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- Tue Dec 14, 2021 4:31 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Blue-Banded Blood Moon (2021 Dec 01)
- Replies: 24
- Views: 20256
Re: APOD: A Blue-Banded Blood Moon (2021 Dec 01)
This is a beautiful view of the transmission of sunlight through the ozone layer in the Earth's atmosphere between about 12 and 40 km altitude. The Chappuis band of ozone absorbs a broad band of wavelengths centred close to 600nm and so removes a lot of the orange, yellow and green light to leave bl...