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The Royal Astronomical Society of Canada

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Amateur Astronomy Resources
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Amateur Astronomy Resources


Earth Tools

Rating: 5.0 of 5

Powered by Google Maps, this site allows you to get useful data for astronomy software, go-to scopes, or just planing your night.

Use the map to navigate to your observatory or favorite observing spot. Then on the left, choose from several useful tools to get detailed information about the site, including Latitude & Longitude in degrees/minutes/seconds, decimal degrees, the elevation in feet and meters, sunset, sunrise as well as astronomical twilight and night times.

Marc's Observatory

Rating: 4.7 of 5

Marc's Observatory is an award-winning astronomy website for kids, designed by Belleville RASC member Marc Keelan-Bishop.

NinePlanets.org's Messier List

Rating: 4.7 of 5

This website provides photographs and the stellar co-ordinates of each of the Messier objects. There is access to other websites.

Eclipse Home Page

Rating: 4.5 of 5

Provides details of recent solar and lunar eclipses as well as future solar/lunar eclipses. An access to catalogues of eclipses over several millenia is also available. Other related websites are available through weblinks.

Your Age On Other Worlds

Rating: 4.5 of 5

This web-site calculates what your equivalent age would be relative to your age on Earth when you visit other planets in the Solar System. Can be amusing.

The Mag-7 Star Atlas Project

Rating: 4.3 of 5

Twenty-one (21) fairly detailed star charts that can be printed out for observational usage. Can be moderately intimidating for those who may not be too familiar with the basic stellar layout. These charts are not detailed enough to be too confusing for most people.

Atmospheric Optics

Rating: 4.0 of 5

Sun Pillars, Moon Dogs, Halos, rainbows - all explained in amazing detail, but simple to understand.

Caldwell Charts

Rating: 4.0 of 5

This web-site provides PDF finder charts for the Caldwell charts. Just as challenging as the Messier Objects.

Numbered Minor Planets

Rating: 4.0 of 5

This site accesses basic details regarding asteroids within the asteroid belt. It is a list that is periodically updated at least once a month. The web-site includes information such as asteroid number, asteroid name, discovery date, discovery site, and discoverer(s).

Telescope Optical Paths

Rating: 4.0 of 5

This web-site shows a profile of the various basic optical designs of optical telescopes used in astronomy.

The NGC/IC Project

Rating: 4.0 of 5

A website dedicated to update/modernise the data of the original NGC and IC catalogues originally compiled by J. L. E. Dreyer. Included are the modern co-ordinates of each object as well as photographs. Currently, it is a website in progress. It makes references to other websites.

Sky Charts 01

Rating: 3.5 of 5

Free sky charts that can be printed out for personal use. Quite nice.

Avila.Star-Shine Messier Charts

Rating: 3.0 of 5

This website provides charts of each location of the Messier object as well as Tetrad finder charts.

Jovian Satellite Freeware

Rating: 2.7 of 5

This freeware programme provides a visual representation of the positions of the Jovian satallites over a period of years, decades and centuries. The user can put in the date and time to detemine the satellite positions. The user has three choices to observe the satellite positions: Astro Scope, Binoculars and Star Diagonal. Very nice programme.

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