Thank for your comments and feedback Rick & Rolf, much appreciated.
These efforts were part of a problem investigation from discovering some triangular stars from a previous session and I think I have identified some candidates for contributing to this:
- I used 1 sec auto guider exposures at a focal length of 2160mm and I think the rig was chasing the seeing.
- I fitted tube rings forward of the mounting puck and I think these introduced flexure.
- I removed the brass pressure ring from my focuser and this skewed the camera in the draw tube.
Just working my way through these issues and I chose these shots as auto guiding towards the SCP is so forgiving.
NGC6300 also needs a "Rolf special" – a multi evening shoot with his gorgeous dark skies. I won’t be attempting this faint fella again from Brisbane!
Cheers
Dennis