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“Of the Vault of Heaven” –

CAELi is a member-supported astrological library, archive and research institute located in the heart of the Pacific Northwest, in the historic town of Tumwater.

CAELi is an institution for diverse and in-depth study of astrology for both scholars and laypeople. Founded by the need to have a space to read, study and to dive deeper into contemporary and historic celestial study, CAELi is an incubator for new ideas and cutting-edge research in the field.

Hand reaching for book on library shelf.

Membership drive 2024

Can we color in the whole map? If you are seeing this from an empty state, you could be the first to represent your area! Learn more about our new Trial Membership and how you can support the collective mission to restore astrology’s reputation! And get a snazzy Saturn stress-relief ball while yr at it.

Introducing our podcast: Within Orb

Within Orb is our premiere podcast dedicated to exploring the books and texts that have changed our lives, as we grow our astrological practice. Tune in every week to hear our host and founder, Jenn Zahrt, interview a new voice in the field about the books (not always astrological!) that changed how they work with celestial arts.

We’ve interviewed luminaries such as Thea Anderson, Clarissa Dolphin, Camm Cassidy, Adam Sommer, Mj Patterson, and many more on the way. If you know someone you’d like to see on the show, get in touch!

You can subscribe via your favorite podcatcher, or head over to our YouTube channel to watch a few of the full conversations via video. 

We hope you enjoy these deep dives into the texts that shape how we think and work with the starry firmament here on Earth.

Check Out the Latest Episode of our Podcast Within Orb

Within Orb Episode 51 with Travis Black

Astrologer, magician, and bodyworker Travis Black joins host Jenn Zahrt from Seattle, Washington to chat books and more! Together, the duo tackle a lot of ground, including: decoding planetary magic; Vedic astrology; the Plutonian elements of a famous TV reboot; Jupiter-Saturn conjunctions; planetary cancellation conditions; finding the least worst astrology; ritual and timing recipes; Jupiter in Gemini and Lemminkäinen; myth knowledge and cultural exploration; barycenters; astrology as an access point to philosophy, science, psychology, divinities, literature, and more; citing your sources; observational astronomy; telescopes and theodolites; images of synodic cycles; Dark Moon Lilith; and getting comfortable with not knowing. Plus: Twin Peaks, the “Gideon” ephemeris, and… it’s the water!

Read More »


Events & Activities at CAELi


Delve into the +10,000 volumes of astrological books and journals in our collection. Request digital scans and obtain research advice from our librarians.


Take virtual or in-person courses on astrological subjects and related esoteric fields to expand your horizons, deepen your understanding, and enhance your practice.


Share ideas with peers, find others interested in niche astrologies, gather together in our meeting rooms and come to online and in-person events at the library.


Learn from leading scholars and practitioners in our signature book talks and webinars. We hope to have more in-person lectures and classes soon.

Upcoming Events

Events | Courses | Chats

Short Course: Nicholas Culpeper’s Astrological Medicine

Book Chat: An Introduction to the Tetrabiblos with Andrea L. Gehrz

Book Chat: Vettius Valens Anthology, Book One with Andrea L. Gehrz

Book Chat: Ensoulment with Andrea L. Gehrz

Founding members

Become a founding member of CAELi and help ensure
the legacy of celestial arts for the future.

CAELi is a member-supported library and cultural center offering cultural and astrological conversations, book and art discussions, a circulating collection of donated books, and accessible online work spaces with engaging members of the community.

“It is impossible to talk about astrology as a monolithic entity, unchanged since ancient times and the same from culture to culture … under the general rubric of astrology there are competing methodologies, a diversity of techniques, and a variety of underlying philosophies.”
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