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- Wed Jul 21, 2021 9:04 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Colors: Ring Nebula versus Stars (2021 Jul 21)
- Replies: 16
- Views: 3734
Re: APOD: Colors: Ring Nebula versus Stars (2021 Jul 21)
One powerful application of objective prism spectroscopy was not mentioned: finding high-redshift galaxies by noting the apparent wavelength of the Balmer break at 3646 Å, or more extremely, the Lyman break at 912 Å, where the intensity of the continuous spectrum (the color streak) drops significant...