A new and improved ephemeris for the hot subdwarf eclipsing binary SDSS J082053.53+000843.4
SDSS J082053.53+000843.4, for brevity here referred to as J08205, is a 15th magnitude short period, 0.0962404(1)d (~2h 18.6m), detached eclipsing
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The brighter comets of 2007
This report describes and analyses the observations of the brighter or more interesting comets discovered or at perihelion during 2007, concentrating on those with visual observations.
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Saturn in 1998-’99
Richard McKim reports observations and images from the 1998 opposition of Saturn.
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Albert Francis Arthur Lofley Jones, DSc., OBE, FRAS, FRASNZ (1920-2013)
John Toone looks back at the life of Albert Jones, the most prolific variable star observer in the history of observational astronomy.
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Obtaining solar eclipse and planetary transit contact times using DSLR imaging
A simple method is presented to determine the times of contact of solar eclipses and planetary transits across the solar disk.
Read moreSaturn in 1997-’98
A report of the Saturn Section.
Read moreFaint-state transitions in the SW Sextantis nova-like variable HS 0455+8315
We present the fourteen-year lightcurve of the SW Sextantis nova-like variable HS 0455+8315.
Read moreFocusing 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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