At Our Next Meeting

Meeting Nights

We meet on the first Monday of the month and we can use the inside facilities from 1830 until 2100 when the centre doors are locked.  We can stay outside as long as we want and that is usually limited by the weather.  

The format of our meetings is changing from talks by the members and then going outside to do our own thing to a slightly more structured approach to cover the needs of the more experienced members and those of the less experienced.  We will still have the talk by one of the members on an astronomy related topic and Damian will still give a talk on his Constellation of the month.  At this point we hope to move outside and locate the "Constellation of the month" in the night sky with tips on star hopping and pointers on how to find the Constellation and any partiular points of interest.

We are also introducing "tip of the month" which could be anything the members bring up.  

The star cluster M3 is between Arcturus Bootes (α Bootis) and double stars, the brightest of hunting dogs (Cor Caroli). The apparent magnitude of the cluster M3 is 6.3, just above the limit of visibility with the naked eye. In binoculars you will see a whitish spot and diffuse. If most of the cluster stars are older than 10 billion years, a large number of stars are blue, so young, a few hundred million years.
The object was discovered by Charles Messier in 1764 but William Herschel who around 1784 realized it was a cluster of stars. M3 contains a considerable number of stars, about half a million, most stars are old and red.
Light takes about 35,000 years to reach us from M3, which spans about 150 light-years.
This image is a composite of 30 x 120 seconds and 30 x 30 seconds processed in Photoshop CS5.
Takahashi Astrograph and QHY10 CCD......Lights, Darks, Flats, and Bias frames calibrated in Nebulosity V2.5


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