Tuesday 21 April 2015

AR12324 & AR12325 CaK Closeup 18th April

This is my favourite image from saturdays session when the seeing was really holding up I was able to use the full resolution the Tal100R stopped down to 80mm offered, interestingly I used the scope at the full 100mm aperture and the results weren't as good.  You can see the penumbral fibrils in this image taken with a Beloptik tri-band ERF, homebrew CaK filter and imaging source DMK31 camera at 1750mm aperture.