Featured Photograph
Veil Nebula
© 2026 Matt Anderson
The Veil Nebula comprises the visible portion of the Cygnus Loop, a supernova remnant found in the constellation Cygnus. It lies about 2,400 light-years from Earth. The progenitor star is estimated to be 12 to 20 times more massive than our Sun and exploded between 15,000 and 25,000 years ago.
This image was created using an RGB palette into which I blended some narrowband Oiii data to bring out more of the blue colors. Some of the interstellar dust around the nebula can be seen on the right. Data were captured using a RedCat 71 and processed in PixInsight. The total aggregation time was approximately 8.3 hours.
Matt Anderson
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Saturday, July 25, 2026
Presenter: Danielle Adams, Ph.D.
Title: Arabian Stars of Summer in the Dark Skies of Flagstaff
As Flagstaff continues to celebrate its 25th anniversary as the world’s first International Dark Sky City, Danielle Adams will explore the intersections of dark skies and cultural astronomy through the rich heritage of indigenous Arabian astronomy, with a special focus on telling stories from Arabian skies that depended on seeing stars near the limits of naked-eye visibility. She will also update CAS on Flagstaff’s Silver Jubilee activities so far and preview what comes next as summer transitions to autumn.
Dr. Danielle Adams is a cultural astronomer and dark sky advocate who serves as the executive director of the Flagstaff Dark Skies Coalition, where she uses the inspiration of pristine desert skies to advocate for the modern-day preservation and restoration of dark skies. A resident of Flagstaff, Arizona—the world’s first International Dark Sky City—Danielle is active in informal astronomy education and astrotourism, speaking to various groups about the rich heritage of cultural astronomy in our modern skies as a driver for restoring dark and starlit skies around the world.
CAS Monthly Meetings and Astronomical Programs are held the
Saturday closest to the Full Moon at the Mars Hill Campus of
Lowell Observatory, Hendricks Center for Planetary Studies
Auditorium (6:45 pm - 8:00 pm), unless otherwise noted followed
by refreshments, and informal discussion. Meetings are open and free
to the public.
