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Old 03-05-2017, 06:19 PM
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ChrisV (Chris)
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Join Date: Aug 2015
Location: Sydney
Posts: 1,799
Thanks all for the comments. I'm loving the newt Glen, its a nice complement to my refractor.

Does this process in startools seem sensible ? After stacking flat/dark corrected subs in deep sky stacker (DSS)

1. Opened the fits file and cropped slightly to get rid of uneven edges from stacking.
2. Binned 71%. Seemed a good compromise between smaller files size and enough to give unblocky stars.
3. Autodev it to see what the detail looked like. Selected an ROI until I got a bit of background glow so I could see if there were any gradients.
4. Then used the wipe function to remove gradients.
5. Redid the autodev & ROI to get it at the right level of exposure.
6. stopped tracked and de-noised.
7. Then I did (overdid) the colour adjustment. Turned up the saturation to ~160%.

I haven't worried about other features like HDR, contrast, deconvolution yet.

In the end it looked like a lot of red was clipped when I did the colour balance. I don't know if this was me clipping stuff above the noise floor, or whether it was the way I set up my OSC camera?

To set up the camera I adjust the colour level controls in sharpcap so the RGB histograms overlap when shooting a bit of white paper during the day (or a clean bit of black road in the shade). Does this sound right?
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