showstars oxi and ariadnajpg better
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While fans may argue over who is "better," the two creators often find their greatest success through collaboration. When appearing together under the banner, they leverage their combined fanbases through:

| Symptom | Likely cause | Fix | |---------|--------------|-----| | | Threshold too high or image is linear‑scaled incorrectly. | Lower --threshold , or run showstars‑oxi --auto‑scale . | | Stars look blocky | Input image is 8‑bit; low dynamic range. | Use the original 16‑/32‑bit FITS for detection, then export PNG only after processing. | | Colour banding in final JPG | Over‑compression during JPG export. | Use --output-format png then convert with imagemagick at quality 95, or set --jpeg-quality 95 in ariadnajpg . | | Catalogue labels are offset | WCS header missing or wrong. | Verify CRPIX , CRVAL , CD values; re‑solve astrometry with astrometry.net ( solve-field ). | | Performance is slow on large frames | Single‑core processing. | Add --threads N (where N = number of CPU cores) to both tools. |

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