Have astronomers ever observed a violet shift like they have blue shifts and red shifts?

Redshift - Wikiwand

Ahh… petah? : r/PeterExplainsTheJoke

天文学家是否观察过“紫移”，它和蓝移有什么联系- 知乎

Explain shifting cultivation

How to measure red shift with a semi professional telescope - Quora

Have astronomers ever observed a violet shift like they have blue

Astronomy - Ch. 5: Light & E&M Radiation (27 of 30) Red Shift and

Infrared astronomy reveals the secrets of the Universe beyond

Describe three Demographic shifts and explain how each Shift

How is 'red shift' ascertained from a digital photograph such as a