharp, a zoologist, was a founder of the Nantucket Cottage Hospital, served as Nantucket’s representative in the state legislature, and was an avid sailor and fisherman. In 1904, with Henry W. Fowler, he wrote T he Fishes of Nantucket . Times spent with Captain Burdett must have greatly influenced Sharp. One of the logs dates from July 2 through August 28, 1873, and is a daily record of fishing parties and clambakes the Dauntless provided. The log also includes the names of passengers and where they came from, as well as messages they left for Captain Burdett. Included in the log is this poem: When you go to a clambake, Plenty of chickens you should take, As then you have a second dish For those who do not like shell-fish, For all should indulge, as best they might, “The keen demands of appetite.” The log also has lots of wonderful, comical illustrations − largely drawn by Sharp. Burdett also built whaleboats during the heyday of whaling on the island. Fishing was also his economic mainstay. When summer was over, he would use the Dauntless to fish as many other catboat owners did. The tourist trade had come second to fishing and whaling on the island but, in many cases, may have made fishing secondary in income once tourism took off on island and became much more lucrative. In 1893, artist Elizabeth Rebecca Coffin (a distant cousin of Maria Mitchell’s and one of her students at Vassar), painted a lovely double portrait of Burdett and Benjamin Pease in Burdett’s shack on Old North Wharf called “A Tale of the Sea (Captain Burdett In His Boathouse).” Today, it is in the collection of the NHA. PLEASE NOTE: ONE SHOULD NEVER CLEAN THE STONES IN A CEMETERY, WHETHER THEY ARE YOUR FAMILY’S OR NOT, WITHOUT PERMISSION FROM THE CEMETERY SEXTANT AND HAVING BEEN TRAINED TO PROPERLY CLEAN A STONE. There are quite a few TikToks and other social media posts and people are doing the work incorrectly and damaging and further eroding the stones. JNLF
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