Astro Camera
night · 2026-09-20
2026-10-212026-10-202026-10-192026-10-182026-10-172026-10-142026-10-132026-10-122026-10-112026-10-102026-10-092026-10-082026-10-072026-10-06
1How dark the night was
595 frames, 20:06 to 05:59 (London time). Darkest sky 4.27 stops above black (18.0 mag/arcsec²), so clear.
572 / 595
frames in star trails / captured
4.27
darkest sky, stops above black
18.01
darkest sky, mag/arcsec² (Gaia G)
1
bad pixels
astrocam v3 · night of 20 Sep 2026
Sky brightness of every frame (log₂: one stop is twice the light). Dusk and dawn are the slopes at each end; cloud shows as a bump. The star-trail stack uses only frames within 30% of the darkest 10 minutes, so twilight and cloud are left out of it. Left out is not thrown away: those frames still go into the videos.2What the camera saw
astrocam v3 · night of 20 Sep 2026
The raw night: a 10 minute stack sliding on 1 minute per video frame. Dusk, cloud, aircraft and dawn all show here, five seconds for the whole night. · full-res3The whole night in one frame
astrocam v3 · night of 20 Sep 2026
The brightest value each pixel reached all night: every star draws its trail across the night.