Skip to content
Professor Gregory Heyworth and his digital media students are using different wavelengths of light to reveal illegible text that could create a sacred, tangible link with congregations lost to the Holocaust. (University of Rochester photo / J. Adam Fenster)

Lights—red, blue, green, orange—flash in Gregory Heyworth’s multispectral imaging lab in the University of Rochester’s Rush Rhees Library, strategically tucked beside Rare Books, Special Collections, and Preservation.

Under the lights and the lens of a multispectral imaging system is a Torah scroll, probably dating to around 1900. Torah scrolls are long rolls of parchment, each suspended between two wooden rollers and containing the handwritten Hebrew text of the Torah. Now entrusted to the congregation of the Temple Society of Concord in Syracuse, New York, the scroll once belonged to a European congregation—until the Holocaust.

After Nazi forces invaded Bohemia and Moravia in 1939, German authorities ordered the region’s Jewish congregations to surrender their religious books, liturgical objects, and records. More than 200,000 items were held in Prague’s Jewish Museum, including almost 1,800 Torah scrolls.

In the 1960s, the organization Memorial Scrolls Trust was established in London; it began to purchase the scrolls, documenting them and repairing them, and then placing them with Jewish congregations around the world, creating a sacred, tangible link between them and congregations lost to the Holocaust.

In 1965, Carol Holstein Killian ’70 and her father traveled to London; at the request of their rabbi, they visited the trust and ultimately arranged for the placement of a Torah scroll with their congregation, Temple Concord. The scroll is on permanent loan from the trust and is used by Temple Concord for selected services. Known as MST#149, it came from a synagogue in Pardubice, a town east of Prague, in what was then Czechoslovakia.

Last fall, Killian and her husband, Ronald Killian ’70, visited Temple Concord to view the scrolls. They inspected the inscriptions written on thin strips of paper around the edges of the rollers—but time and handling had blurred and obscured some of the text. Killian contacted Gregory Heyworth, an associate professor of English, to see if the Lazarus Project could help.

Heyworth calls his research specialty “textual science,” and the multi-spectral imaging group he established—the Lazarus Project, a not-for-profit organization—use different wavelengths of light to photograph and analyze cultural artifacts, using digital imagery to salvage objects whose legibility would otherwise be lost to time.

This March, Killian brought two scrolls—MST#149 and a similar one also held by Temple Concord, its first congregation unknown—to Heyworth’s imaging lab in Rush Rhees Library, to see what could be discovered about the scrolls’ origins.


(University of Rochester photos / J. Adam Fenster)

closeup of a torah scroll, with hands holding a tape measure around its edge

TAKING THE MEASURE: Imaging the text on the edges of the scrolls’ wooden rollers “is very precise work,” says Heyworth—and a learning opportunity for his students, both undergraduate and graduate, who are learning the art of textual science. With Heyworth’s guidance, students made calculations and adjustments to ensure that the scrolls were rotated by exactly 20 degrees and placed in proper relation to the lights and lens.


professor adjusts a scroll under the light of a scanner, as students watch.

PROPER POSITION: Heyworth (left) and Pooja Priya ’20, a student in his Digital Media Studies course, prepare the scrolls for imaging. The process involves photographing artifacts scores or even hundreds of times under different wavelengths of light. The best resulting images are then digitally stitched together to give a complete, enhanced picture of the object.


close-up of Hebrew text written on the side of a scroll

HIDDEN TEXT: Bands on the scroll rollers contain illegible text, which Heyworth believes could connect the scrolls to a lost congregation. Every Lazarus Project venture involves a designated lead scholar—for the Torah scrolls, it’s Michela Andreatta, an assistant professor of Hebrew language and literature in Rochester’s Department of Religion and Classics. She has already determined that the second set of scrolls was created specifically by a German congregation to give to a Jewish synagogue in the United States.


four images of the same scene of students in a lab, each one lit up with a different burst of color.

LIKE FIREWORKS: Each Lazarus Project artifact is photographed under various ultraviolet wavelengths of light, filters narrowing the wavelength of what the camera is seeing, because Heyworth never knows in advance what fluorescence band will provide the most revealing image of the object. He says the best description he’s ever heard of the Lazarus Project process came from a Cambridge conservator: “It’s like fireworks in slow motion.”


people looking at a laptop screen showing multiple small images of a scroll.

SEEING THE RESULTS: Heyworth and his team survey the images as they take them. The work is exacting, but the excitement comes with the results, he says, when the best images are brought together and “the scholar can suddenly see the script.”


close-up of torah scroll next to a colorful keypad.

PRESERVING THE FUTURE: Students in Heyworth’s course Digital Imaging: Transforming Real into Virtual are trained first in handling manuscripts. Gradually, they begin to learn to use Lazarus’s imaging system. “By the time they’re working with an artifact, they know the principles of photography for cultural heritage objects,” says Heyworth.


Read more

close-up of medieval book text
The future of the past
Trained as a scholar of medieval literature, Gregory Heyworth has become a “textual scientist.” He recovers the words and images of cultural heritage objects that have been lost, through damage and erasure, to time. To rescue them, he and collaborators on the aptly named Lazarus Project use a transportable multispectral imaging lab—the only one in the world—to make the undecipherable, and even the invisible, legible again.
students and professors applying sensors to a bust of Frederick Douglass
Digitizing Douglass
In a letter recently acquired by River Campus Libraries, abolitionist and orator Frederick Douglass expresses his pleasure with a bust that can now be reproduced by anyone with a 3D printer.



Return to the top of the page