initial processing artefacts

[Burly]

I seem to be making progress, seems my flats weren’t quite right that seems to be resolved , as my camera is still attached to scope and imaging train hasn’t altered I will redo m31 as I now have another 2 hrs of data so approx 8hrs
I had a quick process of the last sessions data but seem to my eyes to have a lot of aqua coloured stars , I will have a ply and post result and log and see if ivo can shed some light to where I’m going wrong .

[Burly]

M31 8.5 hrs now I know the star colours are wrong looking like too many aqua coloured stars but what is the likely cause of this poor flats , DSS stacking , someone on sgl said I may be clipping the black what ever that means ? I will post the fits file and log this evening other than that I’m quite pleased and seem to be heading in the right direction just seems to be colour I struggle with , used colour module so mask auto -stars do -sample - mask clear invert .

[admin]

M31 8.5 hrs now I know the star colours are wrong looking like too many aqua coloured stars but what is the likely cause of this poor flats , DSS stacking , someone on sgl said I may be clipping the black what ever that means ? I will post the fits file and log this evening other than that I’m quite pleased and seem to be heading in the right direction just seems to be colour I struggle with , used colour module so mask auto -stars do -sample - mask clear invert .

Ha! I just commented on SGL before I saw this.
I actually think you've done a pretty good job on this (and I give reasons why in the SGL post).
For 8.5h I would've liked to see a bit better signal, but then again, you are starting to show even the purplish HII areas with - what I think - is a visual spectrum setup. What instrument are you using for acquisition?
The star temperatures actually look good to me, which is pretty much a given as you've color balanced out the image using the foreground stars; their average must be white.

[Burly]

Thanks ivo help much appreciated ,tecnosky 70Q 346 mm fl quadruplet ,idas d2 filter,Canon 1000D astro modified ,guided in phd2 bortle 6 sky ,at least i seem to be on the right path , stacked in DSS, https://www.dropbox.com/s/otx4cnidu8blz ... A.FTS?dl=0
StarTools 1.5.364
Tue Sep 10 22:13:54 2019
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File loaded [C:\APT_Images\Camera_1\m31 8.5HRS3DATA.FTS].
Image size is 3906 x 2602
---
Type of Data: Linear and was Bayered, but not whitebalanced
--- Crop
Parameter [X1] set to [119 pixels]
Parameter [Y1] set to [138 pixels]
Parameter [X2] set to [3777 pixels (-129)]
Parameter [Y2] set to [2486 pixels (-116)]
Image size is 3658 x 2348
--- Bin
Parameter [Scale] set to [(scale/noise reduction 50.00%)/(400.00%)/(+2.00 bits)]
Image size is 1829 x 1174
--- Auto Develop
Parameter [Ignore Fine Detail <] set to [2.0 pixels]
Parameter [Outside RoI Influence] set to [50 %]
Parameter [RoI X1] set to [431 pixels]
Parameter [RoI Y1] set to [404 pixels]
Parameter [RoI X2] set to [901 pixels (-928)]
Parameter [RoI Y2] set to [994 pixels (-180)]
--- Wipe
Parameter [Mode] set to [Correct Color & Brightness]
Parameter [Precision] set to [256 x 256 pixels]
Parameter [Dark Anomaly Filter] set to [1 pixels]
Parameter [Drop Off Point] set to [100 %]
Parameter [Corner Aggressiveness] set to [100 %]
Parameter [Aggressiveness] set to [75 %]
--- Crop
Parameter [X1] set to [100 pixels]
Parameter [Y1] set to [58 pixels]
Parameter [X2] set to [1736 pixels (-93)]
Parameter [Y2] set to [1082 pixels (-92)]
Image size is 1636 x 1024
--- Auto Develop
Parameter [Ignore Fine Detail <] set to [2.0 pixels]
Parameter [Outside RoI Influence] set to [50 %]
Parameter [RoI X1] set to [0 pixels]
Parameter [RoI Y1] set to [0 pixels]
Parameter [RoI X2] set to [1636 pixels (-0)]
Parameter [RoI Y2] set to [1024 pixels (-0)]
--- Wipe
Parameter [Mode] set to [Correct Color & Brightness]
Parameter [Precision] set to [256 x 256 pixels]
Parameter [Dark Anomaly Filter] set to [4 pixels]
Parameter [Drop Off Point] set to [100 %]
Parameter [Corner Aggressiveness] set to [100 %]
Parameter [Aggressiveness] set to [75 %]
--- Auto Develop
Parameter [Ignore Fine Detail <] set to [5.0 pixels]
Parameter [Outside RoI Influence] set to [50 %]
Parameter [RoI X1] set to [336 pixels]
Parameter [RoI Y1] set to [321 pixels]
Parameter [RoI X2] set to [818 pixels (-818)]
Parameter [RoI Y2] set to [899 pixels (-125)]
--- Color
Parameter [Cap Green] set to [Sliders Reduce Color Bias]
Parameter [Bias Slider Mode] set to [Scientific (Color Constancy)]
Parameter [Style] set to [Straight CIELab Luminance Retention]
Parameter [LRGB Method Emulation] set to [UNKNOWN]
Parameter [Dark Saturation] set to [2.00]
Parameter [Bright Saturation] set to [Full]
Parameter [Saturation Amount] set to [200 %]
Parameter [Blue Bias Reduce] set to [1.00]
Parameter [Green Bias Reduce] set to [1.01]
Parameter [Red Bias Reduce] set to [1.78]
Parameter [Mask Fuzz] set to [1.0 pixels]
Parameter [UNKNOWN] set to [0 %]
--- Contrast
Parameter [Expose Dark Areas] set to [No]
Parameter [Compensate Gamma] set to [No]
Parameter [Precision] set to [256 x 256 pixels]
Parameter [Dark Anomaly Filter] set to [4 pixels]
Parameter [Aggressiveness] set to [75 %]
Parameter [Dark Anomaly Headroom] set to [15 %]
--- Wavelet Sharpen
Parameter [Structure Size] set to [Large]
--- Wavelet Sharpen
Parameter [Intelligent Enhance] set to [Yes]
Parameter [Scale 1] set to [100 %]
Parameter [Scale 2] set to [100 %]
Parameter [Scale 3] set to [100 %]
Parameter [Scale 4] set to [100 %]
Parameter [Scale 5] set to [100 %]
Parameter [Mask Fuzz] set to [8.0 pixels]
Parameter [Amount] set to [100 %]
Parameter [Small Detail Bias] set to [75 %]
Mask used (BASE64 PNG encoded)


