Wednesday, 27 May 2015

AR12353 Ha Closeup 26th May

A closeup of one of the few active regions that are on the sun at the moment taken with the 100mm Tal, double stack Quark and the PGR Blackfly IMX249 camera.  There's virtually four times more image with the new camera compared to my old trusty DMk31, and as a result there is an unevenness in the field, I think I will need to start trying a flat field.  There's also a bit of vignetting too, so need to look at the spacing of the chip to the focal reducer to reduce this to a minimum.