Odd Result with LNC again

What is your camera?

It's a QSI 683

Posted by: Steve

I occasionally get odd results with LNC.  This is an Ha stack (13 x 1200s) - it is one panel from a wide view of M42/NGC1999.  I processed this in the sual way with BPM and Master Bias, Dark and Flat. 

This is the stack with no LNC:

 

And here are exactly the same settings, but with LNC Degree set at '1' and Iterations set at '3'.

Any ideas?

Hi Steve,

Thank you very much for sharing.

That looks very odd, especially since only 1st degree LNC was used?

Can you send me the data so I can test what's happening?

I will work on improving LNC soon, so it will be very helpfull if you could send me the data so we can further improve the module 😉 

Kind regards,

Mabula

Happy to Mabula.  What do you want?  All 13 calibrated and registered frames?

Hi Steve, yes, that's perfect, then I can duplicate the behaviour and hopefully understand why it happens and remedy it 😉

You can send it to me using wetransfer.com  use support@astropixelprocessor.com as address

Mabula

OK.  I just sent the files (zipped).  Neer used wetransfer before, but it all seemed to go smoothly.  I'll be interested to see how you get on.

Steve

Hi @gnomus,

I did download the files, haven't tested yet, but will sure do. First I need to release APP 1.057 (with fix for your multi-channel processing problem), then in APP 1.058 I probably upgrade the LNC tool 😉

Thanks for sharing 😉

Mabula