Solar
Preparing for the 2032 Mercury Transit: A Six-Year Practice
The next transit of Mercury falls on 13 November 2032. Cosmo Tate on what amateurs are doing in the six years between then and now to be ready.
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amateur solar
Solar
Hydrogen-Alpha for the Amateur: One Filter, Many Suns
A Coronado PST, a Lunt LS50, a double-stacked rig in a Munich back garden: Anselm Bauer on what hydrogen-alpha really shows, and what it costs to see it.
Solar
White Light on a 60mm: What a Small Refractor Will Show You
A modest 60mm refractor, properly filtered, will draw a sunspot group with surprising honesty. Iolanda Ferro on a year of daytime observing from a balcony in Naples.