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StarXTerminator - New Russell Croman PS Action for Star Removal


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Just have to say that Star Xterminator has slightly revolutionized my processing of faint nebulosity. Here are two examples from my RASA8+ASI2600MC rig before and after I learned to use Star Xterminator. It gave me much more freedom to stretch and fix (HiPass and more) the faint nebulosity in PS before I brought the stars back. There is just so much more to find in the data when the stars are out of the way. I use it after I have done several initial stretches, and I have not tried it on linear data:

Cheers, Göran

before:

1179501008_20200916-17VDB152RASAPS25smallSign.thumb.jpg.125e10e7400472d4c46deb21c298ce0d.jpg

after:

361221044_20200916-17VDB152RASAPS34smallSign.thumb.jpg.46e17af892ae0979cf02e7ca97aff87a.jpg

before:

1218862954_20200912-13LDN1235RASAPS21smallSign.thumb.jpg.8a9a25c6b58fa0e34b58ec34444dc60a.jpg

after:

542310123_20200912-13LDN1235RASAPS33smallSign.thumb.jpg.f0bca0c4bae2fbfb69aebb2aa71135aa.jpg

Edited by gorann
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I'm finding with the PS version that it leaves quite a smeared patch where the star was. I posted on the Cn post about it and Russell said he is shortly bringing out a new PS version which will be able to use the latest version of his AI engine and hopefully prevent this smudging. I look forward to that as removing stars has never been so easy ready to process!

Apparently the PI version already uses the latest AI engine and so that is why some of you may be finding better results than others.

Ed

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  • 2 months later...

I have started using StarXterminator to remove the stars from an RGB image following a stretch from Linear to non linear in Pixinsight. By checking create star image you get the stars with the correct colour. I then proceed to process the starless image without having to worry about affecting the stars or having to create a large number of star masks. At the end of the processing i then add the RGB stars back into the image. I can say this has improved the final image beyond my expectations. In respect of artefacts i find StarXterminator superior to StarNet. When the stars are removed following the initial stretch the majority of artefacts are dealt with by TGV Denoise. Adding the stars back in at the end removes any remaining artifacts. It is also very useful for adding RGB stars to Narrowband images. Here  is an example.

NGC346 is in the Southern Hemisphere and within a large, dense star field. It is a good test for star removal. The data is from the ATEO-3 Telescope in Chile, and comprises R-G-B and Ha & OIII data. I have put together an HOO narrowband image with R-G-B stars.

1. Non linear RGB image.

RGB_PCC1.thumb.jpg.705c967082870d380ae17d0fe66116b1.jpg 

2. RGB Stars removed with StarXterminator

RGB_PCC_stars.thumb.jpg.b14fbe7a9e707483e848ad73ba4127d5.jpg

3. Non Linear Ha image with stars removed in StarXterminator

Ha_No_stars.thumb.jpg.db28a550419dd6caba4ad27b61a7064b.jpg

4. OIII Image with stars removed in StarXterminator

OIII_No_Stars.thumb.jpg.7188eb5b0f32f039e69b6dfd99e6ee58.jpg

5. Final HOO image

FInal_HOO_No_Stars.thumb.jpg.0a5611baf7ec9805a2c484f4c6406d27.jpg

6. Final HOO image with RGB Stars.

Final_HOO_RGB_Stars.thumb.jpg.563f9cf90493f21509a4186258998329.jpg

Given the amount of arts in the image (7,500) the starless images are unusable. However the RGB stars are almost perfect and when added to the HOO image produce a very nice image rather than having nasty coloured HOO stars.

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