Wednesday 12 October 2016

AR12598 in CaK - 9th October

Even with the Tal100R stopped down to 80mm the seeing was too much at 2000mm focal length, giving quite a soft feel to the image.  Need to try a wedge prism with the PGR Chameleon 3 to see if it helps with the Newtons ring.  Still, a lot of nice bright white plage around this active region.