Friday, 20 June 2014

CaK Full Disk 20th June

Activity on the sun would seem to be getting quieter at the moment, even in CaK which is normally bustling, but there is only a group of 3 active regions that can be seen, even the proms were small.  This shot was taken with the 40mm at 560mm focal length with the homebrew filter.  Initial tests with the UV polariser would seem to suggest it is indeed in cutting some reflections.  The sky background was certainly blacker, and contrast does not seem to be adversely affected.  Seeing was terrible this afternoon in heat of about 24c but the spicule ring was easily seen.  First impressions are certainly positive!  The next step is either better blocking filters or a 1/4 wave plate, can't decide which!