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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.

View Our Beta Website


RCA General Meeting
1945 SE Water Ave, Portland, OR
Monday, January 18th

Dr. Robert Pappalardo
JPL Europa Mission Project Scientist

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




Order Our 2016 Calendar.

2016 Calendar


Haggart Observatory Public Nights

Next public night:
Saturday, January 30th
6:00 p.m. to 9:00 p.m.


Next OMSI Public Star Party

Stub Stewart State Park

January 9th cancelled due to weather.

Next Star Party scheduled for Feb. 6th.


Rooster Rock State Park


Assemble Your Own RCA Star Wheel




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