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Record-breaking SU Tauri & faded Betelgeuse keep observers guessing
One of the great joys of observing variable stars is the unpredictability in the way they behave. You can of
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Imaging Mars from Curaçao in 2018
During the 2018 apparition we imaged Mars on the island of Curaçao (E. S.) and from the Netherlands (J. S.), using Celestron C8 and C14 Schmidt–Cassegrain telescopes, respectively. Since the altitude of Mars was the highest on Curaçao and this Caribbean island often has excellent seeing conditions, the most detailed information was collected there. Starting at the end of 2018 May, a big dust storm developed, which at the end of 2018 June covered almost the entire martian surface. In 2018 September the storm had vanished again.
Read moreThe quest for an airline-portable telescope for visual astronomy
This paper describes how a small refractor can readily be taken on observing trips abroad as airline cabin baggage.
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