[bluesilver (Peter)]

Hi, Not sure if i have got this posted in the correct section here or not.
I have just had a good clear night last night to try and do some imaging of NGC 6744 and also NGC 6334
Camera is asi2600mc, scope is Sykwatcher Esprit 150
All images are 2 minute exposures at gain 100 and -10c
I stacked 50 lights, 50 Flats, 50 Bias frames
Light frames were done in APT at 22000ADU
Stacked in DeepSky stacker and processed in Startools

As you can see the noise is very very bad,
NGC 6334 has some very bad sort of white glow effect going on also.
I took the flats and bias right after i finished taking the lights, so nothing was disturbed.

Something is way off here, I am not sure if it is a noisy cable form the camera ( standard ZWO cable )
Not sure if i should of included Dark Flats and Darks also in the stacking process?

In DeepSky Stacker, under Stacking Parameters, under Light, you have 3 options:
No Background Calibration
Per Channel Claibration
RGB Channels Background Calibration
( I selected the last one, I think this is what it is at the default settings anyway )

The you have an options button with:
Linear
Rotational
( i selected Rotational, again i think this is the default setting )

Then you have RGB Background Calibration Method:
None
Minimum
Middle
Maximum
( I selected maximum, think this is the default setting )

When all stacked and finished, i saved it as a TIF 16 bit file

Open in Startools as a Linear from OSC/DSLR
Using the wipe function and tried both basic and vignett options.

So something is at a miss here or i am stacking it all wrong.
Any advice or suggestions would be very much appreciated.