![]() Full details are in the 100% I posted in the 'Bin that I linked in Post #1. This was a stock 50mm lens with a stock APS-C DSLR on a tracking EQ mount. Like RawTherapee can do with one bloody 30-second sub: As with so many things in DSO imaging, it's unintuitive.Įdited by bobzeq25, 17 September 2022 - 02:02 PM. Were you using a duoband filter? That makes the situation (unmodded DSLR) significantly worse. Images with either modded cameras or astro specific cameras, show _very_ bright red areas.Īgain. It's really easy to remove red nebula when removing red blotchiness.īut I think you're swimming upstream with the unmodded camera. How do you remove red blotchiness? The best ways are to dither when you acquire the data, to neutralize the background (without neutralizing the nebula), and use excellent noise reduction tools. If there's something in the data, PI can find it, and even emphasize it.ĪPP and Siril will do pretty good for most people. Because it has a _vast_ array of _very_ adjustable tools. PI will do the best, IF someone knows how to use it. Use whatever works, but I don't see Siril eating data. For me, Startools doesn't give me anything I can't get for free and done better, and RawTherapee, well, I just love that software. It was my own ignorance when it comes to necessary aquisition time.Ĭhoose tools that work for you. A 40 minute sample of 30 seconds subs, is not appropriate.Ī few years ago, I too, probobly stated openly that Siril seemed to take away data, but it wasn't. Your take away could also be, Having a modified camera, and having a lot of aquisition time, will lead to results you would like. I'm confident what you are gong to see is a lot of noise and mottling. Please show your Startoolers and Raw Therapee again but crop in to 100% of your developed image. But it obliterates the color from my existing data. I assume this comes from the respective noise control implementations-the Siril and PI approach will eliminate the red blotchiness I have to remove from my backgrounds. StarTools and RawTherapee, on the other hand, do not. My takeaway is, Siril and PixInsight require much longer subs for them to render color-or at least the light data has to be farther away from the floor than 30 seconds of f/3.5 data on 4.3µm pixels on a stock DSLR from literally the brightest Ha target in the night sky. Could be wrong.Įdited by bobzeq25, 16 September 2022 - 11:25 PM. The red nebulae just isn't there, and I don't think it's a Siril issue. Note that the stars and the Milky Way have a ton of it. I did a quick process of the Siril stack in PixInsight, doing my best to emphasize color. So, there are no saturated pixels, there should always be some. You're only using about 1/3 of the camera's dynamic range. A light averaged about 550 ADU on a 16,000 ADU (14bits for both) scale. Did you by any chance, use a duoband filter? That passes two narrow peaks, the unmodded camera decimates the red one. Takes out perhaps 90% of the Ha emission from the nebulae. If you have some Siril calibration magic, I'm all ears… Here's what I was able to pull with calibration with RawTherapee: There are those who claim it can be done. I've had a lot of trouble pulling any color out of my hour on the Carina Arm of the Milky Way with Siril 1.0.5 (the latest rev) from my unmodded Canon 600D/T3i. Long time lurker, first time poster of a "Process My Stack" post.
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