Another test with longer (2 minute) exposures. Just 10 sub frames, so nothing too shocking. Guiding is not satisfactory - there is some drift in RA on some frames. Need to twiddle with the worm gear meshing, I have a feeling it is too tight at the moment, small changes down there can make a big difference to the smoothness of tracking.
Captured in artemis capture, calibrated in ImageViewCa and stacked in Maxim. Tweaked in photoshop
This image was autoguided using my 400mm focal length refractor and my black and white SC1 webcam.
Current Imaging equipment configuration
Exposure Details :
Coma Corrector 10x120s on 200mm @ F5 with ART285
Curdridge Observatory, Southampton,UK
