Monday 28 July 2014

AR12121 Whitelight Closeup 27th July

I decided to try a few whitelight closeups on sunday afternoon, however the seeing was not as good as I would like and this image and the one in the previous post were the only ones that came out.  This shot was taken at roughly 3000mm focal length with the 100mm scope with the lunt solar wedge.  IMHO a 100mm scope is too small really for doing closeup working white light, 140-150mm is what is needed for showing the granulation as polygons rather than the 'jelly bean' shape that is shown with smaller apertures.