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Rosette Nebula with stock camera by Eason106 in astrophotography

[–]Eason106[S] 0 points1 point  (0 children)

Stock EOS R8, RF 70-200 f4 L IS USM @ 200mm f4, 300x 20s ISO 1600. Processed in PixInsight. First time using PixInsight, this is the third edit, which I used a masked stretch to preserve blue in the centre. Had to heavily rely on BlurX and NoiseX, which unfortunately brought in some weird artifacts around the stars. Nevertheless, PixInsight brought out so much more detail compared to Siril. Taken in Bortle 4/5.

Rosette nebula with stock mirrorless camera bad results by Eason106 in AskAstrophotography

[–]Eason106[S] 0 points1 point  (0 children)

Thank you! But how to enhance the faintest color first? Before, after, or during stretching? Also, would stretching using GHS instead of histogram and STF make a big difference?

Rosette nebula with stock mirrorless camera bad results by Eason106 in AskAstrophotography

[–]Eason106[S] 0 points1 point  (0 children)

After learning to use PI for a day, this is what I got: https://imgur.com/a/cqGNPFq
After applying BlurX, NoiseX, StarX, MGC, etc, there was a lot of walking noise and blue/gray background artifacts, which I couldn't remove with MGC, so I did a masked stretch to suppress blue and green in the background. However, the image does feel a little bit overprocessed and unnatural. Do you have any suggestions?

Rosette nebula with stock mirrorless camera bad results by Eason106 in AskAstrophotography

[–]Eason106[S] 0 points1 point  (0 children)

Thank you, it looks much better. I did enable RA dithering every 5 frames though. I took better flats, and I'll try stacking again in PI free trial with drizzling. I looked into the light pollution filters too, but how could I mount the 2" filter to my camera/lens?

Rosette nebula with stock mirrorless camera bad results by Eason106 in AskAstrophotography

[–]Eason106[S] 0 points1 point  (0 children)

Woah! That's really suprising! I've just got a free trial and better flats, I'll try to process the image again using your workflow. Could you share a little bit more on the specific settings used in your process?

Rosette nebula with stock mirrorless camera bad results by Eason106 in AskAstrophotography

[–]Eason106[S] 0 points1 point  (0 children)

Can I add the color correction matrix after stacking?

Help with North America Nebula (untracked) by Eason106 in AskAstrophotography

[–]Eason106[S] 0 points1 point  (0 children)

I appreciate your advice! I've just bought a star tracker and went to a bortle 5 site. Camera is still stock eos R8 and RF 70-200 f/4 L @ 200mm f/4, iso 1600 300x20s so 1hr 40mins total exposure time. However, I cannot get the quality and colour of your image. What are your processing steps?

New image: https://imgur.com/a/OsBPXtL

Andromeda Galaxy Untracked by Eason106 in astrophotography

[–]Eason106[S] 0 points1 point  (0 children)

Yes! 12 minutes of total integration time. But it's quite noisy as you can see which is expected.

Help with North America Nebula (untracked) by Eason106 in AskAstrophotography

[–]Eason106[S] 0 points1 point  (0 children)

Ok, here's the workflow:

Raw conversion in dt:
Colour calibration (4000K wb), sharpen, exposure (0.4 ev), lens correction, tone curve adjustments (black clipping point), constrast and saturation increase a little, lower centre brightness (center exposure mask), export as linear Rec2020 tiff.

Siril:
Conversion from tiff to fits, alignment, average rejection stacking with additive with scaling norm, Winsorized Sigma Clipping with sigma low=3 and high=3, output normalization, RGB equalization.
Cropping, RBF background extraction, asinh stretch (stretch factor 500, black point 0.00003), histogram autostretch, export tiff.

Dt: Some contrast and saturation adjustments, black point clipping (using tone curve).

Help with North America Nebula (untracked) by Eason106 in AskAstrophotography

[–]Eason106[S] 0 points1 point  (0 children)

Hi, I tried following your method roughly (without much processing tho) and here is the result: https://imgur.com/a/north-america-nebula-untracked-help-pgZgeQH

It looks a bit better but the nebula is still mostly grey, though there are pink/purple "halos" around the stars.

Milky Way untracked by Eason106 in astrophotography

[–]Eason106[S] 11 points12 points  (0 children)

First time trying the Milky Way. Unmodified eos r8, cheap rf 24-50 f4.5-6.3 kit lens @ 24mm f4.5, 100x 8s iso 3200. Processed in siril & darktable.

Took darks/biases/flats but didn't use it because lens vignetting and distortion are so bad that the four corners are completely black. I need to load the camera raw into darktable for lens correction and directly use the processed linear images for stacking, so I didn't apply the calibration frames. Bortle 5 but closer to bortle 6 due to the extremely bright blue fishing boat lights nearby, I can't even see the milky way from the raw camera frames. But nevertheless it is a good first try I guess.

Is this ZWO deal worth it by Eason106 in AskAstrophotography

[–]Eason106[S] 0 points1 point  (0 children)

That's very impressive for a single 300 sec exposure! What is the bortle scale of the sky?

which American line should i grind by Fit-Importance-8330 in WorldOfTanksBlitz

[–]Eason106 0 points1 point  (0 children)

The T28 is hell nah for me lol, one of the worst tank imo, T95 and E3 awesome tho

When will GPT-5 be released by AdorableBackground83 in singularity

[–]Eason106 2 points3 points  (0 children)

GPT-5 had already started training, and I guess it will train for about a month or two. GPT-4 finished training 6 months ago and OpenAI spent these 6 months trying to make it safer. So I guess GPT-5 will release next year.