The RTMC Astronomy Expo was one of the major gatherings of
amateur astronomers
Amateur astronomy is a hobby where participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes. Even though scientific research may not be their primary goal, some amateur astronomers ...
in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
.
History
Founded by Clifford W. Holmes and the Riverside Astronomical Society, the RTMC Astronomy Expo began in 1969 as the Riverside Telescope Makers Conference at
Riverside City College
Riverside City College (RCC) is a public community college in Riverside, California. The college is part of the Riverside Community College District, as well as the larger California Community Colleges System.
History
RCC first opened in 1916 at ...
in
Riverside,
California
California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the ...
. It consisted of a series of lectures about
astronomy
Astronomy () is a natural science that studies astronomical object, celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and chronology of the Universe, evolution. Objects of interest ...
and
telescope
A telescope is a device used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. Originally meaning only an optical instrument using lenses, curved mirrors, or a combination of both to obse ...
making with a competition for quality and innovative telescopes. In 1973 it was moved to a dark-sky site near
Idyllwild and in 1975 it was moved to its last home near
Big Bear City
Big Bear City is an unincorporated community in San Bernardino County, California, United States along the east shore of Big Bear Lake and surrounded by the San Bernardino National Forest. It is northeast of the city of San Bernardino, and immed ...
. It was held on the three-day
Memorial Day
Memorial Day (originally known as Decoration Day) is a federal holiday in the United States for mourning the U.S. military personnel who have fought and died while serving in the United States armed forces. It is observed on the last Monda ...
weekend. In 2010, it was held in May on the weekend that corresponded with new moon to allow amateur astronomers the best viewing conditions. Due to low attendance the date was moved back to the Memorial Day weekend in 2011
The organization annually presented the
Clifford W. Holmes Award for "Major Contribution to Popularizing Astronomy, the Warren Estes Memorial Award for "Best Use of Simple Materials and Technique" in making telescopes, and the
Clyde Tombaugh
Clyde William Tombaugh (February 4, 1906 January 17, 1997) was an American astronomer. He discovered Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt. At the time of discovery, Pluto was cons ...
Award "Creative Innovation in Telescope Design".
To better reflect the evolution of amateur astronomy, the Riverside Telescope Makers Conference was renamed the RTMC Astronomy Expo in 2003. Each year the scope of activities continued to grow and evolve and had lectures, workshops, extensive beginners activities, a swap meet, astronomy clubs and other organizations, and vendors demonstrating and selling astronomical products. The Expo promoted family activities with swimming, canoeing, horseback riding, archery, wall climbing. Extensive hiking and mountain biking trails were also available.
On 12 October 2019, the Board of the RTMC announced that 2019 was the last year that the Astronomy Expo will be held.
Nightfall
The RTMC also produced an early autumn star party called Nightfall in
Borrego Springs, CA
Borrego Springs (''Borrego'', Spanish language, Spanish for "Sheep") is a census-designated place (CDP) in San Diego County, California, San Diego County, California. The population was 3,429 at the 2010 United States Census, 2010 census, up from ...
. Nightfall is still held by the Riverside Astronomical Society on the weekend in October that corresponds with the new moon.
Pacific Astronomy and Telescope Show (PATS)
In 2007, the Riverside Telescope Makers Conference, Inc. announced a fall event to be held in Pasadena named the Pacific Astronomy and Telescope Show (PATS). This annual event was held annually 2008 thru 2012 at the Pasadena Convention Center and focused displays by commercial vendors, astronomy clubs and other organizations as well as talks and workshops. The first PATS was held September 13–14, 2008. The 2013 event was cancelled. PATS was designed to complement the ongoing RTMC Astronomy Expo.
References
{{reflist
External links
RTMC Homepage
Star parties
Events in California