--- Deconvolution
Parameter [Image Type] set to [Deep Space]
Parameter [Mask Behavior] set to [De-ring Mask Gaps, Hide Result]
Parameter [Radius] set to [1.5 pixels]
Parameter [Iterations] set to [6]
Parameter [Regularization] set to [1.00 (optimal noise and detail)]
Parameter [Mask Fuzz] set to [4.0 pixels]
Mask used (BASE64 PNG encoded)



--- HDR
Parameter [Small Detail Precision] set to [Max]
Parameter [Channels] set to [Brightness Only]
Parameter [Algorithm] set to [Optimize Soft]
Parameter [Dark/Bright Response] set to [Full]
Parameter [Detail Size Range] set to [1000 pixels]
Parameter [Strength] set to [1.2]
--- Life
Parameter [Detail Preservation] set to [Linear Brightness Mask]
Parameter [Compositing Algorithm] set to [Multiply, Gamma Correct]
Parameter [Inherit Brightness, Color] set to [Off]
Parameter [Output Glow Only] set to [No]
Parameter [Airy Disk Sampling] set to [128 x 128 pixels]
Parameter [Airy Disk Radius] set to [8 pixels]
Parameter [Glow Threshold] set to [4 %]
Parameter [Detail Preservation Radius] set to [20.0 pixels]
Parameter [Saturation] set to [50 %]
Parameter [Strength] set to [50 %]
Parameter [Mask Fuzz] set to [1.0 pixels]
--- Wavelet De-Noise
Parameter [Filter Type] set to [Distance Weighted Outlier Rejection]
Parameter [Grain Size] set to [5.0 pixels]
--- Wavelet De-Noise
Parameter [Scale 1] set to [95 %]
Parameter [Scale 2] set to [95 %]
Parameter [Scale 3] set to [95 %]
Parameter [Scale 4] set to [95 %]
Parameter [Scale 5] set to [0 %]
Parameter [Mask Fuzz] set to [1.0 pixels]
Parameter [Scale Correlation] set to [6]
Parameter [Color Detail Loss] set to [12 %]
Parameter [Brightness Detail Loss] set to [12 %]
Parameter [Grain Dispersion] set to [2.4 pixels]
Parameter [Non-linear Response <] set to [Off]
Parameter [Smoothness] set to [65 %]
File saved [C:\APT_Images\Camera_1\m31 8.5HRS3DATA.JPG].
File saved [C:\APT_Images\Camera_1\m31 8.5HRS3DATA.TIF].