Aberration Insepctor. Coma Tilt Collimation

[AF]

Hi Ladies and Gents

Im hoping someone can help me here. If you have a look at the photo attached can you help my diagnoes what exactly im facing here. This is littearlly the first light through a brand new 9.25 SC Edge HD so I REALLY hope its not collimation or Coma. Does anyone recognise this as tilt? This a OSC image not debayered.

Secondly, is there anyway to combat this in PixInsight? Maybe some tricks with Morphological Transformation? 


Thanks!

[sharkmelley]

Yes it could be tilt.  Yes it could be a collimation problem.  Yes it could be a mixture of the two.

What does a defocused star look like - is everything concentric?  If not, then you need to fix the collimation before investigating the possibility of tilt.

Mark

[Geoff]

The fact that the star elongation is radial suggests an optical aberration--possibly field curvature. There also seems to be some tilt because the elongation is greater on the left of the picture than it is on the right.

[AF]

Thanks gents. Looks like I've got debugging to do. Was hoping a new scope would have sorted this!