Saturday, 8 July 2017

6 Minutes in the Life of AR12665 - 8th July

The seeing was just about holding up for the 100mm of aperture of the Tal100R refractor this morning so I decided to go for an animation to see what this active region was up to.  This is just over 6 minute real time - before the clouds came back! with a cadence of 4 images a minute revealing just how quickly things change on our star.  Using a double stacked Daystar Quark and a 0.7x Baader solar telecompressor brought the focal length to a manageable 3 metres.  Using a PGR Chameleon 3 camera with 2x2 binning meant short exposure (3ms) times were possible to tame the seeing.