Tuesday, 8 July 2014

CaK Proms and Ghostbusting 6th July

I used a focal reducer on the nosepiece of the camera for this image to capture the whole of suns disk on the DMKs chip.  This is not something I do very often, but imaging at this scale is very good at showing any ghosting or reflections that are present in the filter train.  I've recently looked at how the various elements in my CaK setup work together, and this image would seem to show that i'm moving in the right direction in shifting the ghost images.  There is still some background scattering visible, which could have been clouds / water vapour when the image was took, but even though the proms were faint when this image was took they are visible never the less.