Thanks for the responses, guys!
I want to answer everyone, but I will immediately say that Matt's advice helped.
Quote from: Oshyan on May 15, 2018, 03:20:29 PM
I think this is just a limitation in how Terragen's various glows and post effects (e.g. starburst) work. Possibly made worse by large scales in a space scene.
Do you mean "Bloom" as a "glows"? The fact is that on the first frame you can see that the Bloom and Starburst are off, but the star is still of a larger radius than I should see, and at the same time the circle of the star is even. As if that's the way it should be. On the other hand, you are probably right about the scale in the space scene. On a smaller scale, I did not encounter such a problem, or simply it was not so noticeable.
Quote from: WASasquatch on May 15, 2018, 04:49:43 PM
I think it's the scales and the bloom masking the object.
If you use super large scales, you'll see it's a luminous sphere, and even at these scales, the light is emitted from a source point in the center of this object.
So at these scales it's hard to see the object over it's glow.
Almost the same as I said to Oshyan. The effect occurs even when there are no post effects such as Bloom or Starburst.
Quote from: Kadri on May 15, 2018, 06:14:56 PM
Have you tried with higher Antialiasing values?
Yes, I tried, it almost does not affect. Although some other changes seem to occur when regulating AA. But this is not a decrease in the star, but an influence on the evenness of the edge (visible without post effects) or even on the brightness of the Bloom (only for small values of AA). In addition, I believed that the light source should always be visible, even if it is very small. But it turned out that with small AA values this is not always visible. On some frames, when I do the animation, some stars just disappear! Although they were not found using raytracing, and the positions were specified for Terragen explicitly.
Quote from: Matt on May 15, 2018, 06:38:07 PM
This is probably caused by using "anti-aliasing bloom", or a soft pixel-reconstruction filter, or both. For the sharpest results you could try the Narrow Cubic pixel filter with anti-aliasing bloom turned off. With some of the other pixel filters you need to keep anti-aliasing bloom turned on to prevent "ringing" around the bright stars, but this contributes to the enlargement of the object. Narrow Cubic allows you to turn it off.
Yes, Matt, thank you. This turned out to be the solution, I had the selected mode Narrow Cubic, but the Anti-alizing bloom was turned on. I turned off the bloom, the stars diminished. However, this is still not enough for me. Let's just say, now my stars are already "almost good", but not "super"
Here the result:
[attachimg=1]
By the way, is there no way to remove these flashes when the star is exactly on the edge of the frame? For example, can I somehow create a black frame 1 pixel thick at the edge of the frame before the post-effect (Bloom or Starburst) is applied? Otherwise, I suppose I will have to abandon Starburst inside Terragen and apply post-effects in a third-party application, which I do not really want to do, because I like Starburst, which Terragen offers.