Ursa (Finland)

Tähtitieteellinen yhdistys Ursa ry

Founded| November 2, 1921 (1921-11-02)
Focus| Amateur astronomy
Location|

* Helsinki, Finland

Area served

| Finland

Membership (2016)

| 18,218
Website| www.ursa.fi

Ursa Astronomical Association (Finnish: Tähtitieteellinen yhdistys Ursa ry) is the largest astronomical association in Finland . Ursa was founded on 2 November 1921. Founding members include a renowned Finnish astronomer Yrjö Väisälä. In 1926 Ursa established the Ursa Observatory in Kaivopuisto district of Helsinki. In 2007 the Tähtikallio Observatory & Education Center was established in Artjärvi, its current equipment includes an Astrofox 36" Folded Newtonian Open tube telescope, an Alluna 16" Ritchey-Chrétien telescope, a Meade 16" LX200GPS Schmidt-Cassegrain telescope, a Sky-Watcher ED 120mm refractor telescope fitted with a Baader AstroSolar Solar Filter and a piggybacked Coronado SolarMax 40 H-Alpha telescope. Ursa's primary functions include advancing amateur astronomy and astronomical education. They have also published a magazine Tähdet ja avaruus since 1971.[1] Anyone can join Ursa for an annual fee.[2]

## Contents

* 1 Sections
* 2 See also
* 3 References
* 4 External links

## Sections

The organization has thirteen sections specialized in different aspects of amateur astronomy (and meteorology):

* Solar section
* Halo section
* Instrument section
* Atmospheric optical phenomena section
* Clubs and organization
* Lunar, planetary and cometary section
* Mathematics and information technology section
* Meteor section
* Storm chasing section
* Minor planet and occultation section
* Aurora section
* Deep sky section
* Satellite section

In addition, Ursa has two loosely organized hobby groups:

* Variable stars
* Observation conditions

## See also

* List of astronomical societies

## References

1. ↑ "A brief history of Ursa". Ursa. 2004-09-02. http://www.ursa.fi/eng/presentation.html.
2. ↑ "Tähtitieteellinen yhdistys Ursa: Etusivu" (in fi). https://www.ursa.fi/etusivu.html.

## External links

* English section of Ursa website

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