Jockinireland wrote: ↑Sat Mar 21, 2020 8:59 pmI tried putting it into startools - (I bought that a while ago but have never really got on with it). But since I really dont know how to use starTools the result was ...... not fantastic!
If you'd like to give this one a go in StarTools I'll give you the linear stack in either TIFF or FITS (its about 140meg for some reason) because I really feel like StarTools should have been able to do a better job than I was getting and I'd like to see that.
Hi,
Anything I can do to help, let me know. You are really missing out!
I was able to pull out the below with a reasonably standard workflow in ST 1.6;
(see here for full size)
I have to say, your camera's
Ha response is really quite good!
Short workflow as follows;
Type of Data: Linear and was Bayered, but not whitebalanced
(will process luminance and color separately)
--- Auto Develop
To see what we got.
This is nice, deep data. We can see some banding, a skyglow bias. Stars are not perfectly round.
I'm going to stay at native resolution and will not bin, as I think the dataset can take it.
--- Crop
Framing the pair.
Parameter [X1] set to [1647 pixels]
Parameter [Y1] set to [732 pixels]
Parameter [X2] set to [3736 pixels (-524)]
Parameter [Y2] set to [2124 pixels (-690)]
Image size is 2089 x 1392
--- Wipe
Parameter [Dark Anomaly Filter] set to [7 pixels] to better deal with the noisy background and banding.
--- Auto Develop
Region of Interest over M81
Parameter [Ignore Fine Detail <] set to [4.8 pixels]
Parameter [RoI X1] set to [219 pixels]
Parameter [RoI Y1] set to [476 pixels]
Parameter [RoI X2] set to [759 pixels (-1330)]
Parameter [RoI Y2] set to [909 pixels (-483)]
--- Contrast
Default.
--- HDR
RevealCore preset
--- Wavelet Sharpen
Parameter [Structure Size] set to [Large]
Created a mask (Auto, Stars, Do, Shrink x 3, Grow a few times, Invert). Mask should mask as many stars as possible and leave as much other stuff as posible.
Parameter [Amount] set to [500 %]
--- Deconvolution
May be able to tweak more (e.g. custom star/PSF, more iterations), but keeping it simple.
Parameter [Primary PSF] set to [Moffat Beta=4.765 (Trujillo)]
Parameter [Tracking Propagation] set to [During Regularization (Quality)]
Parameter [Primary Radius] set to [2.3 pixels]
--- Color
Legacy preset, selected Color response matrix for your 1100D.
Stars seem to have a nasty green halo to them. Not sure what is causing this.
Lovely pink/purple HII areas dotted around M81, yellowish core, bluer spiral arms, familiar whiter shade of M82 with its lovely red
Ha serpentines just becoming visible.
Parameter [Matrix] set to [Canon EOS 1100D]
Parameter [Green Bias Reduce] set to [1.52]
Parameter [Red Bias Reduce] set to [1.21]
Parameter [Cap Green] set to [100 %]
Parameter [Highlight Repair] set to [10 pixels] (to fix some of the green halo effects).
--- Psycho-Visual Grain Equalization De-Noise (choose grain equalization)
Parameter [Mode] set to [Psychovisual]
Parameter [Grain Removal] set to [60 %]
Parameter [Grain Limit Detail] set to [11.0 pixels]
Parameter [Grain Limit Color] set to [11.0 pixels]
And that's it. If you wish to give ST another try, you will notice that the above is a pretty standard workflow, as seen in many tutorials and videos. Again, any trouble I can help with, let me know!
Wishing you clear skies & good health,
Ivo