Saturated Star Core Dark Anomalies

Questions and answers about processing in StarTools and how to accomplish certain tasks.
davidjbillo
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Re: Saturated Star Core Dark Anomalies

Post by davidjbillo »

Oh, yeah, you guys are pulling more of the disk out! That looks fantastic! I think I deliberately held back in Develop because I was not able to get a good Wipe. But then I went up to 600% with the Sharp module.

Yet you're not having the problem with the star core dark anomalies that I encountered...I wonder what is happening there. I see you cropped another pixel more. I think I will upgrade to the latest release and try some more.
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Cheman
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Re: Saturated Star Core Dark Anomalies

Post by Cheman »

Hi david
I always crop a couple of pixels, just to be sure ;) as far as the star cores, it might be introduced in decon or the agressive sharpening setting :confusion-shrug: see if you can determine what step is causing that. Are they there before wipe? I also see you did not bin. My camera is 8 megpixel. I usually bin at 75%, your image is much bigger than my images, so I binned at 35% beause my computer is not the fastest. dont know if that has anything to do with it :think: I think Ivo has been pretty busy lately, but maybe he will have time to enlighten us on what might be the cause.
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Cheman
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Re: Saturated Star Core Dark Anomalies

Post by Cheman »

Hey David
I'm always curious as to details about data aquisition. How many subs were used, exposure time, camera, mount etc.
could you post that info?
Che
davidjbillo
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Joined: Thu Mar 26, 2015 11:01 pm

Re: Saturated Star Core Dark Anomalies

Post by davidjbillo »

I originally started this thread because the dark anomalies were showing up at the very beginning, with the first AutoDevelop, and it was throwing off Wipe. I got around it by Wipe for colour only, not brightness. While I was waiting for replies, I just forged ahead to see what I could learn.

Yeah, I know I should bin my data, but currently that is against my religion! :twisted:
But seriously, I was planning to start binning, but I wanted to compare the StarTools result with what I get from DSS on this image, so I left it unbinned. My computer is also marginal for running StarTools, (E8400 C2D, 8G ram) and in fact I had one crash during the process and had to start over. In general, my seeing and focus don't really justify not binning.

The image is from Canon T3i on 8" f/3.9 Newtonian Astrograph, a stack of 21 exposures, 4 minutes @ 800 ISO, plus darks and flats. NEQ6 mount.
davidjbillo
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Joined: Thu Mar 26, 2015 11:01 pm

Re: Saturated Star Core Dark Anomalies

Post by davidjbillo »

So I just updated to .289, and started off as before, crop 1 pixel all around, Wipe, and....no more dark anomalies!
Whatever was the cause, it's fixed now. :thumbsup:
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Cheman
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Re: Saturated Star Core Dark Anomalies

Post by Cheman »

Im running 1.4.297
glad you got better results
Che
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