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Located in Portland, Oregon, the Rose City Astronomers (RCA) is the largest amateur astronomy club in the Pacific Northwest. As a non-profit volunteer organization, RCA is dedicated to promoting the enjoyment and education of astronomy to our members and the general public. A general membership meeting is held on the third Monday of each month at OMSI, usually featuring a noted guest speaking on an astronomy-related topic. Guests and potential members are welcome to attend any of our meetings.


RCA General Meeting
1945 SE Water Ave, Portland, OR
Monday, September 21st

New Member Orientation

6:30pm - 7:00pm
OMSI Planetarium

General Meeting


OMSI Auditorium

Prospective members and the general public are welcome to attend our general meetings

Parking is FREE for all of our meetings at OMSI

The OMSI Auditorium is equipped with T-coil Audio Loop




Haggart Observatory Public Nights

Saturday, September 5th

8:30 p.m. - 11:30 p.m.

Next OMSI Public Star Party

Next scheduled OMSI Star Party will be
August 12th - Perseid Meteor Shower Watch
at both Stub Stewart and Rooster Rock State Parks

Stub Stewart State Park
Rooster Rock State Park




Thanks to

For Their Support

Astronomers Without Borders

2015 The Rose City Astronomers  All Rights Reserved

Top image credits: Center, Jan Keiski & Dave Duncan; 2 side images, Dave Haworth; Complete image editing & processing, Diana Murray