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Absolute Beginners No 13. The Pole Star
The Pole Star
Read moreSky Notes: 2018 August & September
Brian suggests looking for the prominent globulars in Hercules, M13 and M92
Read moreThe globular clusters of Ophiuchus
Globular clusters are fascinating objects and summer and early autumn, when our southerly view is towards the galactic centre and
Read moreThe opposition of Mars, 2010: Part II
In Part II we discuss white clouds and the polar regions. The equatorial cloud band (ECB) was well observed from Ls= 001° onward. The behaviour of the orographic clouds over the great volcanoes was seasonally normal, in the absence of any large dust disturbance. We saw the Tharsis orographics from Ls= 011°, and the Olympus Mons orographic from Ls= 019°. As with the ECB, observations did not continue late enough to establish their seasonal decline. The 2009-’10 N. polar cap recession was followed in detail nearly as far as the summer remnant stage.
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