Yet another test on M57. Better stars with time, but still problems in DEC guiding - had to discard too many frames for my liking. Tried tightening the belt drive mod and having another go tonight.... if that fails, it is back to gears on the DEC drive.
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 28x60s on 200mm @ F5 with ART285
Curdridge Observatory, Southampton,UK