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High pressure sodium is very common and still available. Low pressure sodium is extinct. The last LPS lamp was made in 2018 I believe. It's a shame, because LP
by kunai 5y ago
High pressure sodium is very common and still available. Low pressure sodium is extinct. The last LPS lamp was made in 2018 I believe.
It's a shame, because LPS was the gold standard for astronomy as the hyperspecific emission spectrum made it extremely easy to filter out for astrophotographers and telescope users
- adgjlsfhk1 5y agoit's totally possible to make leds with similar properties, but it's generally but done because narrow spectrum lighting messes with color perception