Nice image Daniel, Yes you can tell it's a VC200 but you do get use to the diamond shaped stars. Small tweaks on the collimation sometimes helps to round the stars a bit but believe me it is a tiny adjustment.
The images overall are very good but I wouldn't muck around too much with multiple exposure or ISO exposures for an image of Trifid, definitely for something like Orion Nebula where yu have a reason to do it.
You could darken the background a little using levels but otherwise an image to be very happy with. Full calibration is the real key to getting the best from your images and it is a lot easier with one set of exposures. Longer subs will increased the signal to noise ratio and make processing the fine detail a whole lot easier so don't discount longer subs but there is a point where the thermal characteristics of an uncooled camera equate to a diminished return on time spent. EXPERIMENT and have fun.
Great image. Keep them coming.
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