Stargazing Tools – Moon, Color, Comet, and Solar Filters

In a previous section, we examined so-called “light pollution” filters, extremely useful optical tools for removing unwanted light from certain types of street lamps that have long been the scourge of astronomers. This month, we look at simpler filters for observing planets and the Moon. We take a quick look at filters that can aid in observing com...

Sorry, you need to log-in to see this protected course content!

Science of Stargazing – Galaxies

A galaxy is a massive, gravitationally bound system made up of stars, remnants of stars, agglomerations of gas and dust, along with an unknown type of “dark matter” that has mass but does not emit light or interact with “ordinary” matter. The word “galaxy” comes from the Greek work galaxias which means "milky", a reference to the whitish path o...

Sorry, you need to log-in to see this protected course content!

Deep Sky Tours – November

This month it's galaxies, mostly, with a fine selection of double stars and a few worthy star clusters. Southern observers will also explore one of the nearest galaxies to our own, the Small Magellanic Cloud, an object without equal in the northern skies.

Click here to download notes for 'Deep Sky Tours - November' (PDF, 1 MB)

Click here to ...

Sorry, you need to log-in to see this protected course content!