Focusing by diffraction
A simple, low cost, yet highly effective method for achieving accurate focus of a telescope is described.
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The need for professional-amateur collaboration in studies of Jupiter and Saturn
The observation of the gaseous giant planets is of high scientific interest. Although they have been the targets of several spacecraft missions, there still remains a need for continuous ground-based observations.
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The BAA total solar eclipse expeditions of 1936
Two successful Mediterranean eclipse expeditions promoted and organised by Lesley Comrie and Reggie Waterfield are described.
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The International Astronomical Youth Camp comes to Somerset
The International Astronomical Youth Camp (IAYC) first began back in 1969. The camp was the first of its kind, with
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Absolute Beginners No. 4: Mounting your telescope
In the last ‘Absolute Beginners’ we considered the various types of telescope which are available to the amateur. However, it
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The transit of Mercury, 2016 May 9
On Monday May 9 there will be a transit of Mercury across the Sun’s disk. This relatively rare phenomenon is
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