Moon altitude 38° above the horizon, age 19 days.
One photo of the
sky, every ten minutes.
A 140° fisheye on the roof photographs the sky every ten minutes. At night the frames are analysed for striking objects: ISS passes, the moon, meteors, sometimes an aircraft or a distant strip of thunderstorm. Most of it is clouds, and clouds are fine too.
Clear morning,
cloudy afternoon.
The camera takes 144 photos a day. Below is one snapshot every second hour. Dots on a night frame are stars or a meteor; the half circle at the bottom is the moon.
-
00:00 99% -
02:00 99% -
04:00 95% -
06:00 8% - — 08:00 0%
- — 10:00 0%
- — 12:00 0%
- — 14:00 0%
- — 16:00 0%
- — 18:00 0%
- — 20:00 0%
- — 22:00 0%
ISS, meteors,
a forgotten aircraft.
An analysis script compares frames with the previous one and flags movements, lines or objects that don't match the star chart. Anything striking ends up here.
- Afnemende maan
- ISS pass
Pass of the ISS, maximum elevation 22° above the horizon.
- ISS pass
Pass of the ISS, maximum elevation 25° above the horizon.
- ISS pass
Pass of the ISS, maximum elevation 42° above the horizon.
- Today 47 frames so far. Clear frames sit at 21%, above the monthly average of 21%.
- ISS passes in the past week: 6. Most recent on 1 Sep 04:59.
A ZWO ASI camera with a 2.5mm fisheye lens looks straight up from the roof. The Raspberry Pi grabs a frame every ten minutes and sends it to the NAS. At night a script runs that compares consecutive frames for differences, checks them against a star chart, and flags anything that moves or doesn't match the stars as "possibly interesting". After that I look it over by hand before I stick a name on it.