Starnet++

Forgot your password? There is a thread over starnet++ CN started by the developer with a link to download the files not entirely sure if linking to a 'rival' forum starnet++ allowed, but if you Google "starnet v2" it'll be one of the top results. The Lazy Astronomer 6 posts. Laurieast 3 posts, starnet++.

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Starnet++

I think it is an invaluable tool to have when processing your images, and I personally use it all the time. He used it to remove the stars from his image of the Wizard Nebula, and it worked astonishingly well. Suddenly, I was seeing starless astrophotography images pop up on Instagram and Astrobin daily. What you choose to do with the starless image you create is up to you. The process of reducing or removing stars in an astrophoto is not a new concept in the astrophotography image processing world. This technique is used by many amateur astrophotographers to help reveal the delicate structures of their deep-sky object. By separating the stars from the nebula or galaxy in your images, you can control and manipulate the data in a more deliberate way overall. A quick example of this would be to brighten the outer regions of the Andromeda Galaxy without making the surrounding stars brighter and overpowering. Certain subjects are better suited for a starless variation than others. For example, a dim nebula like NGC at the top of this post with small stars within the field. Comparing my original image of the Orion Nebula with a starless version.

The mini histograms also show a graph of the transfer function of each stretch, and may be minimized starnet++ clicking the drop arrow next to their title. Sign in with Facebook, starnet++.

In versions of Siril prior to 1. A python script was available and covered here in a previous tutorial now deleted , but it involved multiple additional dependencies, whereas the new integrated interface in 1. Both v1 and v2 are supported. They must therefore be converted. Unless the force 16 bit preference is set it will convert the output to 32 bit in order to be ready for increased precision calculations in subsequent processing.

He has announced that he has released V2 of the software. The idea was to train a neural network that can remove stars in one simple step, avoiding time-consuming-thousand-steps procedures with dozens of parameters to tune. Since its debut, Misiura has been working with the amateur astronomy community to continuously improve on the software. For Photoshop users the software provides the ability easily drag-and-drop your images into the platform to remove the stars. It can be downloaded on Sourceforge. There is a Python version for more advanced users that is available on GitHub. The whole code is open-source and users need to have the ability to work with Python, Tensorflow, etc. The code provides the ability to train the neural network on your own data or modify the code for your needs.

Starnet++

In versions of Siril prior to 1. A python script was available and covered here in a previous tutorial now deleted , but it involved multiple additional dependencies, whereas the new integrated interface in 1. Both v1 and v2 are supported. They must therefore be converted. Unless the force 16 bit preference is set it will convert the output to 32 bit in order to be ready for increased precision calculations in subsequent processing. The output image. Note that in this case, if you have further linear processing to do you will need to note the values of the lo, mid and hi MTF sliders and apply the inverse stretch manually using the Siril console command invmtf. Note that the stride input control is only shown when Use custom stride is checked: it is unchecked by default. The starless image is loaded as the current working image in Siril.

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The starless version of your image will populate in the StarNet directory. Thanks for the heads up. In my experience, this technique produces a better overall result because the tool can better isolate the stars in each color channel. The PixelMath tool recently introduced in Siril makes it possible to recombine starless and star mask images in a different manner. I recommend copying and pasting your original image as a layer on top of the starless version as shown below. Maybe you enjoy the look of a completely starless image on its own. One way it can be handled is to do linear stretch. It does take a little longer, however. My stars are terrible, can I save my image? The instructions are here. The output image.

I think it is an invaluable tool to have when processing your images, and I personally use it all the time. He used it to remove the stars from his image of the Wizard Nebula, and it worked astonishingly well. Suddenly, I was seeing starless astrophotography images pop up on Instagram and Astrobin daily.

There is a thread over on CN started by the developer with a link to d. The two stretched images are combined in the CIE LAB color space using the following transformations the subscripts l and r denote values from the left and right images respectively :. SyedT Posted January 31, Reversible non linear stretch would consist out of three steps: step 1 - same as above - lower white point almost down to saturation of target step 2 - apply gamma of known power step 3 - bring up black point just enough so you avoid clipping on left in each step note down what you used. It's easy! So, one I download the file, then what do I do with it? Log in. The software is very simple to install and run on a PC. Trying to strech the result of a starless image I see some star artifcats appearing, not sure that is the case with StarXterminator. Media New media New comments Search media.