Persagen.com 🇨🇦 🏳️‍⚧️ ☮🏳️‍🌈 on Nostr: Combining 15s interval whole-sky-camera photos to form 4y spanning keogram ...

Combining 15s interval whole-sky-camera photos to form 4y spanning keogram
https://mastodon.social/@cgbassa@astrodon.social/113770319976414165
https://astrodon.social/@cgbassa/113770318993975063
https://news.ycombinator.com/item?id=42595190
Cees Bassa 👍️ 👍️
nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqfz9h4cf83hclmddh6yzvh0eeyv4tmfwar9l54uustdmvuw23avrstcum6g (nprofile…um6g)

* all-sky camera taking image of sky above Netherlands ev. 15 seconds, for 4 yrs
* combined images reveal
length of night changing throughout year
passage of clouds
motion of the Moon & Sun through sky

https://en.wikipedia.org/wiki/Keogram

#Astrodon #astronomy #CitizenScience #photography #keogram #CeesBassa #astrophotography