Sudden changes on Comet C/2019 Y4 (ATLAS)
As I said in my recent BAA webinar comets are unreliable things. Recent astrometry shows significant residuals in RA indicating
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Archives
BAA Wednesday webinars
BAA Wednesday webinars
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Equipment for observing the Sun (Part II: narrowband)
WARNING: Never look at the Sun with the naked eye or any optical instrument unless you are familiar with safe
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Auroral Activity 2020 January 1 – February 29, a sighting of STEVE & ‘dunes’ in the sky
Although the Sun is now at minimum, there have been some coronal holes so several aurora sightings have been made.
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