An In-Depth Look at Background Extraction in Siril

Рет қаралды 9,479

Жыл бұрын

In astrophotography, unwanted gradients can often creep into your images, obscuring important details and diminishing the overall quality of your work. Luckily, Siril's background extraction functions provides easy and effective ways to remove these gradients and achieve stunning, professional-grade astrophotos.
In this tutorial, I'll guide you through the process of using Siril's background extraction functions to eliminate gradients and create a clean, clear image that highlights the celestial objects you're photographing. From selecting the appropriate interpolation method to adjusting parameters like smoothness, degree order, and samples, we'll cover everything you need to know to get the most out of this powerful tool.
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Пікірлер: 41

@JimsShed Жыл бұрын

I love your pace, depth of explanation, and topic focus. Very helpful. Thanks.

@DeepSpaceAstro Жыл бұрын

Thanks!

@Phenolisothiocyanate Жыл бұрын

One thing I noticed is that if you aren't careful the background extraction will remove large areas of diffuse nebulosity. You might not even know they were there because they were hidden by sky glow or light pollution.

@ianmacdonald2307 Жыл бұрын

As a newbie to Siril your tutorials are a great help 👍

@DeepSpaceAstro Жыл бұрын

Glad to hear that! Thanks!

@johnblack9499 Жыл бұрын

Great video. Nice to see each feature explained, appreciate you taking the time to do that 🙂

@DeepSpaceAstro Жыл бұрын

Thank you!

@meianoitee01 Жыл бұрын

Your videos are so great. Thank you!

@DeepSpaceAstro Жыл бұрын

Thanks so much!

@andreiosmolovski8800 Жыл бұрын

Thank you so much! Really good job!

@DeepSpaceAstro Жыл бұрын

Thank you!

@yervantparnagian5999 Жыл бұрын

Another great video. Thanks.

@DeepSpaceAstro Жыл бұрын

Thanks! Glad you enjoyed it

@tonybailey3944 9 ай бұрын

At last, a correct explanation of this feature. Much appreciated, liked & subbed.

@DeepSpaceAstro 9 ай бұрын

Thanks and welcome!

@juanchopolo Жыл бұрын

Great tutorial!

@DeepSpaceAstro Жыл бұрын

Thank you!

@OliverHext 24 күн бұрын

Great tutorial...

@DeepSpaceAstro 23 күн бұрын

Thank you!

@gteska Жыл бұрын

Excellent video. This has helped me immensely. Very thorough. The dither option is very useful. Thanks!

@DeepSpaceAstro Жыл бұрын

Thanks! Great to hear it was helpful!

@polmontwojtek Жыл бұрын

Hi, great video. BTW, I found your tutorials very informative, thank you !,

@DeepSpaceAstro Жыл бұрын

You're welcome! Glad they were helpful!

@rlmcnugsy1434 Жыл бұрын

I tried Siril a little while back and didn't get on with it. Since hearing that they incorporated Starnet I thought I'd give it another shot. If it wasn't for your videos I may have given up on it again but you got me through. I've way more to learn but now I know where to find the help and I'm enjoying it. Many thanks!

@DeepSpaceAstro Жыл бұрын

Thank you so much! Happy to hear they are helping!

@earthling-fh2mg Жыл бұрын

Have to agree. The guy’s somewhat of a public service as quite a few are. It’s a nightmare trying to find your way around these software packages with their help. Imagine what it would be like without.

@Mrpaulgs Жыл бұрын

I am still not sure if you are selecting bad background you want Siril to correct or good background you want Siril to apply to the whole image?

@DeepSpaceAstro Жыл бұрын

The samples are telling BGE where the background is, good or bad.

@ntt2k Жыл бұрын

What Bortle skies are you taking most of your shots from? They look very clean

@DeepSpaceAstro Жыл бұрын

Thanks! Bortle 4.5-5.

@scottrk4930 Жыл бұрын

Hiya Rich . I like placing the BE points manually for the exact reasons you mentioned but I do have a question . Some DSO images will eventually reveal faint dust clouds and bands after processing . Will incorrect BE point placement cause this Data to be removed in this step ? I’m worried I’ve been sabotaging my images .

@DeepSpaceAstro Жыл бұрын

I've actually experimented with what you're asking before. First, it would never completely remove the data. BGE simply creates a synthetic background based on the sample points. A few on the dust, etc. shouldn't cause any noticeable issues. Lots of samples on the DSO or surrounding dust and you will lose data in the sense that it'll wash out/blend with the background. You'll still see those areas but not as they should be. Best advice is to play with it. Place samples where they shouldn't be a have BGE compute the background, then compare that to proper sample placement. Hope that helps.

@scottrk4930 Жыл бұрын

@@DeepSpaceAstro Thanks Rich . I'll give that a try ./SRK

@earthling-fh2mg Жыл бұрын

I’ve just tried out using it manually since, everytime I generate otherwise, when i come to right click to remove points I don’t want, Siril crashes and it’s ‘start over again from scratch’. So, doing it manually, I then just sprinkle points around the perimeter of the image and it appears to do a decent job with just 30 or 40 points.

@DeepSpaceAstro Жыл бұрын

If you're on a Mac, it's a known bug and will be fixed in the next release.

@earthling-fh2mg Жыл бұрын

@@DeepSpaceAstro Ah! Good to know it isn’t me just being a dick again! Thank god for that!

@fabiogervasi982 Жыл бұрын

What if you would've done all this in RGB instead of green channel only? The result would be the same?

@DeepSpaceAstro Жыл бұрын

So first of all, this video was shot using v1.0.6 which did not allow you to work on the RGB channel. The new version 1.2.0 currently in beta however does. To answer your question, yes the result would be the same.

@fabiogervasi982 Жыл бұрын

@@DeepSpaceAstro Thank you so much☺️