No Picture
Members Blog

Observing bright variable star Algol

Algol, designated Beta Persei (β Persei, abbreviated Beta Per, β Per), known colloquially as the Demon Star, is a bright multiple star in the constellation of Perseus and one of the first non-nova variable stars to be discovered. Algol is a three-star system, consisting of Beta Persei Aa1, Aa2, and Ab – in which the hot luminous primary β Persei […]
FrontPage

RAC at RochesterFest 2026

Solar Observing at RochesterFest The Rochester Astronomy Club marked another successful community outreach event on Saturday, June 27, celebrating its second annual appearance at RochesterFest. To combat the summer heat, club members Randy and Lynn thoughtfully provided a sturdy yellow canopy shelter, offering a much-needed reprieve from the blazing sun. Once settled in the shade, visitors were treated to an […]
No Picture
Members Blog

Observing Alpha Centauri from Fort Myers Beach

On my recent trip to Fort Myers Beach, Florida, I set my astronomical observation goal to observe the nearest bright star, Alpha Centauri. Alpha Centauri is known to be 4.3 light years away. The really closest star is Proxima Centauri at 4.2 light years away, with a brightness of 10.43 – 11.11 magnitude. It is 2.18° southwest of Alpha Centauri […]