NGC2175 from Beckenham 15-16 Jan 2012

[mickw]

Cool 

[Carole]

Does this include data from DSC or is it the original reprocessed?

There is certainly a lot more colour in the stars, but the colours are showing up some sort of distortion in the stars, i.e. a lop sidedness.  Towards the left on the left and towards the right on the right.  I am sure there is a scientific explanation for this.  

You are a real trouper persevereing with Iris, I gave that up a long time ago. 

Carole  

[The Thing]

No extra data, At DSC I ended up putting my scope back in the car just before the sky cleared!

I don't know what the distortion is and Mark (at DSC) didn't know either. I suspect it's diffraction in the reducer/flattener coupled with comma or something that is causing the colour to be on on side of the star. This is the first image I've noticed it on, but then it's the first where my stars have had colours!

Iris is well worth the effort. Once you have a processing routine you just follow it every time... It's getting to the routine that's a pain.