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Is there a plugin to add Star diffraction spikes in photoshop (on a Mac) Adobe Photoshop · Niels_L · ... · 31 · 1221 · 1

jhayes_tucson 26.84
John Hayes
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Molly Wakeling:
by blending with the original, they can look quite natural.


Does "natural" looking include simulating the proper colors?
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DarrenR 0.00
DarrenR
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I've got Astronomy Tools action in Photoshop 2025 on Macbook Pro running Sequoia 15.5.  Happy to run a quick star spikes on one or two of your images, if we can work out a way to share them back and forth, to show exactly what it can do.  I don't use it a lot, but sometimes "the general public" like star spike versions ;-)
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erikwest 0.00
Erik Westermann
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I created a manual method for adding spikes - you have to add them to each star you want, but you are in complete control.

My method is based on using Photopea.com, a free Photoshop-like online editor, but Photoshop or any other photo editor works too.

Here's my article:

https://remoteastrophotography.com/2021/11/creating-star-spikes-reliable-method
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jhayes_tucson 26.84
John Hayes
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Erik Westermann:
I created a manual method for adding spikes - you have to add them to each star you want, but you are in complete control.

My method is based on using Photopea.com, a free Photoshop-like online editor, but Photoshop or any other photo editor works too.

Here's my article:

https://remoteastrophotography.com/2021/11/creating-star-spikes-reliable-method

The problem with this approach and others like it is that it doesn't produce diffraction spikes.  They are just monochromatic spikes on the stars that, in my opinion, look terrible.  Diffraction is an optical effect that forms a sinc() function that scales inversely with the thickness of the spider vanes and the wavelength so it is quite a colorful effect.  Realistic diffraction spikes can be generated mathematically but the easiest way to get it right is to use light as the computer and you do that by stringing orthogonal straight wires through the entrance pupil.

John
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morfeus 2.11
Derek Morf
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Yes, there is one. StarSpikes Pro 2

This software is only available on Windows, I believe.
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mollycule 1.20
Molly Wakeling
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John Hayes:
Molly Wakeling:
by blending with the original, they can look quite natural.


Does "natural" looking include simulating the proper colors?

No, it doesn't quite go that far. Rather, the first image out of the spike adder has rather fat, fake-looking spikes, but blending with the original makes them thinner and more realistic. I mainly only see color in very bright stars, so that part is missing, but probably not especially noticeable to most viewers.
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DrewJEvans 0.00
Drew Evans
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Use fishing line or thin wire in front of your objective. Definitely more natural and appealing than falsely adding them in post.
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