Wednesday, 10 May 2017

'Ex' AR12655 With The Airylab HaT - 10th May

The sun was officially 'spot free' today with very little in the way of activity, a nod to the upcoming solar minimum.  While there were no spots visible there was a region of plage and magnetic field lines associated with 'ex' active region Ar12655 as can be seen in the image above.  This was taken with the 0.2m Airylab HaT with a double stacked Daystar Quark at about 5.6m focal length using a PGR Chamelon 3 with 2x2 binning to get nice large effective 6.9um pixels and a nice short 4ms exposure time to freeze the early morning seeing conditions.