Circular-ish background with live stacking

Discussion of using SharpCap for Deep Sky Imaging
jsadoulet
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Location: LYON FRANCE

Re: Circular-ish background with live stacking

#11

Post by jsadoulet »

OK. I understand that this point is difficult to tackle at the time being. But this right strip is a bit cumbersome... I agree it is not a big issue of course !
Thank you
JP
jsadoulet
Posts: 12
Joined: Fri Jul 26, 2019 12:34 pm
Location: LYON FRANCE

Automatic Background extraction in Live Stacking

#12

Post by jsadoulet »

Hi Robin
I may be a EAA (Electronically Assisted Astronomy) enthustiast !
I am just wondering if an erzats of Automatic Background Extraction process (ABE) - in the style of the one used by Pixinsight - should not be very useful inside Live Stacking. I am using it very commonly in PI and, frankly, it is very fast. It removes all the unwanted colors. This is a very good way to escape boring flat management. Do you consider this ABE as a potential future development in Sharpcap ?
Thanks
Jean-Paul
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admin
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Re: Circular-ish background with live stacking

#13

Post by admin »

Hi,

I do have the idea for some sort of gradient removal tool on the list of possible future features – effectively I was planning to do this by extracting the lowest frequency features of the image and subtracting them away, so it would remove any sort of smooth background rather than just a simple gradient.

No promises on when I'm afraid though!

Cheers, Robin
umasscrew39
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Re: Circular-ish background with live stacking

#14

Post by umasscrew39 »

Hi Jean-Paul

Before Hurricane Dorian hit Florida, I managed to get more testing in about the circular-is background from live stacks exported to PI. I confirmed what you found in that loading the 32-bits stacks instead of the 16-bits frames in PI do not create the background circles. So, while I do not understand what causes this effect, it is apparent from both of our experiences that it is easily avoided by just using the 32-bit stacks.

Bruce
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