Astrophotography Processing Challenge - 2026

Weekly Community Image Processing Challenge – Zeta Ophiuchi

We are starting a weekly community image-processing challenge focused on improving processing skills using shared datasets.

Each week, a dataset will be shared and members are invited to process it independently using their preferred software and techniques. The results can be compared, and an anonymous poll may be used to select a preferred result.

Week 1 – Challenge Dataset

Target: Zeta Ophiuchi
Data type: Stacked image from light frames only
Total integration time: ~4 hours - 60*4 mins subs
Sky quality: Bortle 1
Camera: Nikon D5600a (astro-modified)
Mount: iOptron SkyGuider Pro

Download link:

Participants may use any processing software (Pixinsight, Photoshop, Siril, etc.).
Please post your final image along with a brief description of your workflow.

This challenge will run on a weekly basis depending on participation.

Important:
The shared data is for community use only and must not be redistributed or shared outside this forum/community.

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