A smartphone astrophotography collaboration with u/zTrojan. The data acquisition and stacking are his work. I handled the entire post-processing workflow. Thanks to u/zTrojan for providing the stack!

Acquisition
  • Imaging device: Xiaomi 13 Ultra, 3.2× telephoto
  • Exposure: 50s at ISO 800
  • Lights: 45
  • Darks: 135
  • Integration time: 37m 30s
  • Main optics: Sky-Watcher 150/750 Newtonian telescope
  • Mount: EQ3-2 with OnStep
  • Guiding: SVBONY SV106 + ZWO ASI120MM Mini
  • Eyepiece: SVBONY SV190 18mm Ultra Flat Field
  • Phone adapter: SVBONY SV214 Pro 3-Axis Universal Smartphone Adapter
  • Stacking: Astro Pixel Processor
Processing
  • Siril: cropping, BGE background extraction, background neutralization, color calibration and aberration correction
  • StarNet++: star separation
  • Siril: separate stretching of the starless image and star layer
  • Photoshop: star recomposition and final adjustments

For this collaboration, I focused on the post-processing side, working with the background and stars separately before recombining them into the final image.

submitted by /u/Buffur
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