u/Azkicat

After my previous posts I received some critiques to my processing. So I collected a bit more data and changed it.

27500s / 20s subs eq seestar s50
processed with siril and lightroom:
-2x drizzle stack
-bge
-graxpert denoise and deconv
-spectrophotometric color calibration
-veralux stretches
-starnet

Starless:
-HDR multiscale
-channel split
-each channel:
--syqon denoise
--light HDR multiscale
-recomposition with slightly tweaked colours

Starmask:
-abberation remover

Veralux recomposition: (star surgery)
-a bit more saturation

Lightroom:
-slight crop
-mask bg: desaturate and a little bit down the expo
-mask DSO: remove green and lit the saturation
-color calibration

4 hours 10s subs

Out of seestar

6 hours 20s subs eq s50

processed in siril + photoshop + lightroom

x3 drizzle, HDR, heavy denoising

Seestar s50 1,5hours

processed in siril

gear:

• canon rp + 24-50 f4.5-6.3 (not so good)
• DIY tracker out of broken eq2 mount

processing:

• 12m of data 15s expos
• Stacked in siril
• BGE
• Color calibration
• Stretching
• SyQon starless
• SyQon prism on starmask
• Recomposition
• Finishing touches in photoshop

This result encourages me so much to continue with my painful gear

50 minutes x 20s subs
Seestar s50

100x20s seestar s50
processed in siril

Processed in siril + photoshop

1115x10s

750x20s s50

processed in siril

2 stacks: 1st normal 800x20s, 2nd 650x20s with drizzle

processed in siril and photoshop

350x20s

processed in siril

630x20s eq s50

processed in siril:

1. seestar preprocessing script
2. veralux nox
3. veralux alchemy
4. veralux stretch
5. starnet++
6. cosmic clarity sharpen on starless (0.3-0.4)
7. graxpert bge 0.78
8. graxpert denoise 0.7
9. cosmic clarity sharpen 0.5
10. veralux revela
11. some finishing veralux curves
12. assign color profile
13. finishing touches and mask in lightroom

Gear:

• Camera: Canon EOS RP
• Lens: Canon EF 70-200mm f/2.8 200mm
• Mount: Hand-built equatorial mount with tracking
• Subs: 201 × 10s, f/2.8, ISO 3200
• Total integration: 33.5 minutes
• Location: bortle 5
• Date: May 3, 2026

Processed in siril:

• Stacked with Average + Winsorized Sigma Clipping
• Gradient removal with GraXpert
• Photometric color calibration
• Star removal with StarNet++ to process stars and galaxy separately
• Denoising with graxpert
• Stretching with GHS (Generalized Hyperbolic Stretch) and Veralux
• Recombined stars + starless, final touches on saturation and contra

Spent week making this. Used broken eq3 as a base. Fixed it and modified the way I needed. Then added a motor for gc2 mount through DIY adapter. At 200mm 10s stars are round. Proud of myself

1260x30s total

stacked in seestar (lost subs), processed with siril

Enormous amount of starlink satellites

250x20s

processed with siril

830x10s seestar s50

processed with Siril/veralux/graxpert/starnet/lightroom

weather was bad, maybe retake