Riverside Astronomical Society—Outreach, star parties, dark sky site, and you!
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The Riverside Astronomical Society is justifiably proud of its newsletter. Every month member contributions inform, educate, and amaze. Our newsletter is typically more than 30 pages of mostly member-contributed content such as articles, reviews, photos, and classified ads. It also contains NASA/JPL contributions, star charts, and other information related to astronomy and celestial events.

Click a link below to download a sample of the Prime Focus.

Standard Quality (~5MB)
Good for mobile devices and slower Internet connections. Photo quality and overall resolution is very good.


High QualityJoin the club to get the newsletter in high resolution!
Best for desktop computers and fast Internet connections. Photo quality and overall resolution is best.


The monthly Prime Focus is available to members as a PDF download in 2 resolutions. Both contain the same articles and photos, but the quality or clarity of the photos is better in the high resolution version.

If you would like to start receiving Prime Focus monthly, join the RAS!

To contribute an article or photo to Prime Focus, get more information here.

Having trouble downloading or viewing Prime Focus? You may need to update to the latest Adobe Reader. Get it here.