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Featured Photograph

Aurora Borealis from Haukland Beach

Composite sequence of the lunar eclipse on 8 November 2023. In the upper right the full moon is shown shortly after entering earth's penumbra at 1:11 AM. Shadowing of its western limb is not yet apparent. In the final image to the lower left the moon is in full umbral eclipse at 3:30 AM. Exit from eclipse was not captured due to low elevation over the San Francisco Peaks.

All images were captured at prime focus through a 10" f/6.3 Meade SCT with a modified Canon T5i camera. Exposures ranged from 1/1000s at ISO 100 to 1/25s at ISO 12800.

Richard Edmonds

The featured photograph is any astronomical photograph provided by one of our members. If you are a member and have a photogaph you would like to submit please send the request along with the photograph and description to: info@coconinoastro.org.

Members contributions on the Mars and Saturn Conjunction

Jupiter Saturn Conjunction

Upcoming Events for the Year

Activities for April 2023

Monthly Meeting for April

Saturday, April 15, 2023
Presenter Tom Polakis

Title: “Astroimages: More Than Just Pretty Pictures”

Astronomical imaging has made great strides in the past decade alone. Often, the emphasis is placed on the sharpness of stars and the trueness of colors. But is that all there is to see? In his presentation, Tom will dig deeper into his images and videos to show such features as the influence of the earth's atmosphere, effects of geometry and perspective, and distances and velocities, typically using no more than high school-level math. Pictures really are worth a thousand words.

Tom Polakis has been an active amateur astronomer for 45 years, during which has seen Saturn circle the sun 1½ times. His main interests involve visual observing of all astronomical phenomena, and imaging of same with equipment ranging from a phone to a backyard observatory. He has a particular interest in describing the universe as an ever-changing entity. His writing and photography have regularly appeared in magazines such as "Astronomy" & "Sky & Telescope," and more recently has been an author or co-author in refereed astronomical publications.

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.

What's New

Lowell Observatory has opened and we are now doing in-person meetings there.

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