Imaging the sodium cloud of Io
Jupiter’s moon Io is the source of materials including sulphur and sodium that can be expelled from its vicinity into
Read moreJupiter’s moon Io is the source of materials including sulphur and sodium that can be expelled from its vicinity into
Read moreDuring the previous apparition, there was a weak Revival of the South Equatorial Belt. This was followed during 1955–’56 by
Read moreFollowing a brief introduction to pulsars and how to intercept radio-frequency transmissions from them, this article describes the design and
Read moreA survey of British newspapers has uncovered 41 sightings of sunspots made by untrained people with no optical aid and
Read moreAt last, we have darker nights and a planet to enjoy in the evenings! August through October can be the
Read moreIn 1894, three Sydney members of the British Astronomical Association – John Tebbutt, Walter Gale and Robert Innes, all well-known
Read moreDirect, simultaneous imaging of the full Moon rising as the Sun was setting proves that both objects can be seen
Read moreThe size of the sunspot group that produced the white-light solar flare observed by Carrington and Hodgson in 1859 is
Read moreNoctilucent cloud forms in the mesosphere at an altitude of about 83 km and appears annually in northern latitudes between
Read moreDue to their discrete brightness and uncrowded appearance, open clusters are accessible to many amateur instruments. Moreover, their photometric study
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